A particle is executing SHM with frequency F. The frequency of oscillation of its kinetic energy is:
A)
F
done
clear
B)
F/2
done
clear
C)
2F
done
clear
D)
4F
done
clear
View Answer play_arrow
Two soap bubbles with radii \[{{r}_{1}}\] and \[{{r}_{2}}({{r}_{1}}>{{r}_{2}})\] comes in contact. Their common surface has a radius of curvature:
A)
\[\frac{{{r}_{1}}+{{r}_{2}}}{2}\]
done
clear
B)
\[\frac{{{r}_{1}}{{r}_{2}}}{{{r}_{1}}-{{r}_{2}}}\]
done
clear
C)
\[\frac{{{r}_{1}}{{r}_{2}}}{{{r}_{1}}+{{r}_{2}}}\]
done
clear
D)
\[\sqrt{{{r}_{1}}{{r}_{2}}}\]
done
clear
View Answer play_arrow
Two particles of equal mass move in a circle of radius r, under the action of their mutual gravitational attraction. If the mass of each particles is m, the speed of each particles is:
A)
\[\sqrt{\frac{Gm}{r}}\]
done
clear
B)
\[\sqrt{\frac{Gm}{2r}}\]
done
clear
C)
\[\sqrt{\frac{Gm}{4r}}\]
done
clear
D)
\[\sqrt{\frac{2\,Gm}{r}}\]
done
clear
View Answer play_arrow
A body of mass 1kg is thrown upward with a velocity of \[10m/s\] comes to rest (momentarily) after moving up to 4km. The work done by air drag in this process is (Take, \[g=10m/{{s}^{2}}\])
A)
\[-20J\]
done
clear
B)
\[-10J\]
done
clear
C)
\[-30J\]
done
clear
D)
\[0J\]
done
clear
View Answer play_arrow
A particles of mass m is moving on a circular path of constant radius r such that its centripetal acceleration, \[{{a}_{e}}\] is varying with time t as \[{{a}_{e}}={{K}^{2}}r{{t}^{2}},\]where K is a constant. The power delivered to the particles by the force acting on it is:
A)
\[2\pi m{{K}^{2}}{{r}^{2}}\]
done
clear
B)
\[m{{K}^{2}}{{r}^{2}}T\]
done
clear
C)
\[\frac{m{{K}^{2}}{{r}^{2}}{{t}^{5}}}{3}\]
done
clear
D)
zero
done
clear
View Answer play_arrow
A massive platform of mass m is moving with speed \[V=6m{{s}^{-1}}.\] At, \[t=0\] a body of mass \[m(m<<M)\]is gently placed on the platform. If coefficient of friction between body and platform is \[\mu =0.3\] and \[g=10m/{{s}^{2}}\]then:
A)
The body covers a distance 3m on the platform in the direction of motion of the platform
done
clear
B)
The body covers a distance 3m on the platform opposite to the direction of motion of platform before coming to rest.
done
clear
C)
The body covers a distance 6m on the platform in the direction of motion of the platform
done
clear
D)
The body covers a distance 6m on the platform opposite to the direction of motion of platform before coming to rest
done
clear
View Answer play_arrow
Three particles start moving simultaneously from a point on a horizontal smooth plane. First particle moves with speed \[{{V}_{1}}\] towards east, second particle moves towards north with speed \[{{V}_{2}}\] and third one moves towards north east. The velocity of the third particle, so that the three alway lie on a straight line, is:
A)
\[\frac{{{V}_{1}}+{{V}_{2}}}{2}\]
done
clear
B)
\[\sqrt{{{V}_{1}}{{V}_{2}}}\]
done
clear
C)
\[\frac{{{V}_{1}}{{V}_{2}}}{{{V}_{1}}+{{V}_{2}}}\]
done
clear
D)
\[\sqrt{2}\frac{{{V}_{1}}{{V}_{2}}}{{{V}_{1}}+{{V}_{2}}}\]
done
clear
View Answer play_arrow
A ball is dropped vertically from a height d above the ground. It hits the ground and bounces up vertically to a height d/2. Neglecting subsequent motion and air resistance, its velocity V varies with the height h above the ground, as:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
If the speed of light [c], acceleration due to gravity (g) and pressure (p) are taken as fundamental units, the dimensional formula of gravitational constant (G) will be:
A)
\[{{c}^{o}}g{{p}^{-3}}\]
done
clear
B)
\[{{c}^{2}}{{g}^{3}}{{p}^{-2}}\]
done
clear
C)
\[{{c}^{o}}{{g}^{2}}{{p}^{-1}}\]
done
clear
D)
\[{{c}^{2}}{{g}^{o}}{{p}^{-2}}\]
done
clear
View Answer play_arrow
The length, width and thicknesss of a block are \[(100.0\pm 0.1)cm,\] \[(10.00\pm 0.01)cm\] and \[(1.000\pm 0.01)cm\] respectively. The maximum possible error in its volume will be:
A)
\[\pm \,0.111\,c{{m}^{3}}\]
done
clear
B)
\[\pm \,0.012\,c{{m}^{3}}\]
done
clear
C)
\[+\,0.003\,c{{m}^{3}}\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
There is an electric field E in X-direction. If work done in moving a charge \[0.2C\]through a distance of 2m along a line making an, angle of \[{{60}^{o}}\] with X-axis is 4.0 Joule. The value of E is:
A)
\[\sqrt{3}\,\,N/C\]
done
clear
B)
\[4\,\,N/C\]
done
clear
C)
\[5\,\,N/C\]
done
clear
D)
\[20\,\,N/C\]
done
clear
View Answer play_arrow
A vertical glass capillary tube open at both ends contains some water. Which of the following shapes may be taken by the water?
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
A particle slides on a frictionless elevated curved track from a point A, which terminates in a straight horizontal section ending at C, as shown. If the particle looses the contact with the track at 0, the particle will hit the ground from C at a horizontal distance of:
A)
\[0.5m\]
done
clear
B)
\[0.8m\]
done
clear
C)
\[1.0m\]
done
clear
D)
\[1.2m\]
done
clear
View Answer play_arrow
A string of length L and mass m are lying on a horizontal table. A force F is applied at one of its ends. Tension in the string at a distance X from the ends at which force is applied is:
A)
zero
done
clear
B)
F
done
clear
C)
\[F(L-X)L\]
done
clear
D)
\[F(L-X)/M\]
done
clear
View Answer play_arrow
A black body is at a temperature 2880K. The energy-radiation emitted by this object with wavelength between. \[499nm\] and \[500nm\] is U , between \[999nm\] and \[1000nm\] is \[{{U}_{2}},\] and between \[1499\text{ }nm\] and \[1500\text{ }nm\] is \[{{U}_{3}}\] then (Wien's constant) \[b=2.88\times {{10}^{6}}nm-K)\]:
A)
\[{{U}_{1}}>{{U}_{2}}\]
done
clear
B)
\[{{U}_{2}}>{{U}_{1}}\]
done
clear
C)
\[{{U}_{1}}=0\]
done
clear
D)
\[{{U}_{3}}=0\]
done
clear
View Answer play_arrow
\[1\text{ }kg\] water of specific heat \[1\,cal/{{g}^{o}}C\] kept in a container at \[{{10}^{o}}C\]. If \[50g\] of ice at \[{{0}^{o}}C\] is required to cool down the water from \[{{10}^{o}}C\] to \[{{0}^{o}}C\] the water equivalent of container is (Latent effusion for ice \[=80cal/g\] and specific heat of water is \[1\,cal/{{g}^{o}}C\])
A)
\[1\,kg\]
done
clear
B)
\[2\,kg\]
done
clear
C)
\[3\,kg\]
done
clear
D)
\[\frac{1}{2}\,kg\]
done
clear
View Answer play_arrow
A siren placed at a railway platform is emitted sound of frequency 5KHz. A passenger sitting in a moving train A records a frequency of \[5.5\text{ }KHz,\]while the train approaches the siren. During his return journey in a different train B, he records a frequency of \[6.0\text{ }KHz\] while approaching the same siren. The ratio of the velocity of train B to that train A is:
A)
\[242/252\]
done
clear
B)
2
done
clear
C)
\[5/6\]
done
clear
D)
\[11/6\]
done
clear
View Answer play_arrow
The power of sound from the speaker of a radio is\[20wW\]. By tunning the knob of volume control the power of sound is increase to\[400m\text{ }W\]. The power increase in dB as compared to the original power is \[(\log \,\,{{10}^{2}}=0.3):\]
A)
\[1.3\,dB\]
done
clear
B)
\[3.1\,dB\]
done
clear
C)
\[13\,dB\]
done
clear
D)
\[30.1\,dB\]
done
clear
View Answer play_arrow
A hoop rolls on a horizontal ground without slipping with linear speed V. Speed of a particle P on the circumference of the hoop at angle \[\theta \] with the vertical is:
A)
\[2V\,\sin \frac{\theta }{2}\]
done
clear
B)
\[V\,\sin \,\theta \]
done
clear
C)
\[2V\,\cos \,\frac{\theta }{2}\]
done
clear
D)
\[V\,\cos \theta \]
done
clear
View Answer play_arrow
Figure shows the force - time graph for a body of mass 10kg initially at rest. The velocity gained by the body in 6s will be:
A)
zero
done
clear
B)
\[6\,m/s\]
done
clear
C)
\[3\,m/s\]
done
clear
D)
\[4\,m/s\]
done
clear
View Answer play_arrow
The magnetic field at 0 due to current in the infinite wire forming a loop as shown in the figure is:
A)
\[\frac{{{\mu }_{0}}I}{4\pi d}\,(\cos {{\phi }_{1}}+\cos {{\phi }_{2}})\]
done
clear
B)
\[\frac{{{\mu }_{0}}}{4\pi }\times \frac{2I}{d}\]
done
clear
C)
\[\frac{{{\mu }_{0}}I}{4\pi d}\,(\sin {{\phi }_{1}}+\sin {{\phi }_{2}})\]
done
clear
D)
\[\frac{{{\mu }_{0}}}{4\pi }\times \frac{I}{d}\]
done
clear
View Answer play_arrow
An electron of mass m is accelerated through a potential difference of V and then it enters a magnetic field of induction B normal to the lines. Then, the radius of the circular path is:
A)
\[\sqrt{\frac{2e\,\,V}{m}}\]
done
clear
B)
\[\sqrt{\frac{2V\,m}{e\,{{B}^{2}}}}\]
done
clear
C)
\[\sqrt{\frac{2V\,m}{e\,B}}\]
done
clear
D)
\[\sqrt{\frac{2\,V\,m}{{{e}^{2}}B}}\]
done
clear
View Answer play_arrow
The current i in the figure below is:
A)
\[1/5A\]
done
clear
B)
\[1/10A\]
done
clear
C)
\[1/15A\]
done
clear
D)
\[1/45A\]
done
clear
View Answer play_arrow
Two heater wires of equal length are first connected in series and then in parallel. The ratio of heat produced in two cases will be:
A)
\[1:2\]
done
clear
B)
\[1:4\]
done
clear
C)
\[2:1\]
done
clear
D)
\[4:1\]
done
clear
View Answer play_arrow
In the network shown in figure, each resistance is 10. The effective resistance between A and B is:
A)
\[(4/3)\,\Omega \]
done
clear
B)
\[(3/2)\,\Omega \]
done
clear
C)
\[7\,\Omega \]
done
clear
D)
\[(8/7)\,\Omega \]
done
clear
View Answer play_arrow
A 100W Bulb \[{{B}_{1}}\] and two \[60W\] bulbs \[{{B}_{2}}\] and \[{{B}_{3}}\] are connected to a \[250V\] source, as shown in the figure. Now \[{{W}_{1}},{{W}_{2}}\] and \[{{W}_{3}}\] are the output powers of the bulbs \[{{B}_{1}},\,{{B}_{2}}\] and \[{{B}_{3}}\] respectively, then,
A)
\[{{W}_{1}}>{{W}_{2}}={{W}_{3}}\]
done
clear
B)
\[{{W}_{1}}>{{W}_{2}}>{{W}_{3}}\]
done
clear
C)
\[{{W}_{1}}<{{W}_{2}}={{W}_{3}}\]
done
clear
D)
\[{{W}_{1}}<{{W}_{2}}<{{W}_{3}}\]
done
clear
View Answer play_arrow
For the circuit shown in the adjoining figure, the charge on \[4\mu F\]capcitor is:
A)
\[30\mu C\]
done
clear
B)
\[40\mu C\]
done
clear
C)
\[24\mu C\]
done
clear
D)
\[54\mu C\]
done
clear
View Answer play_arrow
Four point charges \[{{q}_{1}},{{q}_{2}},{{q}_{3}}\] and \[{{q}_{4}}\] are placed at the corners of a square of side a, as shown in figure. The potential at the centre of the square is (Given. \[{{q}_{1}}=1\times {{10}^{-8}}C,\] \[{{q}^{2}}=-2\times {{10}^{-8}}C,\]\[{{q}^{3}}=3\times {{10}^{-8}}C,\] \[{{q}^{4}}=2\times {{10}^{-8}}C,\] \[a=1m\])
A)
\[507\,V\]
done
clear
B)
\[607\,V\]
done
clear
C)
\[550\,V\]
done
clear
D)
\[650\,V\]
done
clear
View Answer play_arrow
In the circuit shown, the equivalent capacitance between the point A and B is:
A)
\[\frac{10}{3}\mu F\]
done
clear
B)
\[\frac{15}{4}\mu F\]
done
clear
C)
\[\frac{12}{5}\mu F\]
done
clear
D)
\[\frac{25}{6}\mu F\]
done
clear
View Answer play_arrow
There are two charges \[+1\mu C\] and \[+5\mu C\]. The ratio acting on them will be:
A)
\[1:5\]
done
clear
B)
\[1:1\]
done
clear
C)
\[5:1\]
done
clear
D)
\[1:25\]
done
clear
View Answer play_arrow
An electron collides with a fixed hydrogen atom in its ground state. Hydrogen atom gets excited and the colliding electron loses all its kinetic energy consequently, the hydrogen atom may emit a photon corresponding to the largest wavelength of the Balmer series. The minimum kinetic energy of colliding electron is:
A)
\[10.2\,eV\]
done
clear
B)
\[1.9\,eV\]
done
clear
C)
\[12.09\,eV\]
done
clear
D)
\[12.6\,eV\]
done
clear
View Answer play_arrow
A ray light of wavelength \[6630\overset{o}{\mathop{A}}\,\] is incident on a totally reflecting surface. The momentum delivered by the ray is equal to
A)
\[6.63\times {{10}^{-27}}kg\,m/s\]
done
clear
B)
\[2\times {{10}^{-27}}kg\,m/s\]
done
clear
C)
\[{{10}^{-27}}kg\,m/s\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
In the following diagram, the relation between \[{{\lambda }_{1}},\]and \[{{\lambda }_{2}},\] will be:
A)
\[{{\lambda }_{1}}=\sqrt{{{\lambda }_{2}}}\]
done
clear
B)
\[{{\lambda }_{1}}<{{\lambda }_{2}}\]
done
clear
C)
\[{{\lambda }_{1}}={{\lambda }_{2}}\]
done
clear
D)
\[{{\lambda }_{1}}>{{\lambda }_{2}}\]
done
clear
View Answer play_arrow
If \[{{l}_{1}},{{l}_{2}}\] and \[{{l}_{3}}\] be the lengths of the emitter, base and collector of a transistor, then:
A)
\[{{l}_{1}}={{l}_{2}}={{l}_{3}}\]
done
clear
B)
\[{{l}_{3}}<{{l}_{2}}<{{l}_{1}}\]
done
clear
C)
\[{{l}_{3}}<{{l}_{1}}<{{l}_{2}}\]
done
clear
D)
\[{{l}_{3}}>{{l}_{1}}>{{l}_{2}}\]
done
clear
View Answer play_arrow
In the following circuit \[{{i}_{1}}\] and \[{{i}_{2}}\] are respectively (diodes are ideal):
A)
0 and 0
done
clear
B)
\[5mA\] and \[5mA\]
done
clear
C)
\[5mA\] and 0
done
clear
D)
0 and \[5mA\]
done
clear
View Answer play_arrow
In the output Y of the shown logic gate:
A)
\[Y=\bar{A}+\bar{B}\]
done
clear
B)
\[\bar{A}+\bar{B}\]
done
clear
C)
\[\overline{A+B}\]
done
clear
D)
\[\overline{A.B}\]
done
clear
View Answer play_arrow
Rays are converging towards a convex mirror, final image will be:
A)
real
done
clear
B)
virtual
done
clear
C)
may be real or virtual
done
clear
D)
image will not form
done
clear
View Answer play_arrow
A plane glass plate is kept on a paper on which letters are printed in various colours, colour of the letters which will be more close to upper surface:
A)
yellow
done
clear
B)
red
done
clear
C)
blue
done
clear
D)
green
done
clear
View Answer play_arrow
On introducing a thin sheet of mica (thickness \[12\times {{10}^{-5}}\,cm\]) in path of one of the interfering beams in Young's double slit experiment, the central frings in shifted through a distance equal to the spacing between successive bright frings. The relative index of mica is (wavelength of light used\[\lambda =6\times {{10}^{-5}}cm\])
A)
\[1:33\]
done
clear
B)
\[1:5\]
done
clear
C)
\[2:5\]
done
clear
D)
\[1:478\]
done
clear
View Answer play_arrow
A ray of light falls on a prism ABC (AB = BC) and travels as shown in the figure. The refracting index of the prism material should be greater than:
A)
\[4/3\]
done
clear
B)
\[\sqrt{2}\]
done
clear
C)
\[1.5\]
done
clear
D)
\[\sqrt{3}\]
done
clear
View Answer play_arrow
In an oscillating L - C circuit the maximum charge on the capacitor is Q. The charge on the capacitor, when the energy is stored between the electric and magnetic field is:
A)
\[\frac{Q}{2}\]
done
clear
B)
\[\frac{Q}{\sqrt{2}}\]
done
clear
C)
\[\frac{Q}{\sqrt{3}}\]
done
clear
D)
\[\frac{Q}{3}\]
done
clear
View Answer play_arrow
A varrying magnetic flux linking a coil is given by \[\phi =X{{t}^{2}}\] if at time \[t=3S,\]the emf induced is 9V, then the value of x is:
A)
\[0.06wb{{s}^{-2}}\]
done
clear
B)
\[1.5\,wb{{s}^{-2}}\]
done
clear
C)
\[0.666\,wb{{s}^{-2}}\]
done
clear
D)
\[-1.5\,wb{{s}^{-2}}\]
done
clear
View Answer play_arrow
The equation of an alternating voltage is \[\varepsilon =220\,\sin (\omega t+\pi /6)\]. What is the impendence of the circuit?
A)
\[22\,\Omega \]
done
clear
B)
\[20\,\Omega \]
done
clear
C)
\[18\,\Omega \]
done
clear
D)
\[17\,\Omega \]
done
clear
View Answer play_arrow
The material which shows the effect shown in figure, when placed in a uniform magnetic field is called:
A)
paramagnetic
done
clear
B)
diamagnetic
done
clear
C)
ferromagnetic
done
clear
D)
anti-ferromagnetic
done
clear
View Answer play_arrow
A charged particle is released from rest in a region of steady and a uniform electric and magnetic fields which are parallel to each other. The particle will move in a:
A)
straight line
done
clear
B)
circle
done
clear
C)
helix
done
clear
D)
cycloid
done
clear
View Answer play_arrow
Which of the following statement(s) is/are correct when a mixture of \[NaCl\] and \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] is gently warmed with cone. \[{{H}_{2}}S{{O}_{4}}\]?
A)
A deep red vapours is formed.
done
clear
B)
Vapours when passed into \[NaOH\] solution gives a yellow solution of \[N{{a}_{2}}Cr{{O}_{4}}\]
done
clear
C)
Chromyl chloride is formed
done
clear
D)
All of the these
done
clear
View Answer play_arrow
The reaction
with \[HBr\] gives
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
P-chloroaniline and anilinium hydrochloride can be distinguished by:
A)
\[NaHC{{O}_{3}}\]
done
clear
B)
\[AgN{{O}_{3}}\]
done
clear
C)
Sandmeyer reaction
done
clear
D)
None of these
done
clear
View Answer play_arrow
Sodium nitrate decomposes above \[-{{800}^{o}}C\] to give
A)
\[{{N}_{2}}\]
done
clear
B)
\[{{O}_{2}}\]
done
clear
C)
both [a] and [b]
done
clear
D)
None of these
done
clear
View Answer play_arrow
Which one of the following has the highest molar conductivity?
A)
Diamine dichloroplatinum (II)
done
clear
B)
Tetraamine dichlorocobalt (III) chloride
done
clear
C)
Potassium hexacyanoferrate (II)
done
clear
D)
Pentacarbonyl iron (O)
done
clear
View Answer play_arrow
The Markownikoff?s rule is the best applicable to the reaction between:
A)
\[{{C}_{2}}{{H}_{4}}+HCl\]
done
clear
B)
\[{{C}_{3}}{{H}_{6}}+B{{r}_{2}}\]
done
clear
C)
\[{{C}_{3}}{{H}_{6}}+HBr\]
done
clear
D)
\[{{C}_{3}}{{H}_{8}}+C{{l}_{2}}\]
done
clear
View Answer play_arrow
The enol form of acetone after treatment with \[{{D}_{2}}O\] gives
A)
\[{{H}_{2}}C-\underset{CO}{\mathop{\underset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\]
done
clear
B)
\[{{H}_{3}}C-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-C{{D}_{3}}\]
done
clear
C)
\[{{H}_{2}}C=\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}D\]
done
clear
D)
\[{{D}_{2}}C=\underset{CO}{\mathop{\underset{|}{\mathop{C}}\,}}\,-C{{D}_{3}}\]
done
clear
View Answer play_arrow
On a humid day in summer, the mole fraction of gaseous \[{{H}_{2}}O\] (water vapour) in the air at \[{{25}^{o}}C\] can be as high as\[0.0287\]. Assuming a total pressure of \[0.977\] atm. What is the partial pressure of dry air?
A)
\[94.9\]atm
done
clear
B)
\[0.949\]atm
done
clear
C)
\[949\]atm
done
clear
D)
\[0.648\]atm
done
clear
View Answer play_arrow
Which of the following exists as Zwitter ion?
A)
P-aminophenol
done
clear
B)
Salicylic acid
done
clear
C)
Sulphanilic acid
done
clear
D)
P-amino acetophenone
done
clear
View Answer play_arrow
The number of optical isomers of \[C{{H}_{3}}CH(OH)\] \[CH(OH)CHO\]is:
A)
2
done
clear
B)
3
done
clear
C)
6
done
clear
D)
4
done
clear
View Answer play_arrow
For which of the following sparingly soluble salt, the solubility (s) and solubility product \[({{K}_{sp}})\] are related by the expression\[S={{\left( {\scriptstyle{}^{{{K}_{sp}}}/{}_{4}} \right)}^{{\scriptstyle{}^{1}/{}_{2}}}}\]?
A)
\[BaS{{O}_{4}}\]
done
clear
B)
\[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}\]
done
clear
C)
\[H{{g}_{2}}C{{l}_{2}}\]
done
clear
D)
\[A{{g}_{3}}P{{O}_{4}}\]
done
clear
View Answer play_arrow
Which of the following is true in respect of adsorption?
A)
\[\Delta G<O;\,\,\Delta S>O;\,\Delta H<O\]
done
clear
B)
\[\Delta G<O;\,\,\Delta S<O;\,\Delta H<O\]
done
clear
C)
\[\Delta G>O;\,\,\Delta S>O;\,\Delta H<O\]
done
clear
D)
\[\Delta G<O;\,\,\Delta S<O;\,\Delta H>O\]
done
clear
View Answer play_arrow
If\[{\scriptstyle{}^{x}/{}_{m}}\], is the mass of adsorb ate adosorbed per unit mass of adsorbent. P is the pressure of the adsorbate gas and 'a? and ?b? are constants, which of the following represents langmuir adsorption isotherm?
A)
\[\log \left( \frac{x}{m} \right)=\log \left( \frac{a}{b} \right)+\frac{1}{a}\log \,P\]
done
clear
B)
\[\frac{x}{m}=\frac{b}{a}+\frac{1}{ap}\]
done
clear
C)
\[\frac{1}{({\scriptstyle{}^{x}/{}_{m}})}=\frac{b}{a}+\frac{1}{aP}\]
done
clear
D)
\[\frac{x}{m}=\frac{1+bP}{aP}\]
done
clear
View Answer play_arrow
The hybrid rocket propellant consists of
A)
acrylic rubber and liquid nitrogen tetraoxide
done
clear
B)
polyurethane and ammonium perchlorate
done
clear
C)
nitroglycerine and nitrocellulose
done
clear
D)
liquid hydrogen and liquid oxygen
done
clear
View Answer play_arrow
Boric acid is used in carom boards for smooth gliding of pawns because:
A)
\[{{H}_{3}}B{{O}_{3}}\] molecules are loosely chemically bonded and hence soft.
done
clear
B)
its low density makes it fluffy
done
clear
C)
it is chemically inert with the plywood
done
clear
D)
H-bonding in \[{{H}_{3}}B{{O}_{3}}\] gives it a layered structure
done
clear
View Answer play_arrow
Which of the following is bacteriostatic?
A)
Penicillin
done
clear
B)
Erythromycin
done
clear
C)
Bithional
done
clear
D)
ofloxacin
done
clear
View Answer play_arrow
One mole of acidified \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] on reaction with excess \[KI\] will liberate .... mole of \[{{I}_{2}}\]:
A)
6
done
clear
B)
1
done
clear
C)
3
done
clear
D)
2
done
clear
View Answer play_arrow
\[100\,g\] \[CaC{{O}_{3}}\] is treated with \[1\text{ }L\] of \[1\text{ NHCl,}\] what would be the weight of \[C{{O}_{2}}\] liberated after the completion of the reaction?
A)
\[55\,g\]
done
clear
B)
\[11\,g\]
done
clear
C)
\[22\,g\]
done
clear
D)
\[44\,g\]
done
clear
View Answer play_arrow
What would be the heat released when an aqueous solution containing \[0.5\] mole of \[HN{{O}_{3}}\] is mixed with \[0.3\] mole of \[O{{H}^{-}}\] (enthalpy of neutralization is\[-57.1KJ\])?
A)
\[28.5\text{ }KJ\]
done
clear
B)
\[17.1KJ\]
done
clear
C)
\[45.7\text{ }KJ\]
done
clear
D)
\[1.7\,KJ\]
done
clear
View Answer play_arrow
\[{{A}_{(g)}}+3{{B}_{(g)}}4{{C}_{(g)}}\] Initially concentration of A is equal to that of B. The equilibrium concentrations of A and C are equal \[{{K}_{C}}\] is
A)
\[0.08\]
done
clear
B)
\[0.8\]
done
clear
C)
\[8\]
done
clear
D)
\[80\]
done
clear
View Answer play_arrow
Two moles of \[PC{{l}_{5}}\] is heated in a closed vessel of 2L capacity. When the equilibrium is attained 40% of it has been found to be dissociated. What is the \[{{K}_{C}}\] in \[mol/d{{m}^{3}}\]?
A)
\[0.532\]
done
clear
B)
\[0.266\]
done
clear
C)
\[0.25\]
done
clear
D)
\[0.174\]
done
clear
View Answer play_arrow
Dry air is passed through a solution containing log of a solute in \[90g\]of water and then through pure water. The loss in weight of solution is \[2.5\text{ }g\]and that of pure solvent is\[0.05g\]. Calculate the molecular weight of the solute.
A)
\[50\]
done
clear
B)
\[180\]
done
clear
C)
\[102\]
done
clear
D)
\[25\]
done
clear
View Answer play_arrow
The Van't Hoff factor of \[BaC{{l}_{2}}\] at \[0.01\text{ }M\] concentration is\[1.98\]. The percentage of dissociation of \[BaC{{l}_{2}}\] at this concentration is:
A)
49
done
clear
B)
69
done
clear
C)
89
done
clear
D)
98
done
clear
View Answer play_arrow
Which of the following does not undergo Cannizzaro's reaction?
A)
Benzaldehyde
done
clear
B)
Propanal
done
clear
C)
2, 2-dimethylpropanal
done
clear
D)
formaldehyde
done
clear
View Answer play_arrow
Effective magnetic moment of \[S{{c}^{3+}}\] ion is
A)
\[1.73\]
done
clear
B)
0
done
clear
C)
\[5.92\]
done
clear
D)
\[2.83\]
done
clear
View Answer play_arrow
Potassium permanganate acts as an oxidant in alkaline and acidic media. The final products formed from\[KMn{{O}_{4}}\] in two conditions are respectively:
A)
\[Mn{{O}^{2-}}\] and \[M{{n}^{3+}}\]
done
clear
B)
\[M{{n}^{3+}}\] and \[M{{n}^{2+}}\]
done
clear
C)
\[M{{n}^{2+}}\]and \[M{{n}^{3+}}\]
done
clear
D)
\[Mn{{O}_{2}}\]and \[M{{n}^{2+}}\]
done
clear
View Answer play_arrow
Consider the following cell reaction, \[2F{{e}_{(s)}}+{{O}_{2(g)}}+4{{H}^{+}}_{(aq)}\xrightarrow{{}}2F{{e}^{2+}}_{(aq)}+2{{H}_{2}}{{O}_{(l)}},{{E}^{o}}=1.67V,\] At \[\left[ F{{e}^{2+}} \right]={{10}^{-3}}M,\] \[P({{O}_{2}})=0.1\] atm and \[pH=3,\]the cell potential at \[{{25}^{o}}C\] is
A)
\[1.47\,V\]
done
clear
B)
\[1.77V\]
done
clear
C)
\[1.87V\]
done
clear
D)
\[1.57V\]
done
clear
View Answer play_arrow
The ion that is isoelectronic with \[CO\] is
A)
\[C{{N}^{-}}\]
done
clear
B)
\[O_{2}^{+}\]
done
clear
C)
\[O_{2}^{-}\]
done
clear
D)
\[N_{2}^{+}\]
done
clear
View Answer play_arrow
Extra pure \[{{N}_{2}}\] can be obtained by heating
A)
\[N{{H}_{3}}\] with \[CuO\]
done
clear
B)
\[N{{H}_{4}}N{{O}_{3}}\]
done
clear
C)
\[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\]
done
clear
D)
\[Ba{{({{N}_{3}})}_{2}}\]
done
clear
View Answer play_arrow
Which one of the following has \[\Delta {{S}^{o}}\] greater than zero?
A)
\[Ca{{O}_{(s)}}+C{{O}_{2(g)}}CaC{{O}_{3\,(s)}}\]
done
clear
B)
\[NaC{{l}_{(aq)}}NaC{{l}_{(s)}}\]
done
clear
C)
\[NaN{{O}_{3(g)}}N{{a}^{+}}_{(aq)}+NO_{3(aq)}^{-}\]
done
clear
D)
\[{{N}_{2(g)}}+3{{H}_{2(g)}}2N{{H}_{3(g)}}\]
done
clear
View Answer play_arrow
The solubility of a gas increases in a liquid with
A)
increase of temperature
done
clear
B)
reduction of gas pressure
done
clear
C)
decrease in temperature
done
clear
D)
amount of liquid taken
done
clear
View Answer play_arrow
The packing fraction for a body centred cubic is
A)
\[0.42\]
done
clear
B)
\[0.53\]
done
clear
C)
\[0.68\]
done
clear
D)
\[0.82\]
done
clear
View Answer play_arrow
Which of the following compounds turns white on treatment with \[{{H}_{2}}{{O}_{2}}\]?
A)
\[HgS\]
done
clear
B)
\[PbS\]
done
clear
C)
\[NiS\]
done
clear
D)
\[CuS\]
done
clear
View Answer play_arrow
Potassium super oxide is used in oxygen cylinders in space and submarines because it
A)
absorbs \[C{{O}_{2}}\] and increases \[{{O}_{2}}\] contents
done
clear
B)
eliminates moisture
done
clear
C)
absorbs \[C{{O}_{2}}\]
done
clear
D)
produces ozone
done
clear
View Answer play_arrow
Carbogen is
A)
Pure form of carbon
done
clear
B)
\[COC{{l}_{2}}\]
done
clear
C)
Mixture of \[CO\] and \[C{{O}_{2}}\]
done
clear
D)
Mixture of \[{{O}_{2}}\] and \[C{{O}_{2}}\]
done
clear
View Answer play_arrow
The IUPAC name of the compound is: \[HOOC-C{{H}_{2}}-\underset{COOH}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-C{{H}_{2}}-C{{H}_{2}}-COOH\]
A)
2(carboxymethyl)-pentane-l, 5-dioic acid
done
clear
B)
3-carboxyhexane-l, 6-dioicacid
done
clear
C)
1, 2-dicarboxy pentanoic acid
done
clear
D)
butane-1, 2, 4-tricarboxylic acid
done
clear
View Answer play_arrow
The order of first ionization energies of the elements \[Li,\text{ }Be,\text{ }B,\text{ }Na\] is:
A)
\[Li>Be>B>Na\]
done
clear
B)
\[Be>B>Li>Na\]
done
clear
C)
\[Na>Li>B>Be\]
done
clear
D)
\[Be>Li>B>Na\]
done
clear
View Answer play_arrow
The relationship between the energy of the radiation with a wavelength \[8000\overset{o}{\mathop{A}}\,\] and the energy \[{{E}_{2}}\] of the radiation with a wavelength \[16000\text{ }\overset{o}{\mathop{A}}\,\] is:
A)
\[{{E}_{1}}={{E}_{2}}\]
done
clear
B)
\[{{E}_{1}}=4{{E}_{2}}\]
done
clear
C)
\[{{E}_{1}}=\frac{1}{2}{{E}_{2}}\]
done
clear
D)
\[{{E}_{1}}=2{{E}_{2}}\]
done
clear
View Answer play_arrow
When cyclohexane is poured on water it floats because
A)
Cyclohexane is in boat form
done
clear
B)
Cyclohexane is in chair form
done
clear
C)
Cyclohexane is in crown form
done
clear
D)
cyclohexane is less dense than water
done
clear
View Answer play_arrow
In the reaction\[C{{H}_{3}}C{{H}_{2}}COON{{H}_{4}}\xrightarrow{{{P}_{2}}{{O}_{2}}}A\xrightarrow{{\scriptstyle{}^{{{H}^{+}}}/{}_{{{H}_{2}}O}}}B\]A and B are
A)
\[C{{H}_{3}}C{{H}_{2}}CON{{H}_{2}},C{{H}_{3}}C{{H}_{2}}CO{{O}^{-}}\]
done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}COON{{H}_{2}},C{{H}_{3}}C{{H}_{2}}COOH\]
done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}CN,C{{H}_{3}}C{{H}_{2}}COOH\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}CN,C{{H}_{3}}C{{H}_{2}}CO{{O}^{-}}\]
done
clear
View Answer play_arrow
An optically active compound 'X' has molecular formula \[{{C}_{4}}{{H}_{8}}{{O}_{3}}\]. It evolves \[C{{O}_{2}}\]with aq. \[NaHC{{O}_{3}}\]. 'X' reacts with \[LiAl{{H}_{4}}\] to give an achiral compound. The compound 'X' is
A)
\[C{{H}_{3}}C{{H}_{2}}\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,HCOOH\]
done
clear
B)
\[C{{H}_{3}}\underset{OMe}{\mathop{\underset{|}{\mathop{C}}\,}}\,HCOOH\]
done
clear
C)
\[C{{H}_{3}}\underset{C{{H}_{2}}OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,HCOOH\]
done
clear
D)
\[C{{H}_{3}}\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,HC{{H}_{2}}COOH\]
done
clear
View Answer play_arrow
Formalin is the commercial name of
A)
formic acid
done
clear
B)
fluoro form
done
clear
C)
para-formaldehyde
done
clear
D)
40% aqueous solution of methanol
done
clear
View Answer play_arrow
A (major product); A is
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
\[{{C}_{7}}{{H}_{8}}\xrightarrow{3C{{l}_{2}}.\Delta }A\xrightarrow{Fe,B{{r}_{2}}}B\xrightarrow{Zn/HCl}C\] Here, the compound C is
A)
3-bromo 2, 4, 6-trichlorotoluene
done
clear
B)
O-bromotoluene
done
clear
C)
P-bromotoluene
done
clear
D)
m-bromotoluene
done
clear
View Answer play_arrow
The functional groups present is 'Salol? are
A)
\[-N{{H}_{2}}\] and \[-OR\]
done
clear
B)
\[-OH\] and \[-COOR\]
done
clear
C)
\[-OH\] and\[-COR\]
done
clear
D)
\[-N{{H}_{2}}\] and \[-COOH\]
done
clear
View Answer play_arrow
Select the incorrect match
A)
Plants Stamens Aestivation Pea Diadelphous Vexillary
done
clear
B)
Plants Stamens Aestivation China-Rose Monoadelphous Twisted
done
clear
C)
Plants Stamens Aestivation Cassia Didynamous Imbricate
done
clear
D)
Plants Stamens Aestivation Tomato Epipetalous Valvate
done
clear
View Answer play_arrow
If glucose units combine with each other to form, starch, the addition of more glucose to this polymer is always on
A)
Reducing side
done
clear
B)
Non-reducing side
done
clear
C)
Right side of chain
done
clear
D)
Both [a] and [c]
done
clear
View Answer play_arrow
Match the following
Column I Column II A. Whorled (I) Calotropis B. Opposite (II) China rose C. Alternate (III)Alstonia (IV) Guava
A)
A-III B-I C-II
done
clear
B)
A-III B-II C-I
done
clear
C)
A-III B-IV C-I
done
clear
D)
A-II B-III C-IV
done
clear
View Answer play_arrow
Natural rubber is an example of
A)
Cholesterol
done
clear
B)
Terpenes
done
clear
C)
Phospholipid
done
clear
D)
Essential oil
done
clear
View Answer play_arrow
Read the following statements with respect to internal structure of dorsiventral leaf and select the right choice
I. The adaxial epidermis generally bears more stomata II. The palisade parenchyma is a axially placed III. Venis vary in thickness in the reticulate venation IV. Presence of bundle sheath cells
A)
I and II are correct
done
clear
B)
II and III are correct
done
clear
C)
I and III are correct
done
clear
D)
III and IV are correct
done
clear
View Answer play_arrow
The positional information regarding sequence of amino acid in a protein in included under
A)
Secondary structure
done
clear
B)
Quarternary structure
done
clear
C)
3-D structure
done
clear
D)
Primary structure
done
clear
View Answer play_arrow
The features ofmetaphase of mitosis are all except
A)
Chromosomes are moved to the spindle equator
done
clear
B)
Chromosomes get aligned along the metaphase plate through spindle fibre to single pole only
done
clear
C)
Chromosomes are clearly observed under microscope
done
clear
D)
Spindle fibres attach to kinetochores of chromo somes
done
clear
View Answer play_arrow
Which of the following enzyme catalyses the removal of groups from substrates by mechanism other than hydrolysis leaving a double bond?
A)
Transferase
done
clear
B)
Lyase
done
clear
C)
Ligase
done
clear
D)
Dehydrogenase
done
clear
View Answer play_arrow
Match the following
Column I Column II A. Palmately compound leaves (I) Neem B. Pinnately compound leaves (II) Silk cotton C. Fleshy leaves (III) Pea D. Leaf tendril (IV) Onion
A)
A-I B-II C-III D-IV
done
clear
B)
A-I B-II C-IV D-III
done
clear
C)
A-I B-III C-IV D-II
done
clear
D)
A-II B-I C-IV D-III
done
clear
View Answer play_arrow
Find the odd one with respect to wax
A)
Spermaceti
done
clear
B)
Wool fat
done
clear
C)
Cerumen
done
clear
D)
Sesame oil
done
clear
View Answer play_arrow
Select the incorrect statement with respect to stem
A)
it does not conduct water
done
clear
B)
it bears nodes and internodes
done
clear
C)
it is generally green when young
done
clear
D)
it may be modified to perform different functions
done
clear
View Answer play_arrow
The plant which bears adventitious roots is
A)
Pea
done
clear
B)
Monstera
done
clear
C)
Turnip
done
clear
D)
Radish
done
clear
View Answer play_arrow
Nitrogenous compound present in lecithin is
A)
Ethanolamine
done
clear
B)
Choline
done
clear
C)
Serine
done
clear
D)
Inositol
done
clear
View Answer play_arrow
Find incorrect match
A)
Actinomorphic - Datura
done
clear
B)
Zygomorphic - Pea
done
clear
C)
Perigynous - Rose
done
clear
D)
Epigynous - Peach
done
clear
View Answer play_arrow
\[{{A}_{3+3}}{{G}_{(3)}}\] condition is concerned with the members of
A)
Potato family
done
clear
B)
Tomato family
done
clear
C)
Lily family
done
clear
D)
Pea family
done
clear
View Answer play_arrow
If the R-group in the proteinaceous amino acid is hydrogen the amino acid will be
A)
Glycine
done
clear
B)
Alanine
done
clear
C)
Serine
done
clear
D)
Aspartate
done
clear
View Answer play_arrow
Amylopectin and glycogen are branched homopolymers of glucose residue. At the branching point which type of linkage is found?
A)
\[\alpha -1,\text{ }4\]linkage
done
clear
B)
\[\alpha -1,\text{ 6}\] linkage
done
clear
C)
\[\beta -1,\text{ 4}\] linkage
done
clear
D)
\[\beta -1,\text{ 6}\] linkage
done
clear
View Answer play_arrow
Select the wrong statement with respect to coconut
A)
Endosperm - Formed by triple fusion
done
clear
B)
Mesocarp - Help is dispersal of fruit
done
clear
C)
Fruit - Drup and developed from superior ovary
done
clear
D)
Epicarp - Thick, fibrous & edible
done
clear
View Answer play_arrow
Which of the following enzymes have same substrate specificity but differ from one another in their substrate affinity, activity maxima and regulatory control?
A)
Isozymes
done
clear
B)
Coenzymes
done
clear
C)
Zymogens
done
clear
D)
Allosteric enzymes
done
clear
View Answer play_arrow
Consider the following statements with respect to Solanaceac family and select the right choice
A)
It is widely distributed in tropics, subtropics and even temperate zones
done
clear
B)
Leaves are compound and stipulate
done
clear
C)
Presence of axile placentation
done
clear
D)
Obliquely placed ovary with swollen placenta
done
clear
View Answer play_arrow
Which category of molecule is formulated by applying \[{{C}_{n}}{{H}_{2n-2x}}{{O}_{2}}\] empirical formula
A)
Stearic acid
done
clear
B)
Glucose
done
clear
C)
Cellulose
done
clear
D)
Oleic acid
done
clear
View Answer play_arrow
Which of the following are different in RNA and DNA?
A)
Sugar and Purine
done
clear
B)
Sugar and pyrimidine
done
clear
C)
Phosphate and Sugar
done
clear
D)
Purines and Pyrimidines
done
clear
View Answer play_arrow
Which statement is not suitable for proteins or amino acid?
A)
They are heteropolymers
done
clear
B)
They are substituted methanes
done
clear
C)
They have both \[N{{H}_{2}}\] and COOH groups
done
clear
D)
All protein forming amino acids are optically active
done
clear
View Answer play_arrow
A cell is placed in O.S.M. solution of sugar and no change in volume of cell is found. What is the concentration of the cell sap?
A)
\[0.20M\]
done
clear
B)
\[50M\]
done
clear
C)
\[0.5M\]
done
clear
D)
\[0.4M\]
done
clear
View Answer play_arrow
During stomatal opening in a plant, which of the following does not occur?
A)
Increased TP of guard cell
done
clear
B)
Carboxylation of PEP in guard cell
done
clear
C)
Dissociation of malic acid in guard cell
done
clear
D)
Decrease in pH is guard cell
done
clear
View Answer play_arrow
Following metabolites are insoluble in \[C{{H}_{3}}COOH\]except
A)
Proteins
done
clear
B)
Lipids
done
clear
C)
Nucleic acid
done
clear
D)
Monosaccharides
done
clear
View Answer play_arrow
What would be \[{{\psi }_{P}}\] in cell - A and Cell B respectively?
Cell - A Cell - B \[{{\psi }_{w}}=-600kPa\] \[{{\psi }_{w}}=-900kPa\] \[{{\psi }_{s}}=-1200kPa\] \[{{\psi }_{s}}=-1000kPa\]
A)
\[+600-100\,kPa\]
done
clear
B)
\[-600,+100\,kPa\]
done
clear
C)
\[-1800,+1900\,kPa\]
done
clear
D)
\[600,+100\,kPa\]
done
clear
View Answer play_arrow
Saliva is produced by X number of salivary glands situated Y buccal cavity and secrete salivary juice Z buccal cavity
A)
X-3 Y-inside Z-inside
done
clear
B)
X-2 Y-outside Z-outside
done
clear
C)
X-5 Y-inside Z-outside
done
clear
D)
X-6 Y-outside Z-inside
done
clear
View Answer play_arrow
Xylem helps in translocation of
A)
Amides
done
clear
B)
Water and mineral salts
done
clear
C)
Some hormones
done
clear
D)
More than one option is correct
done
clear
View Answer play_arrow
Which of the following endopetidase are autocatalytic?
A. Pepsin B. Carboxypeptidase C. Aminopeptidase D. Trypsin
A)
A, C
done
clear
B)
B, C
done
clear
C)
A,D
done
clear
D)
All of these
done
clear
View Answer play_arrow
Select the incorrect statement with respect to facilitated diffusion
A)
highly selective
done
clear
B)
uphill transport
done
clear
C)
transport saturates
done
clear
D)
requires special membrane proteins
done
clear
View Answer play_arrow
Cell responsible for the release of castles intrinsic factor
A)
Chief cells
done
clear
B)
Peptic cell
done
clear
C)
Parietal cell
done
clear
D)
Neck cells
done
clear
View Answer play_arrow
Read the following statements carefully and find the correct option
[A] \[{{C}_{3}}\] plants are twice as efficient as \[{{C}_{4}}\] plants in terms of fixing carbon [B] The evolution of the \[{{C}_{4}}\] photosynthetic system is probably one of the strategics for maximizing the availability of \[C{{o}_{2}}\] [C] Transpiration indirectly supplies water for photosynthesis
A)
B & C are correct
done
clear
B)
Only C is correct
done
clear
C)
A & B are correct
done
clear
D)
Only A is correct
done
clear
View Answer play_arrow
Which is true regarding absorption of glucose?
A)
Glucose is absorbed along with \[{{N}_{a}}+\] and both move against concentration gradient.
done
clear
B)
Glucose is absorbed along with \[{{N}_{a}}+\] and \[{{N}_{a}}+\] moves along concentration gradient.
done
clear
C)
Absorption of glucose occurs by facilitated diffusion only.
done
clear
D)
Both glucose and \[{{N}_{a}}+\] absorption are along concentration gradient.
done
clear
View Answer play_arrow
Find the incorrect statement
A)
Porins allow molecules up to the size of small proteins to pass through
done
clear
B)
Porins are associated with the other membranes ofmitochondria, plastids & some bacteria
done
clear
C)
For a solution at atmospheric pressure, the \[{{\psi }_{w}}\] is equal to zero
done
clear
D)
Some carrier or transport proteins allow diffusion only if two types of molecules move together
done
clear
View Answer play_arrow
The feeling of fullness due to inadequate enzyme secretion, anxiety, food poisoning over eating is better defined by a term
A)
Constipation
done
clear
B)
Indigestion
done
clear
C)
Diarrhea
done
clear
D)
Vomiting
done
clear
View Answer play_arrow
Which of the following statement is wrong with respect to imbibitions?
A)
Affinity between the adsorbant and the liquid is not a pro-requisite
done
clear
B)
It is diffusion process
done
clear
C)
It involves both capillarity and adsorption
done
clear
D)
Phycocolloids are best imbibants
done
clear
View Answer play_arrow
Which taxonomic category will have similar taxon in the classification of mango and wheat?
A)
Class
done
clear
B)
Order
done
clear
C)
Division
done
clear
D)
Family
done
clear
View Answer play_arrow
Which of the following cnidarians exists in both forms and exhibit metagenesis?
A)
Meandrina
done
clear
B)
Gorgonia
done
clear
C)
Pennalula
done
clear
D)
Obelia
done
clear
View Answer play_arrow
Exclusive character assigned to Kingdom Monera in five Kingdom system of classification as proposed by R.H. Whittaker is/are
A)
Chemosynthetic nutrition and subcellular body organisation
done
clear
B)
Non-cellulosic cell wall and prokaryotic organisation
done
clear
C)
Prokaryotic cell type and chemosynthetic nutrition
done
clear
D)
Ainaerobic respiration and absence of nuclear membrane
done
clear
View Answer play_arrow
The scientific and common names of certain animals are given below. Mark the correct option
Scientific Name Common Name A. Antedon Brittle star B. Loligo Cattle fish C. Dentalium Tusk shell D. Euspongia Bath sponge
A)
A, B and C are wrong
done
clear
B)
A is wrong but B, C and D are correct
done
clear
C)
A and B arc wrong but C and D are correct
done
clear
D)
A and B are correct but C and D are wrong
done
clear
View Answer play_arrow
Prokaryotic organizations capable of nitrogen fixation in specialized cells called heterocyst
A)
Are generally not surrounded by gelatinous sheath in colonial forms
done
clear
B)
Have chlorophyll a similar to green plants
done
clear
C)
May have chemosynthetic nutrition also
done
clear
D)
Lack photolysis of water and PSI
done
clear
View Answer play_arrow
Read the following characters
A. Mostly terrestrial B. Body is covered by dry and cornified skin C. Heart is three chambered D. Fertilisation is internal
All the given characters are applicable for
A)
Exocoetus
done
clear
B)
Ichthyophis
done
clear
C)
Colotes
done
clear
D)
Columba
done
clear
View Answer play_arrow
Kingdom fungi is classified into various classes on the basis of all, except
A)
Morphology of mycelium
done
clear
B)
Mode of spore formation
done
clear
C)
Types of fruiting bodies
done
clear
D)
Method of plasmogamy
done
clear
View Answer play_arrow
All cells in epithelium are held together with little intercellular material. In nearly all animal tissues, specialized junctions provide both structural and functional Jink between individual cells. Which of the following junctions facilitate the cells to communicate with each other by connection the cytoplasm of adjoining cell?
A)
Tight junctions
done
clear
B)
Adhering junctions
done
clear
C)
Dcsmosome
done
clear
D)
Gap junctions
done
clear
View Answer play_arrow
Select incorrect statement with respect to viruses
A)
No virus contain both RNA and DNA
done
clear
B)
The term virus was given by Ivanowsky
done
clear
C)
Genetic material in viruses are infectious us
done
clear
D)
They are inert crystalline structures outside the living cells or hosts
done
clear
View Answer play_arrow
Read the following statements with respect to B-DNA
A. The two strands of polynucleotides are antiparallel B. Backbone is formed by the sugar - phosphate sugar chain C. At each step of ascent the strand turns \[{{36}^{o}}\] D. The rise per base pair would be 34 A
How many statements are correct?
A)
One
done
clear
B)
Two
done
clear
C)
Three
done
clear
D)
Four
done
clear
View Answer play_arrow
Brown algae vary in colour from olive green to various shades of brown depending upon the amount of
A)
Algin in their cell wall
done
clear
B)
Fucoxanthin present in them
done
clear
C)
Reserve food is mannitol in cells
done
clear
D)
Salts in water where they are found
done
clear
View Answer play_arrow
Enzyme catalysed reactions proceed at rates vastly higher than that of uncatalysed ones, for example \[C{{o}_{2}}+{{H}_{2}}O\xrightarrow{Carbonic\,\,anhydrase}{{H}_{2}}C{{o}_{3}}\] (Carbonic acid) in the absence of any enzyme this reaction is very slow, with about _A_ molecules of \[{{H}_{2}}C{{O}_{3}}\] being formed in an hour. But by using carbonic anhydrase, the reaction speeds dramatically with about ___B___. molecules being formed every second. Choose the option which correctly fills up the blanks A and B
A)
done
clear
B)
done
clear
C)
A B 10 million 60 million
done
clear
D)
done
clear
View Answer play_arrow
If the margins of sepals on petals overlap one another but not in any particular direction like cassia, the aestivation is
A)
Vexillary
done
clear
B)
Imbricate
done
clear
C)
Valvate
done
clear
D)
Twisted
done
clear
View Answer play_arrow
In monocotyledonous seeds the outer covering of endosperm separates the embryo by a protcinaceous layer called
A)
Scutcllum
done
clear
B)
Coleorhiza
done
clear
C)
Aleurone layer
done
clear
D)
Coleoptile
done
clear
View Answer play_arrow
Mark the odd one with respect to nucleosides
A)
Adenosine
done
clear
B)
Guanosine
done
clear
C)
Cytosine
done
clear
D)
Thymidine
done
clear
View Answer play_arrow
Given below is a list of some polysaccharide
A. Cellulose B. Starch C. Glycogen D. Paper
Which of these can hold \[{{I}_{2}}\] molecules in helical portion
A)
A, B
done
clear
B)
A, B, C
done
clear
C)
C, D
done
clear
D)
B, C
done
clear
View Answer play_arrow
Which is not a feature of lily family?
A)
Cymose inflorescence often umbellate clusters
done
clear
B)
Tricarpellary, syncarpous, unilocular superior ovary
done
clear
C)
Capsule type of fruits with endospermous seeds
done
clear
D)
Epiphyllous stamens
done
clear
View Answer play_arrow
The irregular fold, rugal are found in
A)
Ileum
done
clear
B)
Oesophagus
done
clear
C)
Stomach
done
clear
D)
Duodenum
done
clear
View Answer play_arrow
Succus enteric us is not related to
A)
Lipases
done
clear
B)
Amylases
done
clear
C)
Nucleosidases
done
clear
D)
Dipeptidases
done
clear
View Answer play_arrow
The circulating blood has similar content in one of the following sets of blood vessels
A)
Renal vein and pulmonary vein
done
clear
B)
Hepatic vein and pulmonary artery
done
clear
C)
Pulmonary vein and pulmonary artery
done
clear
D)
Pulmonary artery and dorsal aorta
done
clear
View Answer play_arrow
The blood group in which both antigens (A and B) present on both surface of RBC is
A)
O
done
clear
B)
A
done
clear
C)
B
done
clear
D)
AB
done
clear
View Answer play_arrow
In which of the following chronic disorder alveolar walls are damaged due to which respiratory surface is decreases
A)
Bronchitis
done
clear
B)
Whooping cough
done
clear
C)
Bronchial asthma
done
clear
D)
Emphysema
done
clear
View Answer play_arrow
Chlorosis in plants is generally due to deficiency of
A)
\[Cu,\text{ }K,\text{ }N\]
done
clear
B)
\[K,\text{ }Mg,\text{ }B\]
done
clear
C)
\[P,\text{ }Mo,\text{ }N\]
done
clear
D)
\[Fe,\text{ }Zn,\text{ }Mg\]
done
clear
View Answer play_arrow
Almost 90% of the volume of a plant cell is occupied by
A)
Plastid
done
clear
B)
Vacuoles
done
clear
C)
Mitochondria
done
clear
D)
ER
done
clear
View Answer play_arrow
Stroma lamellae membrane in chloroplast
A)
Do not have Ps-I and NADP reductase
done
clear
B)
Have PS-II and PS-I but not NADP reductase
done
clear
C)
Do not have Ps-II and NADP reductase
done
clear
D)
Have only Ps-I and NADP reductase enzyme
done
clear
View Answer play_arrow
Cytochromc C in mitochondrial E.T.S. is a X protein attached to the Y surface of inner membrane, select X and Y respectively
A)
small, outer
done
clear
B)
small, inner
done
clear
C)
large, outer
done
clear
D)
large, inner
done
clear
View Answer play_arrow
Select odd one with respect to bye product of fermentation
A)
Evolution of \[C{{O}_{2}}\]
done
clear
B)
Formation of water
done
clear
C)
oxidation of glycolytz NADH
done
clear
D)
Organic acid are always end product
done
clear
View Answer play_arrow
Flowering can be inhibited when the plant exposed to light above the critical photoperiod is
A)
Coffee, Cotton
done
clear
B)
Rice, Sugar beat
done
clear
C)
Tomato, Maize
done
clear
D)
Sugarcane, Cocklebur
done
clear
View Answer play_arrow
Plant families like convolvulaceae and poaceae are
A)
Different taxa of same order
done
clear
B)
Group of related genera of same class
done
clear
C)
Different taxa same division
done
clear
D)
Group of related genera of different classes and division
done
clear
View Answer play_arrow
Which of the following statements are incorrect about the enzyme telomerase?
A. Telomeric activity is low in normal differentiated cells but is high in various cancer cells B. Telomerase enzyme is ribonucleoprotein C. cells lacking telomerase gradually lose DNA at the telomeres D. Mutation in \[{{P}^{53}}\]gene suppresses the activity of telomerase enzyme
A)
B Only
done
clear
B)
B & C
done
clear
C)
D Only
done
clear
D)
A & D
done
clear
View Answer play_arrow
The major or main criteria of two Kingdoms and five Kingdoms System of classification are respectively
A)
Cell wall and body organization
done
clear
B)
Reproduction and phylogeny
done
clear
C)
Nutrition and cell type
done
clear
D)
Cell wall and nutrition
done
clear
View Answer play_arrow
If we talk about human evolutionary line, the future human generations will be less adapted to the environment due to
A. Genetic drift B. Mutations C. Natural Selection D. Geographical isolation
A)
B only
done
clear
B)
A & B only
done
clear
C)
C only
done
clear
D)
A, B, C & D
done
clear
View Answer play_arrow
Which of the following is not the character of human blood fluke, schistosoma mansoni?
A)
It causes the disease bilharziasis
done
clear
B)
Female is cylindrical and is lodged in the gynaecophoric canal of male
done
clear
C)
Cercaria larva infects man when an individual is bathing is infected pool or when he comes in contact with contaminated water
done
clear
D)
The different stage in its life cycle are miracidiums sporocyst, rediae, cercariae, and metacercaria
done
clear
View Answer play_arrow
Find correct match with respect to all the three columns
A)
Column I Column II Column III Nostoc OEC in thylakoid Branched Filamentous
done
clear
B)
Column I Column II Column III Chrysophytes Soap box structure Flagellate and naked body
done
clear
C)
Column I Column II Column III Myco plasma Facultative anaerobe Linear DNA
done
clear
D)
Column I Column II Column III Slime moulds Plasmodium Cellulosic body wall
done
clear
View Answer play_arrow
Consider the following statements and select correct one
I. The white rust causing fungus on mustard is facultative parasite II. Dikaryophase stage is short lived in phycomycetes III. Common a sexual spores in conjugation fungi are cndogenously formed non-motile spores IV. Conidia are pigmented in penicillium V. Trichoderma are effective bio control agents VI. Most of the animal viruses have ssDNA
A)
II, IV & 5
done
clear
B)
I, III & IV
done
clear
C)
III,V&VI
done
clear
D)
All are correct, except a
done
clear
View Answer play_arrow
The main plant body is sporophyte with flowers tap root, stem, and leaves in
A)
Pteridophytes
done
clear
B)
Gymnosperms
done
clear
C)
Angiosperms
done
clear
D)
Non-vascular amphibians of plant kingdom
done
clear
View Answer play_arrow
The sickle cell (s) allele has a relatively high frequency \[(0.12)\] in central Africa, even though individuals homozygous for this allele usually die before they reach the reproductive age. Which of the following statements are correct for Sickle cell anaemia?
I. The defect is caused by the substitution of glutamic acid by valine at sixth position of the beta chain of the haemoglobin. II. IIeterozygotes \[(H{{b}^{A}}H{{b}^{s}})\] individuals appear apparently unaffected and enjoy some resistance to malaria. III. The mutant haemoglobin molecule undergoes polymerization under low oxygen tension causing the change in the shape of the RBC. IV Female homozygous for this allele are more fertile than those who lack it.
A)
I and II
done
clear
B)
I, II and IV
done
clear
C)
I, III and IV
done
clear
D)
II, I and III
done
clear
View Answer play_arrow
In the life cycle of Pinus
A)
Tap root is associated with colomus as my corrhiza
done
clear
B)
Needle shaped leaves are articulaty veined with thick cuticle
done
clear
C)
Female gametophyte is multicellular endosperm
done
clear
D)
Secondary growth occurs which leads to the formation of heteroxylous and pychoxylic Wood
done
clear
View Answer play_arrow
Consider the following statement and select correct set of features for liliaccae in given options
A. Annual and biennial plants are dominating B. Perennial herbs with rhizome, bulb and corms C. Stipulate leaves with parallel venation D. Trilocular ovary with axile placentation E. Actionom orphic, trimerous flowers F. Fruits are mostly berry, rarely capsule
A)
B, D and E only
done
clear
B)
A, C and F only
done
clear
C)
B, C & E only
done
clear
D)
A, B, D & E only
done
clear
View Answer play_arrow
Mark the incorrect statement regarding the mechanism of muscle contraction
A)
ATP hydrolysis occurs before the start of power stroke
done
clear
B)
Presence of ATP in myosin head inhibits the cross bridge formation
done
clear
C)
Presence of ADP and IP in myosin head stimulates recovery stroke
done
clear
D)
Presence of \[C{{a}^{+2}}\] with troponin allows binding of the myosin head with actin filament
done
clear
View Answer play_arrow
In the following table, method of birth control along the device are given, which of the following is not a correct match?
A)
Method of birth control Device Barrier Condoms, diaphragms, cervical caps
done
clear
B)
Method of birth control Device IUDs Multiload 375, CuT, Cu7
done
clear
C)
Method of birth control Device Surgical technique Vasectomy and tubectomy
done
clear
D)
Method of birth control Device Administering hormones Saheli, POP
done
clear
View Answer play_arrow
Stele in flowering plants is all tissues on the inneside of the
A)
Pericycle
done
clear
B)
Endodermis
done
clear
C)
Vascular cambium
done
clear
D)
Cork cambium
done
clear
View Answer play_arrow
Find correct match
Column I Column II A. Cytoskeleton I. 9 + 2 array B. Axoneme II. Maintenance of cell shape C. Nucleolus III. Oxidative phosphorylation D. Mitochordria IV. Active r-RNA synthesis
A)
A-II B-I C-IV D-III
done
clear
B)
A-II B-I C-III D-IV
done
clear
C)
A-I B-II C-IV D-III
done
clear
D)
A-I B-II C-III D-IV
done
clear
View Answer play_arrow
If we insert the foreign DNA in the coding sequence of the enzyme (3-galactosidase, then which of the following statements are correct?
A. The presence of a chromogeric substrate gives blue colonies if the plasmid in the bacteria has an insert B. Presence of inset results into insertional inactivation of \[\beta \]-galactosidase C. Rccombinant colonies do not produce any colour
A)
A only
done
clear
B)
A & B
done
clear
C)
B only
done
clear
D)
B & C
done
clear
View Answer play_arrow
Crossing of Animals of same breed which are not related by descent for 4 to 6 generations on either side is called
A)
Crossbreeding
done
clear
B)
Out crossing
done
clear
C)
Out breeding
done
clear
D)
Interspecific hybridization
done
clear
View Answer play_arrow
Which of the following statement is incorrect about the knee jerk reflex
A)
Muscle spindle acts as stretch receptor
done
clear
B)
It is monosynaptic reflex
done
clear
C)
Nerve impulse travels along sensory which synapse with motor neuron and no interneurons are involved
done
clear
D)
Hamstring muscle contracts
done
clear
View Answer play_arrow
Source of smack is
A)
Papaver
done
clear
B)
Erythroxylon
done
clear
C)
Canabis
done
clear
D)
Claviceps
done
clear
View Answer play_arrow
An animal has 6 pair of appendages. The egg hatch within the female body. They bring forth the young alive. This is
A)
Millipede
done
clear
B)
Centipede
done
clear
C)
Arachnida
done
clear
D)
Neoplina
done
clear
View Answer play_arrow
Select correct match
A)
Turgid cell \[\to {{\psi }_{w}}={{\psi }_{s}}\]
done
clear
B)
Fully plasmolysed cell \[\to {{\psi }_{w}}\] negative than \[{{\psi }_{s}}\]
done
clear
C)
Flaccid cell \[\to {{\psi }_{s}}={{\psi }_{p}}\]
done
clear
D)
Normal plant cell \[\to \] DPD is higher than OP
done
clear
View Answer play_arrow
\[{{C}_{3}}\] plants resemble with \[{{C}_{4}}\] plants in
A)
Showing Warburg effect
done
clear
B)
Per carbon assimilation ratio
done
clear
C)
Synthesis site for assimilatory power
done
clear
D)
Rubisco activity in similar type of cell
done
clear
View Answer play_arrow
In plants when zygote undergoes embryogeny, type of growth pattern is
A)
Geometric only
done
clear
B)
Arithmetic only
done
clear
C)
Initially arithmetic but later on geometric
done
clear
D)
In beginning geometric but later it is arithmetic
done
clear
View Answer play_arrow
Select incorrect, reproduction in organism.
A)
Marchantia is dioecious
done
clear
B)
Chromosome number are 30 in maize meiocytes
done
clear
C)
Silene is trioecious
done
clear
D)
Papaya is dioecious
done
clear
View Answer play_arrow
Which bioactive molecule is used an immunosuppressive agent
A)
TPA
done
clear
B)
Statins
done
clear
C)
Cydosporin
done
clear
D)
All of these
done
clear
View Answer play_arrow