question_answer2) According to Debye's \[{{T}^{3}}\]law, the specific heat of many solids at low temperature T vanes acceding to the relation \[C=2{{T}^{3}},\]where a is constant. The heat energy required to raise the temperature of 4kg mass from \[T=1\]to\[T=3K\]
question_answer3) The work done in turning a magnet of magnetic moment M by an angle of 900 from the meridian is n times the corresponding work done to turn it through an angle of\[60{}^\circ \]
question_answer4) If M is the mass of rocket, r is rate of ejection of gases and u is velocity of gases with respect to rocket, then acceleration of the rocket\[\frac{dv}{dt}\]is equal to
question_answer5) 5 beat/s are produced on blowing together two closed organ pipes of same diameter but of different lengths. If shorter pipes is of 10 cm length and speed of sound m air is 300 m/s, length of other pipe is
question_answer6) Two resistors\[400\,\Omega \]and\[800\,\Omega \]are connected in series with a 6V battery. The potential difference measured by voltmeter of\[10\,\Omega \]across\[400\,\Omega \]resistor is
question_answer7) A physical quantity x is represented by\[x={{M}^{a}}{{L}^{b}}{{T}^{-c}}\]and the maximum percentage error in measurement M, L and T are \[\alpha ,\beta \] and \[\gamma \]respectively, then the total maximum percentage error in\[x\]is
question_answer8) The four capacitors, each of\[25\text{ }\mu F\]are connected as shown in figure. The DC voltmeter reads 200 V. The charge on each plate of the capacitor is
question_answer9) In the uranium radioactive series, the initial nucleus is\[_{92}{{U}^{238}}\] and that the final nucleus is \[_{82}P{{b}^{206}}\]When uranium nucleus decays to lead, the number of \[\text{ }\!\!\alpha\!\!\text{ -}\]particles and \[\beta -\]particles emitted are
question_answer10) A bullet is fired from a gun. The force on the bullet is given by\[F=600-2\times {{10}^{5}}t,\]where F is in newton and t is in second. The force on the bullet becomes zero as soon as it leaves the barrel. What is the average impulse imparted to the bullet?
question_answer11) Forces 5 N, 12 N and 13 N are in equilibrium. If\[sin\text{ }23{}^\circ =\frac{5}{13},\]the angle between 5 N force and 13 N force is
question_answer12) The speed of earth's rotation about its axis is co. Its speed increases to\[x\]times to make effective acceleration due to gravity equal to zero at the equator,\[x\]is
question_answer13) Heat absorbed by a mass of 1 g of helium, when its temperature rises from\[11{}^\circ C\]to \[131{}^\circ C\]at constant volume, is H. Heat absorbed by 7 g of nitrogen, when its temperature rises from\[11{}^\circ C\]to\[71{}^\circ C\]at constant volume, is\[{{H}_{N}}\]. The ratio of H to\[{{H}_{N}}\] is
question_answer14) Given that 1 kg of copper contains approximately\[{{10}^{25}}\]atoms, and density of copper is\[9\times {{10}^{3}}kg/{{m}^{3}}\]. A rough estimate of the diameter of copper atom is
question_answer15) In a simple pendulum the breaking strength of the string is double the weight of the bob. The bob is released from rest when the string is horizontal. The string breaks when it makes an angle\[\theta \]With the vertical
question_answer17) The displacement\[x\]of a body varies with time as \[x=-\frac{1}{3}{{t}^{2}}+16t+3\] where\[x\]is in metre and t in second. The time taken by the body to come to rest is
question_answer18) Two pendulums of lengths 100 cm and 121 cm start vibrating. At some instant the two are at the mean position in the same phase. After how many vibrations of the longer pendulum will the two be in the same phase at the mean position again?
question_answer19) A dip needle lies initially in the magnetic meridian when it shows an angle of dip\[\theta \]at a place. The dip circle is rotated through an angle\[x\]in the vertical plane and then it shows an angle of dip\[\theta '\].Then\[\frac{\tan \theta '}{\tan \theta }\]is
question_answer20) Two masses of 10 kg and 20 kg respectively are tied together by a massless spring. A force of 200 N is applied on a 20 kg mass as shown in figure. At the instant shown the acceleration of 10 kg mass is\[12\text{ }m/{{s}^{2}},\] the acceleration of 20 kg mass is
question_answer21) Two closed organ pipes A and B have the same length, A is wider than B. They resonate in the fundamental made at frequencies\[{{n}_{A}}\]and\[{{n}_{B}}\]respectively
A)
\[{{n}_{A}}={{n}_{B}}\]
doneclear
B)
\[{{n}_{A}}>{{n}_{B}}\]
doneclear
C)
\[{{n}_{A}}<{{n}_{B}}\]
doneclear
D)
either or depending on the ratio of their diameters
question_answer23) Two waves each of frequency 540 Hz travel at a speed of 330 m/s. If the source are in phase, in the beginning, the phase difference of the waves at a point 4 m from one source and 4.4 m from the other is
question_answer24) An astronomical telescope has an eye-piece of focal length 5 cm. If the angular magnification in normal adjustment is 10, the distance between the objective and the eye-piece in cm is
question_answer25) A fuse wire with a circular cross-section and having diameter of 0.4 mm blows with a current of 3 A. The value of current for which another fuse wire made of the same material but having circular cross-section with diameter of 0.6 mm will blow is
question_answer26) In an AC circuit the power factor (1) is unity when the circuit contain's as ideal resistance only (2) is zero when the circuit contain's an ideal inductance only (3) is zero when the circuit contain's an ideal resistance only (4) is unity when the circuit contain's an ideal inductance only
question_answer27) The pair of physical quantities that have the same dimension is (are) (1) Reynold's number and coefficient of friction (2) Curie and frequency of a light wave (3) Latent heat and gravitational potential (4) Planck's constant and torque
question_answer28) A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that (1) its velocity is constant (2) its kinetic energy is constant (3) its acceleration is constant (4) its moves in a circular path
question_answer29) For an isolated system in the absence of any dissipative effect (1) KE is conserved (2) total energy is conserved (3) PE is conserved (4) mechanical energy is conserved
question_answer30) The charge flowing in a conductor varies with time as\[Q=at-b{{t}^{2}},\]then the current changes at the rate of\[(-2b)\] falls to zero after\[T=\left( \frac{a}{2b} \right)\] (3) reaches a maximum and then decreases (4) will remain constant
question_answer31) If an increasing temperature, the resistance decreases, then it is (1) superconductor (2) insulator (3) semiconductor (4) None of these
question_answer32) Velocity of sound in air is 320 m/s. A pipe closed at one end has a length of 1 m. Neglecting end corrections, the air column in the pipe can resonate for sound of frequency (1) 80 Hz (2) 240 Hz (3) 320 Hz (4) 800 Hz
question_answer33) During the melting of a slab of ice at 273 K at atmospheric pressure (1) pressure work is done by the ice-water system on the atmosphere (2) positive work is done on the ice-water system by the atmosphere (3) the internal energy of the ice-water system decreases (4) the internal energy of the ice-water increases
question_answer34) Which of the following from (5) a virtual and erect image for all positions of the object? (1) Convex lens (2) Concave lens (3) Concave mirror (4) Convex mirror
question_answer35) When a potential difference is applied across, the current passing through an insulator at 0 K is zero a semiconductor at 0 K is zero a p-n junction diode at 300 K is finite, if it reverse biased (4) a metal at 0 K is finite
question_answer36) A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric field due to the sphere at a distance r from its centre (1) increases as r increases for r < R (2) decreases as r increases for\[0<r<\infty \] (3) decreases as r increases for\[R<r<\infty \] (4) is discontinuous at\[r=R\]
question_answer37) A field line is shown in the figure. This field cannot represent (1) Magnetic field (2) Electrostatic field (3) Gravitational field (4) Induced electric field
question_answer38) \[{{C}_{V}}\]and\[{{C}_{P}}\]denote the molar specific heat capacities of a gas at constant volume and constant pressure, respectively. Then, (1)\[{{C}_{V}}-{{C}_{P}}\]larger for a diatomic ideal gas than for a monoatomic ideal gas (2)\[{{C}_{P}}+{{C}_{V}}\]is larger for a diatomic ideal gas than for a monoatomic ideal gas (3)\[\frac{{{C}_{P}}}{{{C}_{V}}}\]is larger for a diatomic ideal gas than for a monoatomic ideal gas (4)\[{{C}_{P}}.{{C}_{V}}\]is larger for a diatomic ideal gas than for a monoatomic ideal gas
question_answer39) A dielectric slab of thickness d is inserted in a parallel plate capacitor whose negative plate is at\[x=0\]and positive plate is at\[x=3d\]. The slab is equidistant from the plates. The capacitor is given some charge. As\[x\]goes from 0 to 3d the magnitude of the electric field remains the same (2) the directions of the electric field remains the same (3) the electric potential increases at first, then decreases and again increases (4) the electric potential increases continuously
question_answer40) A lead ball is dropped into a lake from diving board 5 m above the water. If hits the water with certain velocity and then sinks to the bottom with the same constant velocity. It reaches the bottom 5.0 after it is dropped. If\[g=10\text{ }m/{{s}^{2}}\] (1) the depth of lake in 40 m (2) the depth of lake in 50 m (3) the average velocity of ball is 9 m/s (4) the average velocity of ball is 5 m/s
question_answer41) A particle is projected from a point A with a velocity v at an angle of elevation\[\theta \]. At a certain point B, the particle moves at right angle to its initial direction. Then (1) velocity of particle at B is \[v\sin \theta \] (2) velocity of particle at B is \[v\cot \theta \] (3) velocity of particle at B is\[v\tan \theta \] (4) velocity of flight from A to B is\[\frac{v}{g\sin \theta }\]
question_answer43) A body of mass 2 kg moving with a speed of 3 m/s collides with a body of mass 1 kg moving with a speed of 4 m/s. If the collision is one dimensional and completely inelastic the speed of composite mass after the collision may be (1)\[\frac{3}{2}\]m/s (2) \[\frac{2}{3}\]m/s (3) 4 m/s (4)\[\frac{10}{3}\]m/s
question_answer44) In a cassette player materials used for coating magnetic tapes are (1) cobalt (2) \[NiF{{e}_{2}}{{O}_{4}}\] (3) nickel (4)\[CoF{{e}_{2}}{{O}_{4}}\]
question_answer45) A light of wavelength 6000 A in air enters a medium of refractive index 1.5. Inside the medium, its frequency is v and its wavelength is\[\lambda \] (1)\[v=5\times {{10}^{14}}Hz\] (2)\[v=7.5\times {{10}^{14}}Hz\] (3) \[\lambda =4000{\AA}\] (4) \[\lambda =9000{\AA}\]
question_answer46) Electric conduction takes place in a discharge tube due to movement of (1) positive ions (2) negative ions (3) electrons (4) photons
question_answer47) The impurity atoms with pure silicon should be doped to make a n-type semiconductor are those (1) phosphorus (2) antimany (3) boron (4) aluminium
question_answer48) In steady state (1) temperature does not change with time (2) there is no absorption of heat (3) there is no flow of heat (4) all parts of the body are at same temperature
question_answer49) Which of the following statements are correct about intensity of sound? (1) It depends only on amplitude of wave (2) It depends both an amplitude and frequency of wave (3) Its practical unit is phono (4) Its practical unit is decibal
question_answer57) A metal oxide has the formula\[{{A}_{2}}{{O}_{3}}\]. It can be reduced by hydrogen to give free metal and water. 0.1596 g of the metal oxide requires 6 mg of hydrogen for complete reduction. What is the atomic weight of metal?
question_answer60) A certain metal when irradiated by light \[(v=3.2\times {{10}^{16}}Hz)\]emits photoelectrons with twice kinetic energy as did photoelectrons when the same metal is irradiated by light\[(v=2.0\times {{10}^{16}}Hz)\]. Then\[{{v}_{0}}\]of metal is
question_answer63) 4.5 g of aluminium is deposited at cathode from\[A{{l}^{3+}}\]solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from\[{{H}^{+}}\]ions in solution by the same quantity of electric charge will be
question_answer72) The ionization constant of a weak electrolyte is\[25\times {{10}^{-6}}\] while the equivalent conductance of its 0.01 M solution is\[19.6\text{ }S\text{ }c{{m}^{2}}e{{q}^{-1}}\]. The equivalent conductance of the electrolyte at infinite dilution (in\[S\text{ }c{{m}^{2}}e{{q}^{-1}}\]) will be
question_answer73) If a is the initial concentration and k is the rate constant of a zero order reaction, the time for the reaction to go to completion will be
question_answer76) Which kinds of isomerism is exhibited by octahedral\[Co(N{{H}_{3}})B{{r}_{2}}Cl\]? (1) Optical (2) Geometrical (3) Linkage (4) lonisation
question_answer77) Which species has one lone pair of electrons on the central atom? (1) \[[ClO_{3}^{-}]\] (2) \[Xe{{F}_{4}}\] (3) \[S{{F}_{4}}\] (4) \[[I_{3}^{-}]\]
question_answer79) Which of the following are oxidised by\[{{O}_{3}}\]? (1)\[KI\] (2) \[FeS{{O}_{4}}\] (3) \[{{K}_{2}}Mn{{O}_{4}}\] (4) \[KMn{{O}_{4}}\]
question_answer80) Which of the following compounds are expected to show similar colour in aqueous medium? (1)\[FeC{{l}_{2}}\] (2) \[VOC{{l}_{2}}\] (3) \[MnC{{l}_{2}}\] (4) \[CuC{{l}_{2}}\]
question_answer81) Which of the following represents 32g of the substance? (1) 1 g atom of sulphur (2) 22.4 L of\[{{O}_{2}}\]gas at STP (3) One mole of oxygen atoms (4) One mole of sulphur molecules
question_answer83) Which of the following statements are correct for an electron that has n = 4 and\[m=-2\]? (1) The electron may be in a d-orbital (2) The electron is in the fourth principal electronic shell (3) The electron may be in a p-orbital (4) The electron must have the spin quantum number \[=+\frac{1}{2}\]
question_answer85) Among the following chain transfer reagents are (1) carbon tetrachloride (2) carbon tetrabromide (3) benzoyl peroxide (4) benzoquinone
question_answer87) Benzene and aniline can be separated from their mixture by (1) distillation (2) vacuum distillation (3) dil.\[HCl\] (4) dil.\[NaOH\]
question_answer89) In which of the following compounds the\[\pi -\]electron cloud contains the same number of electrons (1) naphthalene (2) anthracene (3) biphenylene (4) phenanthrene
question_answer91) The enthalpy change for the process\[C(graphite)\xrightarrow{{}}C(g)\]is called (1) heat of vaporisation (2) heat of sublimation (3) heat of atomization (4) heat of allotropic change
question_answer93) Which of the following will give yellow precipitate with\[{{I}_{3}}/NaOH\]? (1)\[IC{{H}_{2}}COC{{H}_{2}}C{{H}_{3}}\] (2)\[C{{H}_{3}}COOCOC{{H}_{3}}\] (3)\[C{{H}_{3}}CH(OH)C{{H}_{2}}C{{H}_{3}}\] (4)\[C{{H}_{3}}COOH\]
question_answer95) Which of the following statements are incorrect? (1) Nuclear isomers contain the same number of protons and neutrons (2) One curie\[=3.7\times {{10}^{10}}\]disintegrations/per minute (3) The decay constant is independent of the amount of the susbtance taken (4) Actinium series starts with U-238
question_answer96) The rate of law for the reaction\[RCl+NaOH\xrightarrow{{}}ROH+NaCl\]is given by rate\[=k[RCl]\]. The rate of this reaction (1) is doubled by doubling the concentration of\[NaOH\] (2) is halved by reducing the concentration of \[RCl\]by one half (3) is unaffected by change in temperature (4) is increased by increasing the temperature of the reaction
question_answer98) When\[C{{l}_{2}}\]is passed through hot\[NaOH,\] oxidation number of\[Cl\]changes from (1) 0 to + 5 (2) -1 to 0 (3) 0 to -1 (4) 0 to + 7
question_answer99) Which of the following will have nearly equal \[{{H}^{+}}\]concentration? (1)\[100\text{ }mL\text{ }0.1\text{ }M\text{ }HCl\]mixed with 50 mL water (2)\[50\text{ }mL\text{ }0.1\text{ }M\text{ }{{H}_{2}}S{{O}_{4}}\]mixed with 100 mL water (3) \[50\text{ }mL\text{ }0.1\text{ }M\text{ }{{H}_{2}}S{{O}_{4}}\]mixed with 50 mL water (4)\[50\text{ }mL\text{ }0.1\text{ }M\text{ }HCl\]mixed with 50 mL water
question_answer100) Which of the following represent van?t Hoff equation? (1) \[K=A{{e}^{-{{E}_{a}}/RT}}\] (2) \[K=A{{e}^{-\Delta H/RT}}\] (3) \[d(In\,K)/dT=-\Delta H/R{{T}^{2}}\] (4) \[d(In\,K)/dT=\Delta H/R{{T}^{2}}\]
question_answer114) If a boy's father has haemophilia and his mother has one gene for haemophilia, what is the chance that the boy will inherit the disease?
question_answer126) The correct statement about Reptilia is (1) their RBCs are nucleated (2) fertilization is internal (3) they are poikilorherms (4) metamorphosis is present
question_answer127) Histology is (1) the study of tissues (2) the word coined by Mayer (3) related to ion balance of body (4) not related to plant tissues
question_answer128) Arteries (1) are thick walled vessels (2) carry CO2 throughout the body (3) carry blood at high pressure (4) are collapsable vessels
question_answer129) Brain is (1) protected by meninges (2) enveloped by cranium (3) divided into forebrain, mid brain and hind brain (4) part of peripheral nervous system
question_answer130) Relaxin is (1) an enzyme (2) a hormone secreted during pregnancy (3) secreted by corpus luteum (4) broadens die uterus cervix for easy birth of child
question_answer131) Which of the following pairs is correctly matched? (1) Pivot joint ? Radius and ulna (2) Saddle joint ? Wrist bone (3) Hinge joint ? Knee joint (4) Gliding joint ? Atlas and axis
question_answer132) What is true about lymphokines? (1) They are chemical messengers (2) They are released by helper T-lymphocytes (3) High levels of cholesterol (4) Types of blood coagulants
question_answer135) Which of the following pairs is/are correctly matched? (1) Cholecystokinin?Activates gall bladder to release bile (2) Secretm ? Controls Secretion of pancreatic enzymes (3) Placenta ? Also acts as an endocrine gland (4) Thyroxine ? Low serum and high serum phosphate
question_answer137) Functions of bile in humans are to (1) neuralises the acid produced by the stomach (2) maintains fats in an emulsified state (3) helps in storage of vitamin-A and D (4) digests cellulose
question_answer144) Which is related to pectoral girdle? (1) It is V-shaped (2) Its half is Os in nominatum (3) It is not fused to the sternum (4) A glenoid cavity fits the head to humerus bone
question_answer146) Which one is a true statement about haemophilia? (1) Caused by X-linked recessive gene (2) Caused by abnormal type of haemoglobin (3) It is hereditary bleeding disorder (4) Characterized by absence of melanin
question_answer147) Symptoms of ageing in humans can be studied at which of these following levels? (1) At cellular level (2) At or ganismic level (3) At extracellular level (4) Ac ecosystem level
question_answer176) Which of the following statements are correct? (1) Rate of water absorption increases with gradual increase in the osmotic pressure of the cell sap of root hairs (2) Passive absorption of water in readily facilitated by transpiration (3) KCN is a respiratory inhibitor (4) Indole acetic acid induces the rate of water absorption
question_answer178) Factor which affect translocation of solutes is/are (1) presence of carbon dioxide (2) oxygen (3) dryness (4) temperature between 25°C-35°C
question_answer179) Select the true statements (1) Aldrovanda is a rootless, free floating insectivorous aquatic plant (2) Sarracenia is a pitcher like plant (3) Rafflesia is a total stem parasite (4) Striga is a parasite of khuskhus
question_answer183) Messenger RNA (mRNA) (1) forms 5-10% of total cellular RNA (2) transcribes genetic information coded in DNA molecule (3) is synthesized on DNA template (4)is also called adaptive RNA
question_answer184) Facilitated diffusion (1) occurs from higher concentration to lower concentration (2) takes place along the concentration gradient (3) form carrier-transport complex (4) is stereospecific
question_answer185) Plasmodesmata (1) also called tight junctions (2) increase area of absorption (3) are barriers for diffusion (4) five finger like folding
question_answer186) \[{{\text{C}}_{\text{3}}}\text{-}\]plants have (1) Calvin cycle (2) Kranz type of anatomy (3) Photorespiration (4) No photorespiration
question_answer187) High concentration of \[C{{O}_{2}}\] (1) is not favourable for respiration in plants (2) inhibits all those activities of the plant which require energy (3) is important for aerobic respiration (4) is available in soil
question_answer188) Lichens (1) are indicators of pollution (2) are also used in cosmetics (3) play important role in formation of soil (4) are algal and bacterial partners
question_answer189) Transpiration is a (1) physical process in which water changes from liquid to gaseous form (2) vital physiological process (3) slow loss of water molecules from the surface (4) pressure which act on guard cells
question_answer190) Auxins (1) accelerate roorings (2) help in storage by increasing the period of dormancy (3) control fruit growth (4) shorten stem growth
question_answer193) Which one is a correct match about leaf modification? (1)Fleshy leaves ?Aloe, Agave, Sedum (2) Bladder ? Utricularia stellaris (3) Phyllode ?Acacia, Parkinsonia (4) Leaf spine ? Cucurbica
question_answer195) Phloem contains (1) dead matter in it known as bast (2) long and narrow sclerenchymatous fibres (3) companion cells, which are living, thin-walled, narrow. (4) cells which are long and tubular with lignified cell wall
question_answer199) Cytokmins (1) help in cell enlargement (2) counteract the influence of pical dominance over the lateral buds (3) help in germination of cereal seeds (4) helps in initiation of flowering
question_answer200) Which of these statements is related to partial root parasite? (1) Santalum (sandal wood tree) develops haustoria and enter the roots of neighbouring trees of Dalbergia sissoo (2) Thesium grows on grasses (3) Viscum grows on oak (4) Loranthus is a parasite on mango