question_answer5) A current of 1.6 A is passed through a solution of\[CuS{{O}_{4}}.\] How many\[C{{u}^{++}}\]ions are liberated in one minute? (Electronic charge\[=1.6\times {{10}^{-19}}C\])
question_answer6) A soap bubble of radius r is blown up to form a bubble of radius 2r under isothermal conditions. If T is the surface tension of soap solution, the energy spent in the blowing
question_answer7) If the ratio of lengths, radii and Youngs modulus of steel and brass wires shown in the figure are a, b and c respectively, the ratio between the increase in lengths of brass and steel wires would be:
question_answer9) A hollow sphere of volume V is floating on water surface with half immersed in it. What should be the minimum volume of water poured inside the sphere so that the sphere now sinks into the water
question_answer10) When a ceiling fan is switched on, it makes 10 revolution in the first 3s. Assuming a uniform angular acceleration, how many rotation it will make in the next 3s
question_answer11) The potential energy of a body is given by \[U=A-B{{x}^{2}}\] (where x is the displacement.) The magnitude of force acting on the particle is
question_answer12) A stone weighing 1 kg and sliding on ice with a velocity of 2 m/s is stopped by friction in 10 s. The force of friction (assuming it to be constant) will be
question_answer13) The engine of a jet aircraft applies a thrown force of 105 N during take-off and causes the plane to attain a velocity of 1 km/s in 10s. The mass of the plane is
question_answer14) A coin is dropped in a lift. It takes time \[{{t}_{1}}\] to reach the floor when lift is stationary. It takes time \[{{t}_{2}}\] when lift is moving up with constant acceleration. Then,
question_answer15) A boy on a cycle pedals around a circle of 20 metres radius at a speed of 20 m/s. The angle, combined mass of the body and the cycle makes with the vertical so that it may not fall, is (g = 9.8 \[m\text{/}{{s}^{2}}\])
question_answer17) A wheel of radius 0.4 m can rotate freely about its axis as shown in the figure. A string is wrapped over its rim and a mass of 4 kg is hung. An angular acceleration of 8 \[\text{rad-}{{\text{s}}^{-2}}\]s is produced in it due to the torque. Then, moment of inertia of the wheel is \[\text{(g}\,\text{=}\,\text{m}{{\text{s}}^{-2}})\]
question_answer18) A body of mass \[{{m}_{1}}=\]4 kg moves at \[5\,i\,m\text{/}s\] and another body of mass \[{{m}_{2}}=2\,kg\] moves at \[10\,i\,\,m\text{/}s.\] The kinetic energy of centre of mass is
question_answer19) \[y=3\,\sin \pi \left( \frac{t}{2}-\frac{x}{4} \right)\] represents an equation of a progressive wave, where\[t\]is in second and \[x\] is in metre. The distance travelled by the wave in 5 s is
question_answer20) A parallel plate capacitor with air as the dielectric has capacitance C. A slab of dielectric constant K and having the same thickness as the separation between the plates is introduced so as to fill one-fourth of the capacitor as shown in the figure. The new capacitance will be
question_answer21) In Youngs double slit experiment with sodium vapour lamp of wavelength 589 nm and the slits 0.589 mm apart, the half angular width of the central maximum is
question_answer22) An electric bulb has a rated power of 50 W at 100 V. If it is used on an AC source 200 V, 50 Hz, a choke has to be used in series with it. This choke should have an inductance of
question_answer23) A shell of mass 20 kg at rest explodes into two fragments whose masses are in the ratio 2:3. The smaller fragment moves with a velocity of 6 m/s. The kinetic energy of the larger fragment is
question_answer24) A vessel of height 2d is half filled with a liquid of refractive index\[\sqrt{2}\]and the other half with a liquid of refractive index n (the given liquids are immiscible). Then, the apparent depth of the inner surface of the bottom of the vessel (neglecting the thickness of the bottom of the vessel) will be
question_answer25) Which one of the following graph represents the variation of maximum kinetic energy \[({{E}_{k}})\]of the emitted electrons with frequency v in photoelectric effect correctly?
question_answer26) The cylindrical tube of a spray pump has a cross-section of 8\[c{{m}^{2}},\], one end of which has 40 fine holes each of area\[{{10}^{-8}}{{m}^{2}}.\] If the liquid flows inside the tube with a speed of 0.15 m\[{{\min }^{-1}},\] the speed with which the liquid is ejected through the holes is
question_answer27) A launching vehicle carrying an artificial satellite of mass m is set for launch on the surface of the earth of mass M and radius R. If the satellite is intended to move in a circular orbit of radius 7R, the minimum energy required to be spent by the launching vehicle on the satellite is (Gravitational constant = G)
question_answer28) The thermo emf of a hypothetical thermocouple varies with the temperature \[\theta \] of hot junction as\[E=a\theta +b{{\theta }^{2}}\]in volts, where the ratio \[\frac{a}{b}\] is\[700{}^\circ C\]. If the cold junction is kept at\[0{}^\circ C\], then the neutral temperature is
A)
\[700{}^\circ C\]
doneclear
B)
\[1400{}^\circ C\]
doneclear
C)
\[390{}^\circ C\]
doneclear
D)
no neutral temperature is possible for this thermocouple Not Available Option
question_answer30) A police party is moving in a jeep at a constant speed v. They saw a thief at a distance x on a motorcycle which is at rest. The moment the police saw the thief, the thief started at constant acceleration a. Which of the following relations is true if the police is able to catch the thief?
question_answer31) A certain vector in the xy-plane has an x-component of 4 m and a y-component of 10 m. It is then rotated in the xy-plane so that its x-component is doubled. Then, its new y-component is (approximately)
question_answer32) A coil of n number of turns is wound tightly the form of a spiral with inner and outer radii a and b respectively. When a current of strength I is passed through the coil, the magnetic field at its centre is
question_answer33) Horizontal tube of non-uniform cross-seed. has radii of 0.1 m and 0.05 m respectively at M and N. For a streamline How of liquid, the rate of liquid flow is
question_answer36) 0.1 \[{{m}^{3}}\] of water at \[80{}^\circ C\] is mixed with \[{{m}^{3}}\] of water at\[60{}^\circ C\]. The final temperature of the mixture is
question_answer37) Two rectangular blocks A and B of masses 2 kg and 3 kg respectively are connected by a spring of spring constant \[10.8\,N{{m}^{-1}}\] and are placed on a functionless horizontal surface. The block A was given an initial velocity of \[0.15\,m{{s}^{-1}}\]in the direction shown in the figure. The maximum compression of the spring during the motion is
question_answer39) The surface temperature of the sun which has maximum energy emission at 500 nm is 6000 K The temperature of a star which has maximum energy emission at 400 nm will be
question_answer40) An engine moving towards a wall with a velocity 50 m/s emits a note of 1.2 kHz. Speed of sound in air is 350 m/s. The frequency of the note after reflection from the wall as heard by the driver of the engine is
question_answer54) The ratio of the difference in energy between the first and the second Bohr orbit to that between the second and the third Bohr orbit is
question_answer64) Consider the following reaction, \[{{C}_{6}}{{H}_{5}}N{{O}_{2}}\xrightarrow{Sn/HCl}X\xrightarrow{{{C}_{6}}{{H}_{5}}COCl}Y+HCl\] What is V?
question_answer71) For the reaction, \[N{{H}_{3}}+OC{{l}^{-}}\xrightarrow{{}}{{N}_{2}}{{H}_{4}}+C{{l}^{-}}\] occurring in basic medium, the coefficient of \[{{N}_{2}}{{H}_{4}}\] in the balanced equation will be
question_answer75) Ammonia is a Lewis base and it forms complexes with many cations. Which one of the following cations does not form a complex with ammonia?
question_answer161) Directions: Out of the four alternatives, choose the one which expresses the correct meaning of the given word and mark the appropriate answer in the Answer Sheet. Irreproachable
question_answer162) Directions: Out of the four alternatives, choose the one which expresses the correct meaning of the given word and mark the appropriate answer in the Answer Sheet. Felicity
question_answer163) Directions: Out of the four alternatives, choose the one which expresses the correct meaning of the given word and mark the appropriate answer in the Answer Sheet. Knave
question_answer164) Directions: Out of the four alternatives, choose the one which expresses the correct meaning of the given word and mark the appropriate answer in the Answer Sheet. Frontier
question_answer165) Directions: Out of the four alternatives, choose the one which expresses the correct meaning of the given word and mark the appropriate answer in the Answer Sheet. Rout
question_answer169) Directions: In these questions, four words are given in each question, out of which only one word is wrongly spelt. Find the word and indicate it in Answer Sheet. In these questions, four words are given in each question, out of which only one word is wrongly spelt. Find the word and indicate it in Answer Sheet.
question_answer170) Directions: In these questions, four words are given in each question, out of which only one word is wrongly spelt. Find the word and indicate it in Answer Sheet. In these questions, four words are given in each question, out of which only one word is wrongly spelt. Find the word and indicate it in Answer Sheet.
question_answer171) Directions: In these questions, four words are given in each question, out of which only one word is wrongly spelt. Find the word and indicate it in Answer Sheet. In these questions, four words are given in each question, out of which only one word is wrongly spelt. Find the word and indicate it in Answer Sheet.
question_answer172) Directions: In these questions, four words are given in each question, out of which only one word is wrongly spelt. Find the word and indicate it in Answer Sheet. In these questions, four words are given in each question, out of which only one word is wrongly spelt. Find the word and indicate it in Answer Sheet.
question_answer173) Directions: Four alternatives are given for the bold words of given idiom/phrase. Choose the alternative which best expresses the meaning of the bold words of given idiom/phrase and mark the appropriate answer in the Answer Sheet. His parents cut him off, without a shilling
question_answer174) Directions: Four alternatives are given for the bold words of given idiom/phrase. Choose the alternative which best expresses the meaning of the bold words of given idiom/phrase and mark the appropriate answer in the Answer Sheet. The carefully worked-out plan fell through because of an unexpected event
question_answer175) Directions: Four alternatives are given for the bold words of given idiom/phrase. Choose the alternative which best expresses the meaning of the bold words of given idiom/phrase and mark the appropriate answer in the Answer Sheet. He has too many irons in the fire
A)
is engaged in too many enterprises at the same time
question_answer176) Directions: Four alternatives are given for the bold words of given idiom/phrase. Choose the alternative which best expresses the meaning of the bold words of given idiom/phrase and mark the appropriate answer in the Answer Sheet. We wanted to give Rita a surprise party but John let the cat out of the bag
question_answer177) Directions: Out of the four alternatives, choose the one which can be substituted for given words/sentence and mark the appropriate option in the Answer Sheet. Study of insects is
question_answer178) Directions: Out of the four alternatives, choose the one which can be substituted for given words/sentence and mark the appropriate option in the Answer Sheet. Careful in the spending of money, time etc.
question_answer179) Directions: Out of the four alternatives, choose the one which can be substituted for given words/sentence and mark the appropriate option in the Answer Sheet. Reproducing or memorizing word for word
question_answer180) Directions: Out of the four alternatives, choose the one which can be substituted for given words/sentence and mark the appropriate option in the Answer Sheet. That which cannot be captured
question_answer181) Directions: Out of the four alternatives, choose the one which can be substituted for given words/sentence and mark the appropriate option in the Answer Sheet. One who breaks the law
question_answer182) Directions: A part of the sentence is given in bold. Below are given alternatives to the bold part at (a), (b) and (c). Which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (d). Mark the appropriate option in the Answer Sheet. The way to solve the racial problem is by
question_answer183) Directions: A part of the sentence is given in bold. Below are given alternatives to the bold part at (a), (b) and (c). Which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (d). Mark the appropriate option in the Answer Sheet. He may be poor now but he appears to be rich.
question_answer184) Directions: A part of the sentence is given in bold. Below are given alternatives to the bold part at (a), (b) and (c). Which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (d). Mark the appropriate option in the Answer Sheet. The suspected couple was taken away from the airport through a side entrance to the police station for interrogation.
question_answer185) Directions: A part of the sentence is given in bold. Below are given alternatives to the bold part at (a), (b) and (c). Which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (d). Mark the appropriate option in the Answer Sheet. She left the room feeling contrite.
question_answer187) 1. But at the moment I glanced round at the crowd that had followed me.
P. It was immense crowd, two thousand at the least and growing every minute.
Q. They were watching me as they would watch a conjurer about to perform a trick.
R. I looked at the sea of yellow faces above the garish clothes-faces all happy and excited over this bit of fun, all certain that the elephant was going to be shot.
S. It blocked the road for a long distance on either side.
6. They did not like me, but with the magical rifle in my hands, I was momentarily worth watching.