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Physics
Question-1 A planar loop of wire rotates in a uniform magnetic field. Initially, at t = 0 the plane of the loop is perpendicular to the magnetic field. If it rotates with a period of 10 s about an axis in its plane then the magnitude of induced emf will be maximum and minimum, respectively at:
A) 2.5s and 7.5s
B) 2.5s and 5.0s
C) 5.0s and 7.5s
D) 5.0s and 10.0s
Answer: B) 2.5s and 5.0s
Question-2 The time period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time period will become
A) 10 hrs
B) 80 hrs
C) 40 hrs
D) 20 hrs
Answer: C) 40 hrs
Question-3 An iceberg is floating in the water. The density of ice in the iceberg is 917 kgm-3 and the density of water is 1024 kgm-3 , the percentage volume of iceberg visible outside water is close to:
A) 5%
B) 10%
C) 12%
D) 8%
Answer: B) 10%
Question-4 In Young’s double slit experiment, the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width is
A) unchanged
B) halved
C) doubled
D) quadrupled
Answer: D) quadrupled
Question-5 In a single slit diffraction experiment, the width of the slit is made double its original width. Then the central maximum of the diffraction pattern will become
A) Narrower and fainter
B) Narrower and brighter
C) Broader and fainter
D) Broader and brighter
Answer: B) Narrower and brighter
Question-6 For the series circuit shown in the figure, the voltmeter reading will be: (All the meters are ideal.)
A) 300 V
B) 200 V
C) 100 V
D) 600 V
Answer: B) 200 V
Question-7 In an adiabatic process on a gas with \gamma = 1.4, the pressure is increased by 0.5%. The volume decreases by about
A) 0.36%
B) 0.5%
C) 0.7%
D) 1%
Answer: A) 0.36%
Question-8 A pendulum of mass m is pulled from position A by applying a constant horizontal force F = mg/3. Velocity at point B shown in figure
A)
\sqrt{\frac{2lg}3}B)
\sqrt{\frac{3lg}3}C)
\sqrt{\frac{3lg}5}D) Zero
Answer: D) Zero
Question-9 A string of negligible thickness is wrapped several times around a solid cylinder, which is kept on a rough inclined plane. A man exerts a force F through the string as shown in the figure and slowly rolls in the cylinder up through a vertical height h. The work done by the man is
A) Fh/2
B) Fh
C) 2Fh
D) 4Fh
Answer: D) 4Fh
Question-10 When a person throws a meter sticki it is found that the centre of the stick is moving with a speed of 10 m/s and left end of stick, with a speed of 20 m/s. Both points move vertically upwards at that moment. Then angular speed of the stick is
A) 20 rad/s
B) 10 rad/s
C) 30 rad/s
D) None of these
Answer: A) 20 rad/s
Question-11 A particle of mass m is moving with velocity v1, it is given an impulse such that the velocity becomes v2. Then magnitude of impulse is equal to
A)
m\left|{\overrightarrow v}_2-{\overrightarrow v}_1\right|B)
m\left({\overrightarrow v}_1-{\overrightarrow v}_2\right)C)
0.5m\left({\overrightarrow v}_1-{\overrightarrow v}_2\right)D)
0.5m\left({\overrightarrow v}_2-{\overrightarrow v}_1\right)Answer: A)
Question-12 Which of the following pairs of space and time-varying E and B fields would generate a plane electromagnetic wave travelling in the (—z) direction?
A)
E_x,\;B_yB)
E_y,\;B_xC)
E_x,\;B_yzD)
E_y,\;B_zxAnswer: B)
Question-13 A cubical block of side L and mass m is placed on a horizontal floor. In the arrangement, as shown, force F is applied at the end of the plane sheet PQ, which is firmly attached with the block. What should be the minimum value of PQ so that the block may be tipped about an edge?
A)
\frac L{\sqrt3}B)
L\sqrt2C)
\frac{L\sqrt2}3D)
\frac{L\sqrt3}{\sqrt2}Answer: A)
Question-14 The refractive indices of the crown glass for violet and red lights are 1.51 and 1.49 respectively and those of the flint glass are 1.77 and 1.73 respectively. A prism of angle 60 is made of crown glass. A beam of white light is incident at a small angle on this prism. The other thin flint glass prism is combined with the crown glass prism such that net mean deviation is 1.50 anticlockwise.
A screen is placed normal to the emerging beam at a distance of 2 m from the prism combination. Find the distance between red and violet spot on the screen. Which is the topmost colour on screen.
A)
\frac{4\pi}9B)
\frac{3\pi}2C)
-\frac\pi2D)
-\frac{3\pi}6Answer: A)
Question-15 Find the speed of a conical pendulum, in its circular path if its length is 1 m and it makes an angle \theta = 45º w.r.t z-axis and moves in a circle in the xy plane. The radius of the circle is 0.4m and its centre is vertically below O. (g = 10m/s2)
A) 0.2 m/s
B) 0.4 m/s
C) 2 m/s
D) 4 m/s
Answer: C) 2 m/s
Question-16 The fundamental frequency in the rectifier wave when a “full wave rectifier” circuit operates at 50 Hz mains frequency, is
A) 100 Hz
B) 70.7 Hz
C) 50 Hz
D) 25 Hz
Answer: A) 100 Hz
Question-17 A solid metal cube of edge length 2 cm is moving in the positive y-direction, at a constant speed of 6 m/s. There is a uniform magnetic field of 0 .1 T in the positive z-direction. The potential difference between the two faces of the cube, perpendicular to the x-axis, is
A) 12 mV
B) 1 mV
C) 2 mV
D) 6 mV
Answer: A) 12 mV
Question-18 A bob of mass m attached to an inextensible string of length l is suspended from a vertical support. The bob rotates in a horizontal circle with an angular speed w rad/s about the vertical. About the point of suspension :
A) Angular momentum is conserved
B) Angular momentum changes in magnitude but not in direction
C) Angular momentum changes in direction but not in magnitude
D) Angular momentum changes both in direction and magnitude
Answer: C) Angular momentum changes in direction but not in magnitude
Question-19 A point mass oscillates along the x-axis according to the law x=x_0\cos\left(\omega t-\frac\pi4\right). If the acceleration of the particle is written as a=A\cos\left(\omega t+\delta\right), then
A)
A=x_0,\;\delta=-\frac\pi4B)
A=x_0\omega^2,\;\delta=\frac\pi4C)
A=x_0\omega^2,\;\delta=-\frac\pi4D)
A=x_0\omega^2,\;\delta=\frac{3\pi}4Answer: D)
Question-20 When a soap bubble is charged, its size
A) increases.
B) decreases.
C) remains the same.
D) increases if it is given positive charge and decreases if it is given negative charge.
Answer: A) increases.
Question-21 A coil of radius 1 cm and number of turns 100 is placed in the middle of a long solenoid of radius 5 cm and having 5 turns per cm. The mutual induction in millihenry will be
A) 0.0316
B) 0.063
C) 0.105
D) 0
Answer: A) 0.0316
Question-22 A tunnel is made across the earth of radius R, passing through its centre. A ball is dropped from a height h in the tunnel. The motion will be periodic with time period.
A)
2\pi\sqrt{\frac Rg}+4\sqrt{\frac hg}B)
2\pi\sqrt{\frac Rg}+4\sqrt{\frac{2h}g}C)
2\pi\sqrt{\frac Rg}+\sqrt{\frac hg}D)
2\pi\sqrt{\frac Rg}+\sqrt{\frac{2h}g}Answer: B)
Question-23 An unknown body is measured with a meter scale of unequal length, if the mass appears 10 g and 11 g when it is kept on both the pans respectively. The true mass is
A) 10.48 g
B) 10.00 g
C) 11.00 g
D) 10.50 g
Answer: A) 10.48 g
Question-24 Light of wavelength 500 nm is incident on a metal with work function 2.28 e V. The de Broglie wavelength of the emitted electron is:
A)
Less\;than\;2.8\times10^{-9}mB)
\geq2.8\times10^{-9}mC)
\leq2.8\times10^{-12}mD)
\;Less\;than\;2.8\times10^{-10}mAnswer: B)
Question-25 The figure shows a rod of length I with points A and B on it. The rod is moved in a uniform magnetic field (Bo) in different ways as shown. In which case, the potential difference (VA — VB) between A and B is minimum?
A) 
B) 
C) 
D) 
Answer: A)
Question-26 Using the following, data, calculate at what temperature will the wood just sink in benzene
Density of wood at 0°C = 8.8 × 102 kg/m3
Density of benzene at 0°C = 9 × 102 kg/m3
Cubical expansivity of wood = 1.5 × 10-4 per kg
Cubical expansivity of benzene = 1.2 × 10-3 per kg
A)
27^oCB)
21.7^oCC)
31^oCD)
31.7^oCAnswer: B)
Question-27 What will be its time period (in earth’s days) if a new planet is discovered rotating around the sun with an orbital radius double that of the earth?
A) 1032
B) 1023
C) 1024
D) 1043
Answer: A) 1032
Question-28 Moment of inertia of an equilateral triangular lamina ABC, about the axis passing through its centre O and perpendicular to its plane is I0 as shown in the figure. A cavity DEF is cut out from the lamina, where D, E, F are the mid points of the sides. Moment of inertia of the remaining part of lamina about the same axis is:
A)
\frac{7I_0}8B)
\frac{15I_0}{16}C)
\frac{3I_0}4D)
\frac{31I_0}{32}Answer: B)
Question-29 Three point particles of masses 1.0 kg, 1.5 kg and 2.5 kg are placed at three corners of a right angle triangle of sides 4.0 cm, 3.0 cm and 5.0 cm as shown in the figure. The centre of mass of the system is at a point:
A) 0.6 cm right and 2.0 cm above 1 kg mass.
B) 1.5 cm right and 1.2 cm above 1 kg mass.
C) 2.0 cm right and 0.9 cm above 1 kg mass.
D) 0.9 cm right and 2.0 cm above 1 kg mass.
Answer: D) 0.9 cm right and 2.0 cm above 1 kg mass.
Question-30 A 20 H inductor coil is connected to a 10 Q in series as shown in figure The time at which rate of dissipation of energy (Joul’s heat) across resistance is equal to the rate at which magnetic energy is stored in the inductor, is:
A)
\frac12\ln2B)
2\ln2C)
\frac2{\ln2}D)
\ln2Answer: B)
Question-31 A body 6 m north, 8 m east and 10 m vertically upwards. what is its resultant displacernent initial position?
A)
10\sqrt2\;mB)
10\;mC)
\frac{10}{\sqrt2}\;mD)
20\;mAnswer: A)
Question-32 Two identical solid spheres of sarne material and radius R placed in contact with each the gravitational attraction them is proportional to –
A)
R^2B)
R^{-2}C)
R^4D)
R^{-4}Answer: C)
Question-33 negatively and uniformly charged nonconducting disc as shown is rotated clækwise direction of the magnetic field at point A in the plane of thre disc is –
A) Into the page
B) Out of the FX’ge
C) Up to the page
D) Down the page
Answer: A) Into the page
Question-34 The core of a transformer is laminated so that:
A) The ratio of the voltage in secondary to that in the primary may increased
B) The energy loses due to eddy currents minimized
C) The weight of the transforrner rrray reduced
D) The rusting of the core rnay prevented
Answer: B) The energy loses due to eddy currents minimized
Question-35 The wrface tension of a liquid is 5 N/m. If a film is held on a ring of area 0.02 m2 , its total surface energy is about –
A)
5\times10^{-2}JB)
2.5\times10^{-2}JC )
2\times10^{-1}JD)
3\times10^{-1}JAnswer: C)
Question-36 A photocell is illuminated by a small bright source placed 1 m away. When the same source of light is placed 2 m away, the number of emitted by photo are by a factor of
A) 1/8
B) 1/16
C) 1/2
D) 1/4
Answer: D) 1/4
Question-37 The of an X—ray photon is 2 keV. Then the frequency (in per s) is
A)
3.2\times10^6B)
5\times10^17C)
2\times10^17D)
2\times10^18Answer: B)
Question-38 A particle of rnass m = 9 x 10-31 kg moving towards the wall of a vessel at a of v = 600 m/s strikes it at an angle of \theta = 60º to the normal and rebourxis it at the sarne angle at the same speed. The impulse of the force experienced by the wall during the impact is
A)
3\times10^{21}NsB)
9\times10^{-28}NsC)
5.4\times10^{-28}NsD)
9\times10^{-27}NsAnswer: C)
Question-39 The used in the circuit shown in the figure has a constant voltage drop of O. 5 V at all currents and a maximum power rating of 100 mW.
What should the value of the resistance R, connected in series with the diode, for obtaining maximum current?
A)
1.5\OmegaB)
5\OmegaC)
6.67\OmegaD)
200\OmegaAnswer: B)
Question-40 Find out the increase in of inertia I of a uniform rod(coeffcient of linear expansion \alpha) about its perpendicular bisector when its is slightly by \triangleT.
A)
2I\alpha\triangle TB)
4I\alpha\triangle TC)
3I\alpha\triangle TD)
I\alpha\triangle TAnswer: A)
Question-41 Assertion: : Ternperature of body can be rised without heating.
Reason: As the heat is continuously generated by electric heater, of heater rises continuously.
A) If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B) If both Assertion and Reason are true but Reason is rot explanation of the Assertion.
C) If Assertion is true but the Reason is false.
D) If Assertion is false but Reason is true.
Answer: C) If Assertion is true but the Reason is false.
Question-42 A block of mass 1 kg is placed on truck which accelerates with acceleration 5 m/s2. The coeffdent of static friction between the and truck is 0.6. The frictional force acting on the block is
A) 5.88 N
B) 6 N
C) 5 N
D) 4.6 N
Answer: C) 5 N
Question-43 According to Newton, the viscous force acting between liquid layers of area A and velocity \frac{\triangle v}{\triangle z} is given by F=-\eta A\frac{\triangle v}{\triangle z}, where \eta is constant called coeffcient of viscosity. The dimensional formula of \eta is:
A)
\left[ML^{-2}T^{-2}\right]B)
\left[M^0L^0T^0\right]C)
\left[ML^2T^{-2}\right]D)
\left[ML^{-1}T^{-1}\right]Answer: D)
Question-44 Find the steady-state current through Ll in the figure, a long tirne after the switch S is closed.
A)
\frac{V_0}RB)
\frac{V_0L_1}{R\left(L_1+L_2\right)}C)
\frac{V_0L_2}{R\left(L_1+L_2\right)}D) None
Answer: C)
Question-45 A block of 10 kg slides down a rough slope which is inclined at 45º to the horizontal. The coefficient of sliding friction is 0.30. When the block has slide 5 m, the work done on the by the force of friction is nearly
A) 115 J
B)
75\sqrt2C) 321.4 J
D) -321.4 J
Answer: B)
Question-46 The pendulum bob has a speed of 3 m/s at its lowest position. The is 0.5 m long. The speed of the bob, when the length makes an angle of 60º to the vertical will be (g = 10 m/s2)
A) 0.5 m/s
B) 0.33 m/s
C) 3 m/s
D) 2 m/s
Answer: D) 2 m/s
Question-47 A capillary tube (P) is dipped in water. Another identical tube (Q) is dipped in a soap water solution. Which of the following shows the relative nature of the liquids columns in the two tubes ?
A) 
B) 
C) 
D) 
Answer: B)
Question-48 Let p and E denote the linear momentum and energy of a photon. If the wavelength is decreased,
A) Both p and E increase.
B) p increases and E decreases.
C) p decreases and E increases.
D) Both p and E decreases.
Answer: A) Both p and E increase.
Question-49 A charge of 1 \muC is divided into two parts such that their charges are in the ratio of 2 : 3. These two charges are kept at a distance 1 m apart in vacuum. Then, the electric force between them (in N) is
A) 0.216
B) 0.00216
C) 0.0216
D) 2.16
Answer: B) 0.00216
Question-50 Sunlight of intensity 50 Wm-2 is incident normally on the surface of a solar panel. Some part of incident energy (25%) is reflected from the surface and the rest is absorbed. The force exerted on 1 m2 surface area will be close to (c = 3 x 108 m/s)
A)
15\times10^{-8\;}NB)
20\times10^{-8\;}NC)
10\times10^{-8\;}ND)
35\times10^{-8\;}NAnswer: B)
Chemistry
Question-1 Arrange the following in the order of increasing rnass (atomic mass; O = 16, Cu = 63, N = 14)
(I) One atom of oxygen
(II) One atom of nitrogen
(III) 1 x 10-10 mole of oxygen
(IV) 1 x 10-10 mole of copper
A) II < I < III < IV
B) I < II < III < IV
C) IV < II < III < I
D) II < IV < I < III
Answer: A) II < I < III < IV
Question-2 In the N2 molecule, the rumber of electron pairs shared by the nitrogen atoms is
A) 1
B) 2
C) 3
D) 5
Answer: C) 3
Question-3 The correct statement about the product of the following reaction is
A) configuration of the product is 100% inverted.
B) configuration of the product is 100% retention.
C) of inverted product is less than retention product.
D) the product will be a racemic mixture.
Answer: D) the product will be a racemic mixture.
Question-4 Lead (IV) oxide is:
A) only basic.
B) only acidic.
C) neutral.
D) amphoteric.
Answer: D) amphoteric.
Question-5 A 5% solution (w/w) of cane sugar (molar = 342 g mol-1) has freezing point 271K. What will be the freezing point of 5% glucose (molar mass = 180 g mol-1) in water, if freezing point of pure water is 273.15K?
A) 273.07 K
B) 269.07 K
C) 273.15 K
D) 260.09 K
Answer: B) 269.07 K
Question-6 In the steady state approximation, if I is the intermediate formed, then
A)
\lbrack I\rbrack=0B)
\left[I\right]\neq0C)
\frac{d\left[I\right]}{dt}=0D) None of the above.
Answer: C)
Question-7 Arrange the following in correct order of basicity
A) II > I > III
B) III > II > I
C) I > III > II
D) None
Answer: A) II > I > III
Question-8 Match the following
| Column-I | Column-II |
| (A) Co | (i) Wilkinson catalyst |
| (B) Zn | (ii) Chlorophyll |
| (C) Rh | (iii) Vitamin B-12 |
| (D) Mg | (iv) Carbonic anhydrase |
A) (A —iii), (B —iv), (C —i), (D — ii)
B) (A — i), (B — ii), (C —iii), (D —iv)
C) (A — ii), (B —i), (C —iv), (D — iii)
D) (A — iv), (B —iii), (C — i), (D — ii)
Answer: A) (A —iii), (B —iv), (C —i), (D — ii)
Question-9 Which one of the following types of drugs reduces fever?
A) Tranquiliser
B) Antibiotic
C) Antipyretic
D) Analgesic
Answer: C) Antipyretic
Question-10 Follow the provided scheme and identify X and Y.
| X | Y | P | Q | |
| i) | MgO | Mg(OH)2 | Mg(OH)2 | N2 |
| ii) | MgO | Mg3N2 | Mg(OH)2 | NH3 |
| iii) | MgO | Mg3N2 | Mg(OH)2 | N2 |
| iv) | MgO | MgCO3 | Mg(OH)2 | CO2 |
A) (i)
B) (ii)
C) (iii)
D) (iv)
Answer: B) (ii)
Question-11 The geometry of ClO3¯ ion according to Valence Shell Electron Pair Repulsion (VSEPR) theory will be
A) Planar triangular
B) Pyramidal
C) Tetrahedral
D) Square planar
Answer: B) Pyramidal
Question-12 Assume each reaction is carried out in an open container. For which reaction, \triangleH = \triangleE?
A)
H_2(g)+Br_2(g)\rightarrow2HBr(g)B)
C(s)+2H_2O(g)\rightarrow2H_2(g)+CO_2(g)C)
PCl_5(g)\rightarrow PCl_3(g)+Cl_2(g)D)
2CO(g)+O_2(g)\rightarrow2CO_2(g)Answer: A)
Question-13 The elements with maximum and minimum melting in the second transition series respectively are
A) Cr and Zn.
B) Mn and Cd.
C) Cr and Hg.
D) Mo and Cd.
Answer: D) Mo and Cd.
Question-14 The detergent which has hydrogen bonding group at the soluble ends of the chain is
A) Anionic detergent
B) Cationic detergent
C) Non-ionic detergent
D) Sodium lauryl sulphate detergent
Answer: C) Non-ionic detergent
Question-15 The empirical formula of a compound is CH2O and its vapour density is 30. The molecular formula of the compound is:
A)
C_3H_6O_3B)
C_2H_4O_2C)
C_2H_4OD)
CH_4OAnswer: B)
Question-16 Quantitative of C, H, and extra elements (eg., N , S, P, and halogens) is carried out by LiebigS combustion , Carob Dumas, and Kjeldahl’s method.
Carius method is used for the quantitative estimation of:
A) C and H
B) Halogens, S and P
C) N
D) All
Answer: B) Halogens, S and P
Question-17 Acetyl Bromide on reaction with an excess of CH3MgI followed by treatment with a saturated solution of NH4Cl gives:
A) 2-methyl-2-propanol
B) Acetamide
C) Acetone
D) Acetyl iodide
Answer: A) 2-methyl-2-propanol
Question-18 Number of isomeric alcohols of molecular formula C6H14O , which gives positive Iodoform test is:
A) Two
B) Three
C) Four
D) Five
Answer: C) Four
Question-19 Calculate the freezing point of a solution containing 18 g glucose, C6H12O6 and 68.4 g sucrose, C12H22O11 in 200 g of water. The freezing point of pure water is 273 K and Kf for water is 1.86 K kg mol-1.
A) 270.21 K
B) 270 K
C) 273 K
D) 279 K
Answer: A) 270.21 K
Question-20 The correct order of nucleophilicity:
| A |  |
| B | CH3O¯ |
| C | CN¯ |
| D |  |
A) A>B>C>D
B) D>C>B>A
C) C>B>A>D
D) None
Answer: C) C>B>A>D
Question-21 Schottky defect in crystals is observed, when :
A) Density of crystal is increased
B) An ion leaves its normal site and occupies an interstitial site
C) Equal of cations and anions are missing from the lattice
D) Unequal number of cations and anions are missing from the lattice
Answer: C) Equal of cations and anions are missing from the lattice
Question-22 The number of molecules of chlorine liberated at the from molten sodium chloride in one minute by a current of 300 milliamperes is
A)
5.618\times10^{18}B)
5.618\times10^{19}C)
2.4\times10^{20}D)
2.4\times10^{18}Answer: B)
Question-23 What is the formula of carbolic acid ?
A)
HCOOHB)
CH_3COOHC)
C_6H_5COOHD)
C_6H_5OHAnswer: D)
Question-24 Arnong the following, the reaction that proceeds through an electrophilic substitution, is:
A) 
B) 
C) 
D) 
Answer: B)
Question-25 In an aqueous solution of B2+ (1M) at 25ºC, when a metal rod A is dipped, then (electrode potential of A2+ || A = —O. 76 V; B2+ || B = +0.34 V)
A) A will gradually dissolve
B) B will gradually dissolve
C) No reaction will occur
D) Water will decompose into Hydrogen and Oxygen gas
Answer: A) A will gradually dissolve
Question-26 An element of 3d—transition series shows two oxidation states x and y differing by two units. Then compounds in oxidation state
A) x are ionic if x > y
B) x are ionic if x < y
C) y are covalent if x = y
D) y are covalent if y < x
Answer: B) x are ionic if x < y
Question-27 Calculate the half-life of first-order reactions from their rate constants given below:
200 s-1, 2 min-1, 4 years-1
A)
3.46\times10^{-3}s,\;3.46\times10^{-1}\;min,\;1.73\times10^{-1}\;yearsB)
2.46\times10^{-3}s,\;2.46\times10^{-1}\;min,\;0.73\times10^{-1}\;yearsC)
1.46\times10^{-3}s,\;1.46\times10^{-1}\;min,\;2.73\times10^{-1}\;yearsD) None of these
Answer: A)
Question-28 Which of the following reaction and name of the reaction is incorrectly matched?
A) Williamson synthesis
B) Kolbés reaction
C) Wolff -Kishner reduction
D) Gattermann-Koch reaction
Answer: C)
Question-29 Which group is called buffer group of the periodic table
A) I
B) VII
C) VIII
D) Zero
Answer: D) Zero
Question-30 When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes cathode and anode are respectively:
A) Pure zinc ,pure copper
B) Impure sample, pure copper
C) Impure zinc, impure sample
D) Pure copper, impure sample
Answer: D) Pure copper, impure sample
Question-31 As per IUPAC nomenclature, the name of the complex [Co(H2O)4(NH3)2]Cl3 is
A) Tetraaquadiaminecobalt (Ill) chloride
B) TetraaquaDiamminecobal (Ill) chloride
C) DiminTetraaqua Cobalt (Ill) chloride
D) Diamminetetraaquacobalt (Ill) chloride
Answer: D) Diamminetetraaquacobalt (Ill) chloride
Question-32 The first compound of noble gas prepared by Bartlett was
A)
XeOF_4B)
Xe^+{\lbrack Pt\;F_6\rbrack}^-C)
XeF_4D)
XeF_6Answer: B)
Question-33 According to Faradays first law
A)
w=\frac{96500\times E}{I\times t}B)
w=\frac{E\times I\times t}{96500}C)
E=\frac{I\times t\times96500}wD)
E=\frac{I\times w}{t\times96500}Answer: B)
Question-34 The heats of combustion of carbon and carbon monoxide are —393.5 and — 283.5 kJ mol-1, respectively. The heat of formation (in kJ) of carbon monoxide per mole is:
A) -676.5
B) -110
C) 110.5
D) 676.5
Answer: B) -110
Question-35 The monorner of neoprene rubber is
A) 
B) 
C) 
D) 
Answer: A)
Question-36 Match the following
| Column I | Column II |
| A. Na | p. Can form peroxides |
| B. Ba | q. Imparts colour to Bunsen flame |
| C. Li | r. Can form nitrides |
| D. Mg | s. Forms bicarbonates only in solution |
A)
A\rightarrow r,q,\;\;B\rightarrow s,p,\;\;C\rightarrow q,s,\;\;D\rightarrow rB)
A\rightarrow p,q,\;\;B\rightarrow r,p,\;\;C\rightarrow r,q,\;\;D\rightarrow sC)
A\rightarrow p,q,\;\;B\rightarrow p,q,r,s,\;\;C\rightarrow q,r,s\;\;\;D\rightarrow r,sD)
A\rightarrow q,r,\;\;B\rightarrow s,p,\;\;C\rightarrow r,q,\;\;\;D\rightarrow qAnswer: C)
Question-37 After the reaction is over between adsorbed reactants, it is important to create space for the other reactant molecules to approach the surface and react. The process responsible for this is known as
A) sorption
B) desorption
C) physisorption
D) chemisorptim
Answer: B) desorption
Question-38 The of rnoles of BaCO3 contains 1.5 moles of oxygen atoms is –
A) 0.5
B) 1
C) 3
D)
6.02\times10^{23}Answer: A) 0.5
Question-39 Arrange the following compounds in increasing order of their boiling points.
A) II < I < III
B) I < II < III
C) III < I < II
D) III < II < I
Answer: C) III < I < II
Question-40 Zn converts from molten state to its solid state in hcp structure. What is the of nearest atoms?
A) 4
B) 6
C) 8
D) 12
Answer: D) 12
Question-41 The deliquescent among the given compounds is
A)
ZnCl_2B)
Hg_2Cl_2C)
HgCl_2D)
CdCl_2Answer: A)
Question-42 In Lassaignds test, the sulphur present in the organic compound, on fusion with sodium, is converted into
A)
Na_2SB)
C_4H_4SC)
Na_2S_2O_3D)
CH_3SHAnswer: A)
Question-43 Which of the following nitrogenous compounds does not give blue colour in the usual Lassaignds test for the detection of nitrogen?
A) Glycine
B) Urea
C) Aniline
D) Hydrazine
Answer: D) Hydrazine
Question-44 Which of the following is the correct form of alanine at given pH conditions?
A) II and III
B) I and II
C) III and IV
D) None of these
Answer: A) II and III
Question-45 A tripeptide (X) on partial hydrolysis gave two dipeptides Cys-Gly and Glu-Cys, i.e.,
Identify the tripeptide.
A) Glu-Cys-Gly
B) Gly-Glu-Cys
C) Cys-Gly-Glu
D) Cys-Glu-Gly
Answer: A) Glu-Cys-Gly
Question-46 The total præsure of a mixture of H2 and 02 is 1.00 bar. Water, which is formed due to reaction between H2 and 02 , is completely removed in the form of liquid to leave pure stains of H2 at a presure of 0.35 bar. Assuming ideal gas behavior and all pressure rneasurements were made
under the same conditions of and volume, what is the mole fraction of H2 in the original mixture?
A) 0.78
B) 0.28
C) 0.22
D) 0.72
Answer: A) 0.78
Question-47 Which is not true in respect of beryllium chemistry?
A) Beryllium is amphoteric
B) It forms unusual carbide Be2C
C) Be(OH)2 is amphoteric
D) Beryllium halides are electron deficient
Answer: A) Beryllium is amphoteric
Question-48 Adrenaline and ephedrine contain
A) 1o amino group
B) 2o amino group
C) 3o amino group
D) Quaternary amino group
Answer: B) 2o amino group
Question-49 A colloidal system having a solid substance as a dispersed phase and a liquid as a dispersion medium is dassified as
A) Solid sol
B) Gel
C) Ernulsion
D) Sol
Answer: D) Sol
Question-50 A flask of capacity one litre contains NH3 at 1 atm & 25 ºC . A spark is passed through until all the NH3 is decomposed into N2 & H2 . Calculate the pressure of gases left at 25ºC .
A) 2 atm
B) 0.5 atm
C) 1.5 atm
D) 1 atm
Answer: A) 2 atm