MCQOPTIONS
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MCQOPTIONS
This section includes 113 Mcqs, each offering curated multiple-choice questions to sharpen your JIPMER knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
One of the breeding techniques useful to eliminate harmful recessive genes by selection is |
| A. | artificial insemination |
| B. | outbreeding |
| C. | inbreeding |
| D. | MOET |
| Answer» D. MOET | |
| 52. |
In which of the following the oxidation number of oxygen has been arranged in increasing order? |
| A. | BaO2 < KO2 < O3 < OF2 |
| B. | OF2 < KO2 < BaO2 < O3 |
| C. | BaO2 < O3 < OF2 < KO2 |
| D. | KO2 < OF2 < O3 < BaO2 |
| Answer» B. OF2 < KO2 < BaO2 < O3 | |
| 53. |
The volume of water to be added to 100 cm3 of 0.5 N H2SO4 to get decinormal concentration is |
| A. | 100 cm3 |
| B. | 450 cm3 |
| C. | 500 cm3 |
| D. | 400 cm3 |
| Answer» E. | |
| 54. |
Which of the following fibres is made of polyamides? |
| A. | Dacron |
| B. | Orion |
| C. | Nylon |
| D. | Rayon |
| Answer» D. Rayon | |
| 55. |
Sulphur reacts with chlorine in 1 : 2 ratio and forms X. Hydrolysis of X gives a sulphur compound Y. The hybridization of central atom in the anion Y is |
| A. | sp3 |
| B. | sp2 |
| C. | sp3d |
| D. | sp |
| Answer» B. sp2 | |
| 56. |
Flux is used to |
| A. | remove all type of impurities |
| B. | reduce metal oxide |
| C. | remove carbonate and sulphate |
| D. | remove silica and undesirable metal oxides |
| Answer» E. | |
| 57. |
A first order reaction is 50% completed in 1.26 × 1014 How much time would it takes for 100% completion? |
| A. | 1.26 × 1015 s |
| B. | 2.52 × 1014 s |
| C. | 2.52 × 1028 s |
| D. | Infinite |
| Answer» E. | |
| 58. |
A solid AB has NaCl structure. If the radius of cation A+ is 170 pm, then the maximum possible radius of the anion B− is |
| A. | 397.4 pm |
| B. | 347.9 pm |
| C. | 210.9 pm |
| D. | 410.6 pm |
| Answer» E. | |
| 59. |
Which of the following region is coldest? |
| A. | Stratosphere |
| B. | Troposphere |
| C. | Mesosphere |
| D. | Thermosphere |
| Answer» D. Thermosphere | |
| 60. |
Which of the following sodium compound/compound(s) are formed when an organic compound containing both nitrogen and sulphur is fused with sodium? |
| A. | Cyanide and sulphide |
| B. | Thiocyanate |
| C. | Sulphite and cyanide |
| D. | Nitrate and sulphide |
| Answer» C. Sulphite and cyanide | |
| 61. |
On hydrolysis of starch, we finally get |
| A. | glucose |
| B. | fructose |
| C. | Both (a) and (b) |
| D. | sucrose |
| Answer» B. fructose | |
| 62. |
Which of the following coordination compounds would exhibit optical isomerism? |
| A. | Pentamminenitrocobalt (III) iodide |
| B. | Tris-(ethylenediamine) cobalt (III) bromide |
| C. | Trans-dicyanobis (ethylenediamine) |
| D. | Diamminedinitroplatisum (II) |
| Answer» C. Trans-dicyanobis (ethylenediamine) | |
| 63. |
Polymer formation from monomers starts by |
| A. | condensation reaction between monomers |
| B. | coordination reaction between monomers |
| C. | conversion of one monomer into other monomer |
| D. | hydrolysis of monomers |
| Answer» B. coordination reaction between monomers | |
| 64. |
Clemmensen reaction of ketone is carried out in the presence of |
| A. | LiAlH4 |
| B. | Zn-Hg with HCl |
| C. | glycol with KOH |
| D. | H2 with Pt as catalyst |
| Answer» C. glycol with KOH | |
| 65. |
In cyamide extraction process of silver from argentite ore, the oxidizing and reducing agents are respectively. |
| A. | O2 and CO2 |
| B. | O2 and Zn dust |
| C. | HNO3 and Zn dust |
| D. | HNO3 and CO |
| Answer» C. HNO3 and Zn dust | |
| 66. |
Which of the following is not applicable to the phenomenon of adsorption? |
| A. | ∆H > 0 |
| B. | ∆G < 0 |
| C. | ∆S < 0 |
| D. | ∆H < 0 |
| Answer» E. | |
| 67. |
When 750 mL of 0.5 M HCl is mixed with 250 mL of 2M NaOH solution, the value of pH will be |
| A. | pH = 7 |
| B. | pH > 7 |
| C. | pH < 7 |
| D. | pH = 0 |
| Answer» C. pH < 7 | |
| 68. |
The energy released when 6 moles of octane is burnt in air will be [Given, ∆Hf for CO2(g), H2O(g) and C8H8(l), respectively are −490, −240 and +160 J/mol] |
| A. | −37.4 kJ |
| B. | −20 kJ |
| C. | −6.2 kJ |
| D. | −35.5 kJ |
| Answer» E. | |
| 69. |
How many Faradays are required to reduce 1 mol of |
| A. | 3 |
| B. | 5 |
| C. | 6 |
| D. | 4 |
| Answer» D. 4 | |
| 70. |
Which one among the following is added to soap to impart antiseptic property? |
| A. | Sodium lauryl sulphate |
| B. | Sodium dodecyl benzene sulphonates |
| C. | Rosin |
| D. | Bithional |
| Answer» E. | |
| 71. |
Among the following compounds, which compound is polar as well as exhibit sp2-hyrbidization by the central atom |
| A. | H2CO3 |
| B. | SiF4 |
| C. | BF3 |
| D. | HClO3 |
| Answer» B. SiF4 | |
| 72. |
Which of the following is the correct order of stability for the given superoxides? |
| A. | KO2 > RbO2 < CsO2 |
| B. | CsO2 < RbO2 < KO2 |
| C. | RbO2 < CsO2 < KO2 |
| D. | KO2 < CsO2 < RbO2 |
| Answer» B. CsO2 < RbO2 < KO2 | |
| 73. |
In which of the following compounds, sulphur show maximum oxidation number? |
| A. | H2SO4 |
| B. | SO3 |
| C. | H2S2O7 |
| D. | All have same oxidation number for sulphur |
| Answer» E. | |
| 74. |
Which of the following is not expected to show paramagnetism? |
| A. | [Ni(H2O)]2+ |
| B. | Ni(CO)4 |
| C. | [Ni(NH3)4]2+ |
| D. | [Co(NH3)6]2+ |
| Answer» C. [Ni(NH3)4]2+ | |
| 75. |
When the heat of reaction at constant pressure is −5 × 103 cal and entropy change is 7.4 cal deg−1 at 25°C, the reaction is predicted as |
| A. | reversible |
| B. | spontaneous |
| C. | non-spontaneous |
| D. | irreversible |
| Answer» C. non-spontaneous | |
| 76. |
When a lead storage battery is discharged; |
| A. | SO2 is evolved |
| B. | lead sulphate is consumed |
| C. | lead is formed |
| D. | sulphuric acid is consumed |
| Answer» E. | |
| 77. |
Which of the following aqueous solution should have highest boiling point? |
| A. | 1.0 M NaOH |
| B. | 1.0 M Na2SO4 |
| C. | 1.0 M NH4NO3 |
| D. | 1.0 MKNO3 |
| Answer» C. 1.0 M NH4NO3 | |
| 78. |
The shape of gaseous SnCl2 is |
| A. | tetrahedral |
| B. | linear |
| C. | angular |
| D. | T-shape |
| Answer» D. T-shape | |
| 79. |
When CO2 is bubbled through a solution of barium peroxide in water then |
| A. | carbonic acid is formed |
| B. | O2 is released |
| C. | H2O2 is formed |
| D. | no reaction occurs |
| Answer» D. no reaction occurs | |
| 80. |
Which of the following oxide is most acidic? |
| A. | As2O3 |
| B. | P2O5 |
| C. | Sb2O3 |
| D. | Bi2O3 |
| Answer» C. Sb2O3 | |
| 81. |
Which of the following compound is not coloured? |
| A. | Na2CuCl |
| B. | Na2Cd ∙ Cl4 |
| C. | FeSO4 |
| D. | Vl3 |
| Answer» C. FeSO4 | |
| 82. |
Which of the following pairs is isotonic? |
| A. | A and B |
| B. | A and D |
| C. | A and C |
| D. | B and C |
| Answer» B. A and D | |
| 83. |
A cubic unit cell of a metal with molar mass of 63.55 g mol−1 has an edge length of 362 pm. Its density is 8.92 g cm−3. The type of unit cell is |
| A. | primitive |
| B. | face centred |
| C. | end centred |
| D. | body centred |
| Answer» C. end centred | |
| 84. |
Which of the following is least soluble in water? |
| A. | C2H6 |
| B. | CH3OH |
| C. | CH3NH2 |
| D. | C6H5OH |
| Answer» B. CH3OH | |
| 85. |
The normality of 10% (w/v) of acetic acid is |
| A. | 1 N |
| B. | 1.3 N |
| C. | 1.7 N |
| D. | 1.9 N |
| Answer» D. 1.9 N | |
| 86. |
The compressibility of a gas is less than unity at STP, therefore |
| A. | Vm > 22.4 L |
| B. | Vm < 22.4 L |
| C. | Vm = 22.4 L |
| D. | Vm = 44.8 L |
| Answer» C. Vm = 22.4 L | |
| 87. |
You are given resistance wire of length 50 cm and a battery of negligible resistance. In which of the following cases is largest amount of heat generated? |
| A. | When the wire is connected to the battery directly |
| B. | When the wire is divided into two parts and both the parts are connected to the battery in parallel. |
| C. | When the wire is divided into four parts and all the four parts are connected to the battery in parallel. |
| D. | When only half of the wire is connected to the battery. |
| Answer» D. When only half of the wire is connected to the battery. | |
| 88. |
The temperature of source and sink of a heat engine are 127°C and 27°C, respectively. An inventor claims its efficiency to be 26%, then |
| A. | it is impossible |
| B. | it is possible with high probability |
| C. | it is possible with low probability |
| D. | Data are insufficient |
| Answer» B. it is possible with high probability | |
| 89. |
An ice-berg of density 900 kgm−3 is floating in water of density 1000 kgm−3. The percentage of volume of ice-berg outside the water is |
| A. | 20% |
| B. | 35% |
| C. | 10% |
| D. | 11% |
| Answer» D. 11% | |
| 90. |
A photo cell is illuminated by a small bright source placed 1m away. When the same source of light is placed 2m away, the electrons emitted by photo cathode |
| A. | carry one quarter of their previous energy |
| B. | carry one quarter of their previous momenta |
| C. | are half as numerous |
| D. | are one quarter as numerous |
| Answer» E. | |
| 91. |
The mass of a proton is 1847 times that of an electron. A electron and a proton are injected into a uniform electric field at right angle to the direction of the filed with the same initial K.E. |
| A. | the electron trajectory will be less curved than the proton trajectory. |
| B. | both the trajectories will be straight. |
| C. | the proton trajectory will be less curved than the electron trajectory. |
| D. | both the trajectories will be equally curved. |
| Answer» E. | |
| 92. |
A uniform electric field and a uniform magnetic field acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity, then |
| A. | it will turn towards left of direction of motion. |
| B. | it will turn towards right of direction of motion. |
| C. | its velocity will increase. |
| D. | its velocity will decrease. |
| Answer» E. | |
| 93. |
Two identical conducting balls A and B have positive charges q1 and q2 But q1 ≠ q2/ The balls are brought together so that they touch each other and then kept in their original positions. The force between them is |
| A. | less than that before the balls touched |
| B. | greater than that before the balls touched |
| C. | same as that before the balls touched |
| D. | zero |
| Answer» C. same as that before the balls touched | |
| 94. |
The half-life period of a radioactive element X is same as the mean life of another radioactive element Y. Initially, both of them have the same numbers of atoms then, |
| A. | X and Y have the same decay rate initially. |
| B. | X and Y decay at the same rate always |
| C. | Y will decay at a faster rate than X |
| D. | X will decay at a faster rate than Y |
| Answer» D. X will decay at a faster rate than Y | |
| 95. |
The maximum numbers of possible interference maxima for slit separation equal to twice the wavelength in Young’s double slit experiment is |
| A. | infinite |
| B. | five |
| C. | three |
| D. | zero |
| Answer» C. three | |
| 96. |
A beam of light composed of red and green rays is incident obliquely at a point on the face of a rectangular glass slab. When coming out on the opposite parallel face, the red and green rays emerge from |
| A. | two points propagating in two different non-parallel directions. |
| B. | two points propagating in two different parallel directions. |
| C. | one point propagating in two different directions. |
| D. | one point propagating in the same direction. |
| Answer» C. one point propagating in two different directions. | |
| 97. |
A certain charge Q is divided into two parts q and Q – q. How the charge Q and q must be related so that when q and (Q – q) is placed at a certain distance apart experience maximum electrostatic repulsion? |
| A. | Q = 2q |
| B. | Q = 3q |
| C. | Q = 4q |
| D. | Q = 4q + c |
| Answer» B. Q = 3q | |
| 98. |
A piece of blue glass heated to a high temperature and a piece of red glass at room temperature are taken inside a dimly-lit room. Then, |
| A. | the blue piece will look blue and the red piece will look red as usual. |
| B. | the red piece will look brighter red and the blue piece will look ordinary blue. |
| C. | the blue will look brighter as compared to the red piece. |
| D. | both the pieces will look equal red. |
| Answer» D. both the pieces will look equal red. | |
| 99. |
A graph between pressure P(along y-axis) and absolute temperature, T(along x-axis) for equal moles of two gases has been drawn. Given that volume of second gas is more than volume of first gas. Which of the following statement is correct? |
| A. | Slope of gas 1 is less than gas 2 |
| B. | Slope of gas 1 is more than gas 2 |
| C. | Both have some slopes |
| D. | None of the above |
| Answer» C. Both have some slopes | |
| 100. |
Two identical glass spheres filled with air are connected by a horizontal glass tube. The glass tube contains a pellet of mercury at its mid-points. Air in one sphere is at 0°C and the other is at 20° If both the vessels are heated through 10°C, then neglecting the expansions of the bulbs and the tube |
| A. | the mercury pellet gets displaced towards the sphere at lower temperature. |
| B. | the mercury pellet gets displaced towards the sphere at higher temperature. |
| C. | the mercury pellet does not get displaced at all |
| D. | the temperature rise causes the pellet to expand without any displacement. |
| Answer» D. the temperature rise causes the pellet to expand without any displacement. | |