MCQOPTIONS
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MCQOPTIONS
This section includes 255 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge (GK) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
What is obtained on adding lime to H2O? |
| A. | lime |
| B. | limestone |
| C. | slaked lime |
| D. | quicklime |
| Answer» D. quicklime | |
| 52. |
The SI unit of temperature is |
| A. | Kelvin |
| B. | second |
| C. | mole |
| D. | candela |
| Answer» B. second | |
| 53. |
The amount of substance in the SI system of units is represented by |
| A. | candela |
| B. | mole |
| C. | weight |
| D. | kilogram |
| Answer» C. weight | |
| 54. |
The National Physical Laboratory is situated at |
| A. | Kolkata |
| B. | New Delhi |
| C. | Bombay |
| D. | None of these |
| Answer» C. Bombay | |
| 55. |
How many fundamental units are present in the SI system of units? |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 3 |
| Answer» D. 3 | |
| 56. |
Which of the following physical quantities is different from others? |
| A. | speed |
| B. | distance |
| C. | energy |
| D. | average velocity |
| Answer» E. | |
| 57. |
The unit for the rate of change of velocity will be |
| A. | m/s |
| B. | m/s2 |
| C. | Ns |
| D. | N/s |
| Answer» C. Ns | |
| 58. |
The velocity of a body at rest is always |
| A. | unity |
| B. | negative |
| C. | zero |
| D. | infinite |
| Answer» D. infinite | |
| 59. |
The resistivity of a wire |
| A. | increase with the length of the wire |
| B. | decreases with the area of cross-section |
| C. | decreases with the length and increases with the crosssection of a wire |
| D. | None of the above |
| Answer» E. | |
| 60. |
Impulse is |
| A. | a scalar quantity |
| B. | a vector quantity |
| C. | neither a scalar nor a vector |
| D. | sometimes a scalar and sometimes a vector |
| Answer» C. neither a scalar nor a vector | |
| 61. |
A man is standing on a boat in still water. If he walks towards the shore the boat will |
| A. | move away from the shore |
| B. | remain stationary |
| C. | move towards the shore |
| D. | sink |
| Answer» B. remain stationary | |
| 62. |
Which of the following characteristics are associated with gaseous state? |
| A. | Definite shape, compressible, fixed volume |
| B. | Incompressible, fixed shape and size |
| C. | No fixed shape and size, highly compressible |
| D. | Fixed shape, incompressible, closely packed |
| Answer» D. Fixed shape, incompressible, closely packed | |
| 63. |
The term rancidity represents |
| A. | acid rain |
| B. | oxidation of fatty food |
| C. | rottening of fruit |
| D. | fading of coloured clothes in the sun |
| Answer» C. rottening of fruit | |
| 64. |
Improved variety of paddy (rice) is |
| A. | Ranjit |
| B. | Sonalika |
| C. | Ganga 101 |
| D. | Pusa 215 |
| Answer» C. Ganga 101 | |
| 65. |
Autosomes in humans are paired in |
| A. | 21 pairs |
| B. | 24 pairs |
| C. | 22 pairs |
| D. | 16 pairs |
| Answer» D. 16 pairs | |
| 66. |
Trypanosoma is |
| A. | bacteria |
| B. | fungus |
| C. | algae |
| D. | protozoa |
| Answer» E. | |
| 67. |
If action and reaction were to act on the same body, |
| A. | the resultant would be zero |
| B. | the body would not move at all |
| C. | both (a) and (b) are correct |
| D. | neither (a) nor (b) is correct |
| Answer» D. neither (a) nor (b) is correct | |
| 68. |
The combined effect of mass and velocity is taken into account by a physical quantity called |
| A. | torque |
| B. | moment of force |
| C. | momentum |
| D. | moment of momentum |
| Answer» D. moment of momentum | |
| 69. |
A rocket works on the |
| A. | first law of motion |
| B. | second law of motion |
| C. | third law of motion |
| D. | law of conservation of energy |
| Answer» D. law of conservation of energy | |
| 70. |
Random Movement of particles was discovered by |
| A. | Robert Brown |
| B. | E. Goldstein |
| C. | James Chadwick |
| D. | Wilhein Weins |
| Answer» B. E. Goldstein | |
| 71. |
Which of the following non-metals occur in liquid form at room temperature? |
| A. | bromine |
| B. | carbon |
| C. | sulphur |
| D. | chlorine |
| Answer» B. carbon | |
| 72. |
Scattering of light by colloidal particles is known as |
| A. | Tyndall effect |
| B. | Brownian motion |
| C. | reflection |
| D. | rectilinear propagation |
| Answer» B. Brownian motion | |
| 73. |
Which of the following acids is present in sour milk? |
| A. | glycolic acid |
| B. | lactic acid |
| C. | citrus acid |
| D. | tartaric acid |
| Answer» C. citrus acid | |
| 74. |
Brass is an example of a ______ |
| A. | homogenous compound |
| B. | homogenous mixture |
| C. | heterogeneous mixture |
| D. | heterogeneous compound |
| Answer» C. heterogeneous mixture | |
| 75. |
Which of the following acids is called the king of the acids? |
| A. | acetic acid |
| B. | phosphoric acid |
| C. | oxalic acid |
| D. | sulphuric acid |
| Answer» E. | |
| 76. |
Vitamin C is an organic acid known as |
| A. | ascorbic acid |
| B. | citrus acid |
| C. | glycolic acid |
| D. | acetic acid |
| Answer» B. citrus acid | |
| 77. |
The sharp pain caused by the sting of an ant is due to |
| A. | malic acid |
| B. | nitric acid |
| C. | formic acid |
| D. | lactic acid |
| Answer» D. lactic acid | |
| 78. |
Which of the following is not a property of acids? |
| A. | all acids have a sour taste |
| B. | acids turn blue litmus red |
| C. | acids turn red litmus blue |
| D. | all acids form H+ |
| Answer» D. all acids form H+ | |
| 79. |
Soaps are sodium salts of |
| A. | mineral acids |
| B. | fatty acids |
| C. | bases |
| D. | carbonic acid |
| Answer» C. bases | |
| 80. |
Sodium bicarbonate is also known as |
| A. | washing soda |
| B. | baking soda |
| C. | glauber s salt |
| D. | lime soda |
| Answer» C. glauber s salt | |
| 81. |
Example of analogy is |
| A. | wings of bird and butterfly |
| B. | limbs of horse and man |
| C. | wings of bat |
| D. | None of the above |
| Answer» B. limbs of horse and man | |
| 82. |
Which of the following acid is used in fire extinguishers? |
| A. | hydrochloric acid |
| B. | sulphuric acid |
| C. | nitric acid |
| D. | oxalic acid |
| Answer» C. nitric acid | |
| 83. |
Which of the following acid is used by goldsmiths for cleaning gold and silver ornaments? |
| A. | HCL |
| B. | H2SO4 |
| C. | HNO3 |
| D. | H3PO4 |
| Answer» D. H3PO4 | |
| 84. |
Which order of relative size amongst the following is incorrect? |
| A. | Li < Na < K |
| B. | C < Si < Al |
| C. | Mg > Al < Na |
| D. | F < Cl < Br |
| Answer» D. F < Cl < Br | |
| 85. |
Which one of the following has the smallest size? |
| A. | Al |
| B. | Al+ |
| C. | Al+2 |
| D. | Al+3 |
| Answer» E. | |
| 86. |
When steam is passed over hot coke, it produces |
| A. | producer gas |
| B. | synthesis gas |
| C. | tear gas |
| D. | coal gas |
| Answer» C. tear gas | |
| 87. |
Which of the following is an example of fossil fuel? |
| A. | coal gas |
| B. | coke |
| C. | natural gas |
| D. | producer gas |
| Answer» D. producer gas | |
| 88. |
Water gas consists of |
| A. | water vapour and coal dust |
| B. | a mixture of carbon monoxide and hydrogen |
| C. | a mixture of carbon monoxide and the nitrogen |
| D. | water vapour and methane. |
| Answer» C. a mixture of carbon monoxide and the nitrogen | |
| 89. |
The gas used in the welding and cutting of metals is |
| A. | ethane |
| B. | ethene |
| C. | ethyne |
| D. | propene |
| Answer» D. propene | |
| 90. |
Coal with largest C content is |
| A. | anthracite |
| B. | peat |
| C. | lignite |
| D. | bituminous |
| Answer» B. peat | |
| 91. |
An allotropic form of carbon used for cutting and drilling is |
| A. | charcoal |
| B. | bone charcoal |
| C. | graphite |
| D. | diamond |
| Answer» E. | |
| 92. |
Which of them is not an ore of silver? |
| A. | Ag2S |
| B. | AgNO3 |
| C. | AgCl |
| D. | None of these |
| Answer» E. | |
| 93. |
Sodium is a |
| A. | silvery white and very soft metal |
| B. | colourless and hard metal |
| C. | silvery white and very hard metal |
| D. | colourless and very soft metal |
| Answer» B. colourless and hard metal | |
| 94. |
An amalgam of metal has which other element? |
| A. | C |
| B. | Ag |
| C. | Mg |
| D. | Hg |
| Answer» E. | |
| 95. |
Gold is alloyed with which metal to make it harder? |
| A. | Cu |
| B. | Hg |
| C. | Ag |
| D. | C |
| Answer» B. Hg | |
| 96. |
The most abundant metal on the earth is |
| A. | iron |
| B. | gold |
| C. | aluminium |
| D. | copper |
| Answer» D. copper | |
| 97. |
Metallurgy is the process of |
| A. | extracting metals from the Ore |
| B. | roasting the Ore |
| C. | liquefaction of nitrogen |
| D. | adding carbon to the Ore in blast furnace |
| Answer» B. roasting the Ore | |
| 98. |
A metal, which melts on the palm |
| A. | potassium |
| B. | sodium |
| C. | gallium |
| D. | zinc |
| Answer» C. gallium | |
| 99. |
The process of protecting iron by coating with Zinc. |
| A. | smelting |
| B. | galvanising |
| C. | rusting |
| D. | corrosion |
| Answer» C. rusting | |
| 100. |
A lustrous non-metal is |
| A. | diamond |
| B. | iodine |
| C. | sulphur |
| D. | phosphorus |
| Answer» C. sulphur | |