MCQOPTIONS
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MCQOPTIONS
This section includes 2016 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Find the power of a convex lens if the image formed is at distance of 20 cm from the lens when the object is placed on the other side of the lens at 60 cm from the optical centre? |
| A. | 3.33 dioptre |
| B. | 15 dioptre |
| C. | 12.5 dioptre |
| D. | -3.33 dioptre |
| Answer» C. 12.5 dioptre | |
| 52. |
In about 5 billion years after the sun has consumed almost all of its hydrogen fuel it will become a ____________. |
| A. | blue dwarf |
| B. | black hole |
| C. | supernova |
| D. | red giant |
| Answer» E. | |
| 53. |
A motion that travels the same distance at the same time? |
| A. | Uniform motion |
| B. | Retarding motion |
| C. | Non uniform motion |
| D. | Non-linear motion |
| Answer» B. Retarding motion | |
| 54. |
In medium, the nature of sound waves is |
| A. | only transverse |
| B. | both longitudinal and transverse |
| C. | neither longitudinal nor transverse |
| D. | only longitudinal |
| Answer» E. | |
| 55. |
If the distance between two consecutive crests is L, then the wavelength is given by ______. |
| A. | L |
| B. | \(\frac{L}{2}\) |
| C. | \(\frac{L}{4}\) |
| D. | 2L |
| Answer» B. \(\frac{L}{2}\) | |
| 56. |
‘Femto’ means ten raised to the power of ______. |
| A. | -12 |
| B. | -16 |
| C. | -20 |
| D. | -15 |
| Answer» E. | |
| 57. |
Momentum has the same units as that of ________. |
| A. | Impulse |
| B. | Force |
| C. | Acceleration |
| D. | Speed |
| Answer» B. Force | |
| 58. |
If an object has a mass of 100 kg on Earth, what would be its mass on the Moon? |
| A. | 0 kg |
| B. | 100 kg |
| C. | 16.7 kg |
| D. | 980 kg |
| Answer» C. 16.7 kg | |
| 59. |
For a certain reaction, ΔGθ = -45 kJ/mol and ΔHθ = -90 kJ/mol at 0 °C. What is the minimum temperature at which the reaction will become spontaneous, assuming that ΔHθ and ΔSθ are independent of temperature? |
| A. | 273 K |
| B. | 298 K |
| C. | 546 K |
| D. | 596 K |
| Answer» D. 596 K | |
| 60. |
Match the following:- Quantity SI Unit 1. Resistance a. Watt 2. Energy b. Ohm 3. Power c. Joule |
| A. | 1 – b, 2 – c, 3 – a |
| B. | 1 – a, 2 – c, 3 – b |
| C. | 1 – b, 2 – a, 3 – c |
| D. | 1 – c, 2 – a, 3 – b |
| Answer» B. 1 – a, 2 – c, 3 – b | |
| 61. |
If a bicycle of mass 10 kg moves at a speed of 20 m/s then the kinetic energy of the bicycle is: |
| A. | 2000 J |
| B. | 400 J |
| C. | 4000 J |
| D. | 200 J |
| Answer» B. 400 J | |
| 62. |
At what temperature water converts to water vapour? |
| A. | 273 K |
| B. | 100 K |
| C. | 373 K |
| D. | 0 K |
| Answer» D. 0 K | |
| 63. |
Melting point of ice is _____? |
| A. | 40°C |
| B. | 50°C |
| C. | 1000°C |
| D. | 0°C |
| Answer» E. | |
| 64. |
A cylindrical wire of length L and radius r has resistance R. the resistance of another wire of same material but of twice its length and twice its radius is: |
| A. | 4R |
| B. | 2R |
| C. | R |
| D. | R/2 |
| Answer» E. | |
| 65. |
Match the names of scientific instruments in Column 1 with their designated fields of applications in Column 2 and select the correct answer using the options below the columns:Column 1 Column 2 1. Galvanometer a. measure internal pressure of the eye 2. Hygrometer b. Measure electric currents 3. Manometer c. Measure humidity levels 4. Tonometer d. Pressure of gases |
| A. | 1 - d, 2 - a, 3 - c, 4 - b |
| B. | 1 - b, 2 - c, 3 - d, 4 - a |
| C. | 1 - c, 2 - d, 3 - a, 4 - c |
| D. | 1 - a, 2 - c, 3 - b, 4 - d |
| Answer» C. 1 - c, 2 - d, 3 - a, 4 - c | |
| 66. |
Newton's first law of motion is also known as |
| A. | Constancy principle |
| B. | Principle of relativity |
| C. | Causality principle |
| D. | Principle of inertia |
| Answer» E. | |
| 67. |
A ball is dropped from a height of 80 m. The distance travelled by it in the fourth second will be ________.(take g = 10 m/s2) |
| A. | 50 m |
| B. | 15 m |
| C. | 80 m |
| D. | 35 m |
| Answer» E. | |
| 68. |
Consider the following pairs.Size of Object or distance: Length (in m)1] Size of the hydrogen atom: 10-102] Height of Mount Everest above sea level: 1083] Distance of moon from Earth: 10124] Distance to Andromeda galaxy: 1022Which of the above pairs are correctly matched? |
| A. | 1 and 3 only |
| B. | 2, 3 and 4 only |
| C. | 1 and 4 only |
| D. | 1, 2 , 3 and 4 |
| Answer» D. 1, 2 , 3 and 4 | |
| 69. |
Assertion (A) : Cricket player pulls his hands backwards while catching the ball coming towards him with high velocityReason (R) : To catch the ball without missing |
| A. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| B. | Both (A) and (R) are true but (R) is not the correct explanation of (A) |
| C. | (A) is true but (R) is false |
| D. | (A) is false but (R) is true |
| Answer» B. Both (A) and (R) are true but (R) is not the correct explanation of (A) | |
| 70. |
A 10 kg object falls a distance of 4 m. The Work done by the force of gravity acting on it is (take g = 10 m/s2): |
| A. | 200 J |
| B. | 100 J |
| C. | 300 J |
| D. | 400 J |
| Answer» E. | |
| 71. |
G. S. Ohm is the discoverer of which the following? |
| A. | Law of Electrostatic Attraction |
| B. | Photoelectric effect |
| C. | Law of Electric Resistance |
| D. | Thermionic Emission (Electrons Emitting from hot-source) |
| Answer» D. Thermionic Emission (Electrons Emitting from hot-source) | |
| 72. |
Consider the following statements regarding the Principle of Centrifugation.1. As per the principle, the lighter particles are forced to the bottom and the denser particles stay at the top when spun rapidly.2. This principle is applied in diagnostic laboratories for blood and urine tests.3. This principle is applied in dairies and in homes to separate butter from cream.Which of the statements given above is/are correct? |
| A. | 1 only |
| B. | 3 only |
| C. | 2 and 3 |
| D. | 2 only |
| Answer» D. 2 only | |
| 73. |
Knives have a sharper cutting edge because it: |
| A. | Increases the area of contact and increases the pressure exerted |
| B. | Increases the area of contact and decreases the pressure exerted |
| C. | Decreases the area of contact and decreases the pressure exerted |
| D. | Decreases the area of contact and increases the pressure exerted |
| Answer» E. | |
| 74. |
A solar cell is made up of ________. |
| A. | Carbon |
| B. | Gallium |
| C. | Silicon |
| D. | Teflon |
| Answer» D. Teflon | |
| 75. |
Identify the substance from the below having highest specific heat capacity. |
| A. | Ice |
| B. | Kerosene |
| C. | Aluminium |
| D. | Water |
| Answer» E. | |
| 76. |
1 kilowatt hour (kWh) of energy = ______ joule. |
| A. | 3.6 × 106 |
| B. | 1.8 × 104 |
| C. | 1.8 × 106 |
| D. | 3.6 × 104 |
| Answer» B. 1.8 × 104 | |
| 77. |
An alpha particle is same as? |
| A. | a helium nucleus |
| B. | a hydrogen nucleus |
| C. | a proton |
| D. | a positron |
| Answer» B. a hydrogen nucleus | |
| 78. |
Calculate the mass defect (in 'u') in an atom of 16O8 of atomic mass 16.12744 u. (masses of neutron, proton and electron are 1.00866 u, 1.00727 u and0.00055 u). |
| A. | 0.008800 |
| B. | 0.013200 |
| C. | 0.002200 |
| D. | 0.004400 |
| Answer» E. | |
| 79. |
On the basis of which phenomenon does a Jet engine work? |
| A. | Conservation of Velocity |
| B. | Conservation of Linear Momentum |
| C. | Conservation of Circular Momentum |
| D. | Conservation of Acceleration |
| Answer» C. Conservation of Circular Momentum | |
| 80. |
Match the type of nuclear radiation with its penetration power.Type of nuclearradiationPenetration PowerA. Alpha1. Very highB. Beta2. LowC. Gamma3. Moderate |
| A. | A-1, B-3, C-2 |
| B. | A-3, B-2, C-1 |
| C. | A-3, B-1, C-2 |
| D. | A-2, B-3, C-1 |
| Answer» E. | |
| 81. |
Ohm's law limits:1. This does not apply to gaseous conductors.2. This does not apply to semiconductors such as germanium and silicon. |
| A. | Only 1 |
| B. | Neither 1 nor 2 |
| C. | Both 1 and 2 |
| D. | Only 2 |
| Answer» D. Only 2 | |
| 82. |
A resistor of length L and area of cross-section A has a resistance R. Another resistors, of the same material, of length L/2 and area of cross-section, 2A will have a resistance of____. |
| A. | R/2 |
| B. | 2R |
| C. | R/4 |
| D. | R |
| Answer» D. R | |
| 83. |
Inertia is proportional to ________. |
| A. | Mass |
| B. | Weight |
| C. | Length |
| D. | Height |
| Answer» B. Weight | |
| 84. |
A plumb bob is hanging from the ceiling of a car. If the car moves with an acceleration a, the angle made by the string with the vertical is ________. |
| A. | \({\sin ^{ - 1}}\left( {\frac{a}{g}} \right)\) |
| B. | \({\sin ^{ - 1}}\left( {\frac{g}{a}} \right)\) |
| C. | \({\tan ^{ - 1}}\left( {\frac{a}{g}} \right)\) |
| D. | \({\tan ^{ - 1}}\left( {\frac{g}{a}} \right)\) |
| Answer» D. \({\tan ^{ - 1}}\left( {\frac{g}{a}} \right)\) | |
| 85. |
If V/I is a constant, it is called ________. |
| A. | Resistance |
| B. | Coulomb |
| C. | Current |
| D. | Potential difference |
| Answer» B. Coulomb | |
| 86. |
Mirages are formed primarily due to _________of light. |
| A. | Reflection |
| B. | Diffusion |
| C. | Total Internal Reflection |
| D. | Scattering |
| Answer» D. Scattering | |
| 87. |
Calculate the pressure (in Pa) if a thrust of 750 N is applied to an area of 5 m2? |
| A. | 37.5 |
| B. | 150 |
| C. | 75 |
| D. | 100 |
| Answer» C. 75 | |
| 88. |
Nuclear fission can be controlled by using control rods made up of: |
| A. | Calcium |
| B. | Magnesium |
| C. | Boron |
| D. | Aluminium |
| Answer» D. Aluminium | |
| 89. |
During inelastic collision between two bodies, which of the following quantities always remains conserved? |
| A. | Total kinetic energy |
| B. | Total mechanical energy |
| C. | Total linear momentum |
| D. | Speed of each body |
| Answer» D. Speed of each body | |
| 90. |
In a plane mirror, a virtual image is always formed: |
| A. | Behind the mirror |
| B. | Behind the object |
| C. | At infinite distance from the mirror |
| D. | In between the object and mirror |
| Answer» B. Behind the object | |
| 91. |
Match the following:List - I (Physical Quantity)List - II (Unit)a. Surface tensioni. Poiseb. Impulseii. Pascalc. Viscosityiii. Newton/md. Pressure iv. Newton - sec |
| A. | a - ii, b - iii, c - iv, d- i |
| B. | a - iii, b - ii, c - i, d - iv |
| C. | a - iii, b - iv, c - i, d - ii |
| D. | a - iv, b - i, c - ii, d - iii |
| Answer» D. a - iv, b - i, c - ii, d - iii | |
| 92. |
A source of voltage V maintains a current i in a circuit. The energy supplied to the circuit by the source in time t is __________. |
| A. | Vit |
| B. | 1/Vit |
| C. | Vi/t |
| D. | V/it |
| Answer» B. 1/Vit | |
| 93. |
______ is an instrument for measuring the relative humidity of the atmosphere. |
| A. | Hygrometer |
| B. | Barometer |
| C. | Hydrometer |
| D. | Anemometer |
| Answer» B. Barometer | |
| 94. |
Nuclear power is mainly derived from |
| A. | uranium |
| B. | platinum |
| C. | silver |
| D. | None of the above |
| Answer» B. platinum | |
| 95. |
One Horse Power = _____ Watt? |
| A. | 546 |
| B. | 746 |
| C. | 846 |
| D. | 648 |
| Answer» C. 846 | |
| 96. |
________ is the process by which water vapour in the air is changed into liquid water. |
| A. | Precipitation |
| B. | Evaporation |
| C. | Decantation |
| D. | Condensation |
| Answer» E. | |
| 97. |
A constant current of 1.0 A is maintained in a resistor of 12 Ω. The amount of charge that flows through this resistor in on minute will be _________. |
| A. | 30 C |
| B. | 12 C |
| C. | 60 C |
| D. | 1 C |
| Answer» D. 1 C | |
| 98. |
A sound source sends waves of 600 Hz. It produces a wavelength of 3 m. The velocity of the sound wave in question is |
| A. | 1800 ms-1 |
| B. | 1800 ms2 |
| C. | 1800 ms1 |
| D. | 1800 ms + 1 |
| Answer» B. 1800 ms2 | |
| 99. |
"amu" is a unit of? |
| A. | Mass |
| B. | Length |
| C. | Frequency |
| D. | Area |
| Answer» B. Length | |
| 100. |
A magnet attracts fillings made of |
| A. | Iron and Steel |
| B. | Brass and Iron |
| C. | Brass, Iron and Steel |
| D. | Only Iron |
| Answer» B. Brass and Iron | |