MCQOPTIONS
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MCQOPTIONS
This section includes 1292 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
The theory behind stars twinkling is that |
| A. | The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time |
| B. | The intensity of light emitted by them changes with time |
| C. | The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere |
| D. | The distance of the stars from the earth changes with time |
| Answer» B. The intensity of light emitted by them changes with time | |
| 102. |
The time period of a sound wave is 0.01 seconds. Find its frequency (in Hz). |
| A. | 100 |
| B. | 10 |
| C. | 50 |
| D. | 20 |
| Answer» B. 10 | |
| 103. |
The tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called |
| A. | velocity |
| B. | force |
| C. | momentum |
| D. | inertia |
| Answer» E. | |
| 104. |
The tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called ___ |
| A. | inertia |
| B. | momentum |
| C. | energy |
| D. | force |
| Answer» B. momentum | |
| 105. |
The sum of potential energy and kinetic energy is known as |
| A. | Electrical energy |
| B. | Chemical energy |
| C. | Light energy |
| D. | Mechanical energy |
| Answer» E. | |
| 106. |
The taper on the lathe spindle is |
| A. | 1 in 10 |
| B. | 1 in 20 |
| C. | 1 in 15 |
| D. | 1 in 25 |
| Answer» C. 1 in 15 | |
| 107. |
The swift movement of the falling water droplets along with the rising air create lightning and sound. It is this event that we call a ________________. |
| A. | thunderstorm |
| B. | hail |
| C. | twister |
| D. | cloudburst |
| Answer» B. hail | |
| 108. |
The temperature at which water boils depends mainly on |
| A. | Air Pressure |
| B. | Specific heat |
| C. | Density |
| D. | Relative humidity |
| Answer» B. Specific heat | |
| 109. |
The substances which reduce friction are called _________. |
| A. | irregularities |
| B. | lubricants |
| C. | adhesives |
| D. | viscous |
| Answer» C. adhesives | |
| 110. |
The strength of a force is usually expressed by its __________. |
| A. | Motion |
| B. | Direction |
| C. | Interaction |
| D. | Magnitude |
| Answer» E. | |
| 111. |
The strength of an electromagnet can be increased by |
| A. | increasing the length of the coiled wire |
| B. | increasing current supply |
| C. | increasing the number of turns |
| D. | All of the above |
| Answer» E. | |
| 112. |
The strain produced in a body is directly proportional to the stress applied on it, is called _______. |
| A. | Dollar's law |
| B. | Hooke's law |
| C. | Miller's law |
| D. | Kepler's law |
| Answer» C. Miller's law | |
| 113. |
The standard unit for measuring the frequency of a sound wave is ........._x005F_x000D_ Â _x005F_x000D_ |
| A. | metre per second |
| B. | newton |
| C. | metre |
| D. | hertz |
| Answer» E. | |
| 114. |
The spring constant of a spring depends on its |
| A. | length only |
| B. | material only |
| C. | length and its diameter |
| D. | thickness, its diameter and its material |
| Answer» E. | |
| 115. |
The spring balance works on the principle of __________ |
| A. | Boyle's Law |
| B. | Hooke's Law |
| C. | Bernoulli's principle |
| D. | Pascal's Law |
| Answer» C. Bernoulli's principle | |
| 116. |
The speed of the light is maximum in |
| A. | Air |
| B. | Vacuum |
| C. | Water |
| D. | Glass |
| Answer» C. Water | |
| 117. |
The speed of sound in air at 0°is_x005F_x000D_ |
| A. | 331 m/s |
| B. | 330 m/s |
| C. | 330 ms |
| D. | 331 ms |
| Answer» B. 330 m/s | |
| 118. |
The speed of light in vacuum is estimated as ___ meters/second. |
| A. | 3.00 x 108 |
| B. | 3.10 x 108 |
| C. | 3.12 x 108 |
| D. | 3.15 x 108 |
| Answer» B. 3.10 x 108 | |
| 119. |
The solubility of a gas in a liquid is |
| A. | increased with increasing pressure |
| B. | decreased with increasing temperature |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 120. |
The slope of a DistanceÂTime graph shows ___________. |
| A. | acceleration |
| B. | momentum |
| C. | mass |
| D. | speed |
| Answer» E. | |
| 121. |
The sliding friction is _______________ than the static friction. |
| A. | double |
| B. | same |
| C. | greater |
| D. | smaller |
| Answer» E. | |
| 122. |
The side mirrors of vehicles are of which type of mirrors? |
| A. | Convex |
| B. | Concave |
| C. | Plane |
| D. | Inverted |
| Answer» B. Concave | |
| 123. |
The SI unit of weight is a |
| A. | Kg |
| B. | Newton |
| C. | Gram |
| D. | Dyne |
| Answer» C. Gram | |
| 124. |
The SI unit of thrust is ......._x005F_x000D_ |
| A. | Pascal |
| B. | Ohm |
| C. | Newton |
| D. | Joule |
| Answer» D. Joule | |
| 125. |
The SI unit of resistance is: |
| A. | Newton |
| B. | Coulomb |
| C. | Ohm |
| D. | Joule |
| Answer» D. Joule | |
| 126. |
The SI unit of momentum is _____________. |
| A. | kilogram-metre per second |
| B. | kilogram-metre per second |
| C. | kilogram-metre-second |
| D. | kilogram-metre-second squared |
| Answer» B. kilogram-metre per second | |
| 127. |
The SI unit of G, the universal gravitation constant is ______________. |
| A. | NÂ m2Â kg2 |
| B. | NÂ m2Â kg-2 |
| C. | NÂ m-2Â kg-2 |
| D. | NÂ m-2Â kg2 |
| Answer» C. NÂ m-2Â kg-2 | |
| 128. |
The SI unit of acceleration is _______________. |
| A. | meters per seconds squared |
| B. | meters per second |
| C. | seconds per meter |
| D. | seconds per meter squared |
| Answer» B. meters per second | |
| 129. |
The SI unit of acceleration is __________. |
| A. | ms-1 |
| B. | ms-2 |
| C. | ms2 |
| D. | m/s |
| Answer» C. ms2 | |
| 130. |
The SI unit of intensity of sound is ______. |
| A. | watt per square meter |
| B. | joule per square meter |
| C. | newton per square meter |
| D. | tesla per square meter |
| Answer» B. joule per square meter | |
| 131. |
The SI unit of electric charge is |
| A. | ohm |
| B. | volt |
| C. | ampere |
| D. | coulomb |
| Answer» E. | |
| 132. |
The sensation of sound persists in the human brain for about: |
| A. | 0.5 sec |
| B. | 0.2 sec |
| C. | 0.1 sec |
| D. | 1 sec |
| Answer» D. 1 sec | |
| 133. |
The second equation of motion gives the relation between |
| A. | Velocity and time |
| B. | Position and velocity |
| C. | Position and time |
| D. | Velocity and acceleration |
| Answer» D. Velocity and acceleration | |
| 134. |
The Second Equation of Motion gives the relationship between ......... and Time._x005F_x000D_ |
| A. | Acceleration |
| B. | Position |
| C. | Momentum |
| D. | Velocity |
| Answer» C. Momentum | |
| 135. |
The shortest distance measured from the initial to the final position of an object is known as the _________________. |
| A. | motion |
| B. | direction |
| C. | velocity |
| D. | displacement |
| Answer» E. | |
| 136. |
The second law of motion states:_x005F_x000D_ Â _x005F_x000D_ |
| A. | Every object will move in a uniform motion when a net force is applied. |
| B. | The rate of change of momentum of an object is proportional to the net force applied on the object in the direction of net force. |
| C. | Every object will remain at rest or in a state of uniform motion unless compelled to change its slate by the action of a net force. |
| D. | The rate of change of speed of a body will change with the net force applied. |
| Answer» C. Every object will remain at rest or in a state of uniform motion unless compelled to change its slate by the action of a net force. | |
| 137. |
The rotational effect of a force on a body about an axis of rotation is described in terms of |
| A. | Centre of gravity |
| B. | Centripetal force |
| C. | Centrifugal force |
| D. | Moment of force |
| Answer» E. | |
| 138. |
The safest hammers are those with heads that are |
| A. | cast steel and chiseled |
| B. | alloy and drop-forged steel |
| C. | welded and alloyed |
| D. | chiseled and drop forged |
| Answer» C. welded and alloyed | |
| 139. |
The reverse effect of X-ray emission is |
| A. | Raman effect |
| B. | Compton effect |
| C. | Zeeman effect |
| D. | Photo-electric effect |
| Answer» E. | |
| 140. |
The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because |
| A. | the ringing is not loud enough |
| B. | the glass of the bell jar absorbs the sound waves |
| C. | the bell jar is too small |
| D. | there is no air or any other gas in the bell jar |
| Answer» E. | |
| 141. |
The resistance of a metallic wire_x005F_x000D_ |
| A. | directly proportional to its length and inversely proportional to its area of cross-section. |
| B. | inversely proportional to the product of its area of cross-section and length |
| C. | inversely proportional to its length and directly proportional to its area of cross-section |
| D. | directly proportional to the product of its area of cross-section and length |
| Answer» B. inversely proportional to the product of its area of cross-section and length | |
| 142. |
The reflection formed by the plane mirror is ________________. |
| A. | vertical inversion |
| B. | a real image |
| C. | lateral inversion |
| D. | an enlarged image |
| Answer» D. an enlarged image | |
| 143. |
The repeated reflection that results in persistence of sound is called |
| A. | echo |
| B. | reflection |
| C. | rarefaction |
| D. | reverberation |
| Answer» E. | |
| 144. |
The reflector of a search light is a : |
| A. | Convex mirror |
| B. | Concave mirror |
| C. | Plane mirror |
| D. | Cylindrical mirror |
| Answer» C. Plane mirror | |
| 145. |
The resistance of a conductor is inversely proportional to its: |
| A. | length |
| B. | resistivity |
| C. | temperature |
| D. | area of cross section |
| Answer» E. | |
| 146. |
The relative density of a substance is the ____._x005F_x000D_ |
| A. | ratio of its density to the density of water |
| B. | ratio of the density of water to its density |
| C. | product of the density of water to its density |
| D. | ratio of the volume of water to its volume |
| Answer» B. ratio of the density of water to its density | |
| 147. |
The ratio of change in velocity of a body to the total time taken by it is its __________________. |
| A. | acceleration |
| B. | displacement |
| C. | force |
| D. | momentum |
| Answer» B. displacement | |
| 148. |
The rating for a fuse used in a household electric circuit is provided on the basis of:_x005F_x000D_ |
| A. | resistance |
| B. | voltage |
| C. | power |
| D. | current |
| Answer» E. | |
| 149. |
The rate of change of velocity is called |
| A. | Momentum |
| B. | Speed |
| C. | Acceleration |
| D. | Force |
| Answer» D. Force | |
| 150. |
The rate of flow of electric charge is measured in |
| A. | ampere |
| B. | coulomb |
| C. | ampere/coulomb |
| D. | ampere-coulomb |
| Answer» B. coulomb | |