MCQOPTIONS
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MCQOPTIONS
This section includes 467 Mcqs, each offering curated multiple-choice questions to sharpen your Railways knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
How much would a man, whose mass is 60 kg weight on the moon? |
| A. | 9.8 N |
| B. | 600 N |
| C. | 60 N |
| D. | 98 N |
| Answer» D. 98 N | |
| 102. |
If acceleration of a free fall on Moon is \[1.6\,\,m{{s}^{-2}}\] and on Earth is \[10\,\,m{{s}^{-2}}\]A rock has a mass of 10 kg on Earth. Its weight on Earth will be |
| A. | 16 N |
| B. | 100 N |
| C. | 32 N |
| D. | 50 N |
| Answer» C. 32 N | |
| 103. |
Mass remains ____ throughout the universe. |
| A. | varies |
| B. | zero |
| C. | constant |
| D. | negative |
| Answer» D. negative | |
| 104. |
The weight of an object of mass 15 kg at the centre of the earth is ___. |
| A. | 147 N |
| B. | 147 kg |
| C. | zero |
| D. | 150 N |
| Answer» D. 150 N | |
| 105. |
In Newton's second law of motion, what is the relationship between acceleration and mass? Acceleration |
| A. | Is directly proportional to mass. |
| B. | Is inversely proportional to mass. |
| C. | Does not depend on mass. |
| D. | It is dividing by mass. |
| Answer» C. Does not depend on mass. | |
| 106. |
Which of the following statements are true of both weight and mass? |
| A. | Mass depends on gravity, weight does not |
| B. | Heavier objects weigh more than light objects. |
| C. | Gravity is necessary to measure both weight and mass |
| D. | Weight is a force, mass is a measure of inertia |
| Answer» E. | |
| 107. |
Sum of amount of matter in a substance is called its |
| A. | mass |
| B. | weight |
| C. | length |
| D. | volume |
| Answer» B. weight | |
| 108. |
Which has the most mass? |
| A. | Pluto |
| B. | A Pencil |
| C. | Earth |
| D. | The Moon |
| Answer» D. The Moon | |
| 109. |
Specific weight of mercury is |
| A. | \[13.6\,kg/{{m}^{3}}\] |
| B. | \[13600\,kg/{{m}^{3}}\] |
| C. | \[136\,kg/{{m}^{3}}\] |
| D. | all the above |
| Answer» C. \[136\,kg/{{m}^{3}}\] | |
| 110. |
It is a product of mass density and gravitational acceleration |
| A. | mass density |
| B. | specific weight |
| C. | specific volume |
| D. | specific gravity |
| Answer» C. specific volume | |
| 111. |
Specific weight of water at \[20{}^\circ C\] is |
| A. | \[9810\,\,kg/{{m}^{3}}\] |
| B. | \[9810N/{{m}^{3}}\] |
| C. | \[9.81\,\,kg/{{m}^{3}}\] |
| D. | all the above |
| Answer» C. \[9.81\,\,kg/{{m}^{3}}\] | |
| 112. |
The ratio of specific weight of liquid to specific weight of water is |
| A. | specific gravity |
| B. | specific weight |
| C. | specific volume |
| D. | all the above |
| Answer» B. specific weight | |
| 113. |
The size, mass & density of which of the planets is very near to those of Earth? |
| A. | Venus |
| B. | Mercury |
| C. | Jupiter |
| D. | Saturn |
| Answer» B. Mercury | |
| 114. |
An alloy has a relative density of 10. If the density of water is \[1000\,kg/{{m}^{3}}\], the density of the alloy is: |
| A. | \[100\,\,kg/{{m}^{3}}\] |
| B. | \[0.01\,\,kg/{{m}^{3}}\] |
| C. | \[10,000\,\,kg/{{m}^{3}}\] |
| D. | \[1010\,\,kg/{{m}^{3}}\] |
| Answer» D. \[1010\,\,kg/{{m}^{3}}\] | |
| 115. |
The density of water at room temperature is about |
| A. | \[10\,g/c{{m}^{3}}\] |
| B. | \[1\,g/c{{m}^{3}}\] |
| C. | \[0.1\,g/c{{m}^{3}}\] |
| D. | \[0.01\,g/c{{m}^{3}}\] |
| Answer» C. \[0.1\,g/c{{m}^{3}}\] | |
| 116. |
Which of these has the lowest density? |
| A. | cork |
| B. | glass |
| C. | water |
| D. | aluminum |
| Answer» B. glass | |
| 117. |
To determine the density of a Solid, we have to determine its |
| A. | mass and area |
| B. | weight and area |
| C. | mass and volume |
| D. | weight and volume |
| Answer» D. weight and volume | |
| 118. |
The density of wood is\[0.65\,\,gc{{m}^{-3}}\]in CGS system. Its density in SI system is |
| A. | \[65\,\,kg{{m}^{-3}}\] |
| B. | \[6.5\,\,kg{{m}^{-3}}\] |
| C. | \[650\,\,kg{{m}^{-3}}\] |
| D. | \[0.65\,\,kg{{m}^{-3}}\] |
| Answer» D. \[0.65\,\,kg{{m}^{-3}}\] | |
| 119. |
When air is cooled, its density |
| A. | increases |
| B. | decreases |
| C. | remains same |
| D. | None of these |
| Answer» B. decreases | |
| 120. |
When water is heated, it expands and |
| A. | rises upward |
| B. | moves downward |
| C. | remain at the same place |
| D. | None of these |
| Answer» B. moves downward | |
| 121. |
The density of aluminum is 2.7 g/cm3. Its density in kg/m3 is |
| A. | \[27\,\,kg/{{m}^{3}}\] |
| B. | \[2700\,kg/{{m}^{3}}\] |
| C. | \[270\,\,kg/{{m}^{3}}\] |
| D. | \[27000\,\,kg/{{m}^{3}}\]b |
| Answer» C. \[270\,\,kg/{{m}^{3}}\] | |
| 122. |
Kepler's second law is based on |
| A. | Newton's first law |
| B. | Newton's second law |
| C. | Special theory of relativity |
| D. | Conservation of angular momentum |
| Answer» E. | |
| 123. |
If the mass of a ball is 5 kg on earth, then what would be its mass on Jupiter? |
| A. | 5 kg |
| B. | 5000 kg |
| C. | 40000 kg |
| D. | 50 kg |
| Answer» B. 5000 kg | |
| 124. |
Aman waves his arm, while walking. This is |
| A. | To keep constant velocity |
| B. | To ease the tension |
| C. | To increase the velocity |
| D. | To balance the effect of earth's gravity. |
| Answer» E. | |
| 125. |
Weight is the measure of the force of___ on an object. |
| A. | Density |
| B. | Mass |
| C. | Matter |
| D. | Gravity |
| Answer» E. | |
| 126. |
Which method of determining mass involves measuring how much an object resists acceleration? |
| A. | Inertial mass |
| B. | Atomic mass |
| C. | Gravitational mass |
| D. | Newton mass- |
| Answer» B. Atomic mass | |
| 127. |
What is the weight of a 1kg mass object on planet Earth? |
| A. | 9.8 pounds |
| B. | 1 Newton |
| C. | 5 New tons |
| D. | 9.8 New tons |
| Answer» E. | |
| 128. |
The law of______ of mass states that the mass of a loosed system must remain constant over time. |
| A. | Weight |
| B. | Density |
| C. | Consistency |
| D. | Conservation |
| Answer» E. | |
| 129. |
Mass and weight |
| A. | Both measure the same thing. |
| B. | Are exactly equal. |
| C. | Are two different quantities. |
| D. | Are both measured in kilograms. |
| Answer» D. Are both measured in kilograms. | |
| 130. |
Regular volume is measured in |
| A. | Pounds (Ibs) |
| B. | Grams (g) |
| C. | Milliliters (mL) |
| D. | Cubic centimeters |
| Answer» E. | |
| 131. |
What is weight? |
| A. | The amount of space an object takes up |
| B. | The amount of matter in an object |
| C. | The pull of gravity on an object |
| D. | Mass divided by volume |
| Answer» D. Mass divided by volume | |
| 132. |
What is Mass? |
| A. | The amount of space an object takes up |
| B. | The amount of matter in an object |
| C. | The pull of gravity on an object |
| D. | Mass divided by volume |
| Answer» C. The pull of gravity on an object | |
| 133. |
What is volume? |
| A. | The amount of space an object takes up |
| B. | The amount of matter in an object |
| C. | The pull of gravity on an object |
| D. | Mass divided by volume |
| Answer» B. The amount of matter in an object | |
| 134. |
As we gain altitude density of air |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | none of above |
| Answer» C. remains constant | |
| 135. |
For an object of mass 4 kg, incorrect statement is |
| A. | Weight of object on earth =10\[\times \]Mass of object on earth |
| B. | Mass of object on earth = Mass of object on moon |
| C. | Weight of object on earth = 1/6\[\times \]Weight of object on moon |
| D. | Weight of object on moon = 1/6\[\times \]Weight of object on earth |
| Answer» D. Weight of object on moon = 1/6\[\times \]Weight of object on earth | |
| 136. |
Difference between mass and weight is |
| A. | mass is a force and weight is a quantity |
| B. | mass and weight both are force |
| C. | mass and weight both are quantities |
| D. | mass is quantity and weight is force |
| Answer» E. | |
| 137. |
Due to Earth's gravitational pull, 1 kg mass experiences force of |
| A. | 5 N |
| B. | 100 N |
| C. | 50 N |
| D. | 10 N |
| Answer» E. | |
| 138. |
Beam balance or calibrated electronic balance is used to measure |
| A. | Mass |
| B. | Time |
| C. | Weight |
| D. | acceleration |
| Answer» B. Time | |
| 139. |
Force due to pull of gravity is called |
| A. | Weight |
| B. | Force |
| C. | Mass |
| D. | Tension |
| Answer» B. Force | |
| 140. |
Newton is unit of |
| A. | Weight |
| B. | Mass |
| C. | Energy |
| D. | Power |
| Answer» B. Mass | |
| 141. |
Mass of an object can be measured easily by using |
| A. | screw gauge |
| B. | physical balance |
| C. | beam balance or calibrated electronic balance |
| D. | spring balance/compression balance |
| Answer» D. spring balance/compression balance | |
| 142. |
Mass of oil is 11040 kg and volume is 12 m3, its density would be |
| A. | \[92\,\,kg\,\,{{m}^{-3}}\] |
| B. | \[920\,\,kg\,\,{{m}^{-3}}\] |
| C. | \[9.2\,\,kg\,\,{{m}^{-3}}\] |
| D. | \[1.08\times {{10}^{-3}}\] |
| Answer» C. \[9.2\,\,kg\,\,{{m}^{-3}}\] | |
| 143. |
Density of 5 liter of water having mass 5 kg is: |
| A. | \[100\,\,kg\,\,{{m}^{-3}}\] |
| B. | \[1000\,\,kg\,\,{{m}^{-3}}\] |
| C. | \[250\,\,kg\,\,{{m}^{-3}}\] |
| D. | \[7500\,\,kg\,\,{{m}^{-3}}\] |
| Answer» C. \[250\,\,kg\,\,{{m}^{-3}}\] | |
| 144. |
If the fulcrum is closer to the effort, it will take |
| A. | More force to lift the load |
| B. | Less force to lift the load |
| C. | Equal force to the lift the load |
| D. | No force to life the load |
| Answer» B. Less force to lift the load | |
| 145. |
Levers are divided into _______ classes based on the location of the fulcrum and of the input and output forces. |
| A. | Four |
| B. | three |
| C. | five |
| D. | two |
| Answer» C. five | |
| 146. |
Which simple machine is an inclined plane wrapped around a cylinder? |
| A. | Wedge |
| B. | Screw |
| C. | Wheel and axle |
| D. | Lever |
| Answer» C. Wheel and axle | |
| 147. |
A pulley is a simple machine used to: |
| A. | multiply force |
| B. | apply a force at a convenient point |
| C. | apply a force in a convenient direction |
| D. | None of these |
| Answer» D. None of these | |
| 148. |
Wheelbarrow is an example of: |
| A. | Lever of the first order |
| B. | Lever of the second order |
| C. | Lever of the third order |
| D. | Inclined plane |
| Answer» C. Lever of the third order | |
| 149. |
Machines require proper care and maintenance: |
| A. | to make them look good |
| B. | for preserving them for future |
| C. | for their efficient and longer use |
| D. | None of these |
| Answer» D. None of these | |
| 150. |
A wire cutter is an example of: |
| A. | Lever of first order |
| B. | Lever of second order |
| C. | Lever of third order |
| D. | None of these |
| Answer» B. Lever of second order | |