MCQOPTIONS
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MCQOPTIONS
This section includes 38 Mcqs, each offering curated multiple-choice questions to sharpen your Energy Release and Conservation knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following energy change involves frictional force? i. Potential energy to sound energy ii. Chemical energy to heat energy iii. Kinetic energy to heat energy iv. Chemical energy to heat energy Choose the correct option among the following: |
| A. | Both (i) and (ii) |
| B. | Only (iv) |
| C. | Both (ii) and (iii) |
| D. | Only (iii) |
| Answer» E. | |
| 2. |
A microphone converts: |
| A. | Sound energy into mechanical energy in stereo system |
| B. | Sound energy into electrical energy in public address system |
| C. | Electrical energy into sound energy in ordinary telephone |
| D. | Microwave energy into sound energy in a mobile phone |
| Answer» C. Electrical energy into sound energy in ordinary telephone | |
| 3. |
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same: |
| A. | Potential energy |
| B. | Momenta |
| C. | Acceleration |
| D. | Kinetic energy |
| Answer» D. Kinetic energy | |
| 4. |
The work done on an object does not depend upon the: |
| A. | Angle between force and displacement |
| B. | Force applied |
| C. | Initial velocity of the object |
| D. | Displacement |
| Answer» D. Displacement | |
| 5. |
A body is falling from a height h. After it has fallen to a height of h/2, it will possess: |
| A. | Only kinetic energy |
| B. | Half kinetic and half potential energy |
| C. | Only potential energy |
| D. | More kinetic and less potential energy |
| Answer» E. | |
| 6. |
The type of energy possessed by a simple pendulum, when it is at the mean position is: |
| A. | Kinetic energy |
| B. | Potential energy |
| C. | Kinetic + Potential energy |
| D. | Sound energy |
| Answer» B. Potential energy | |
| 7. |
A man of mass 50 kg jumps to a height of 1 m. His potential energy at the highest point is |
| A. | 50 J |
| B. | 500 J |
| C. | 5 J |
| D. | 5000 J |
| Answer» C. 5 J | |
| 8. |
In the dams water is stored in the high reservoirs and then made to fall down. This falling water then rotates the turbines to generate electricity. In this energy conversion process can you tell the initial and final energies respectively? |
| A. | Kinetic energy and electrical energy |
| B. | Potential energy and kinetic energy |
| C. | Potential energy and electrical energy |
| D. | Kinetic energy and potential energy |
| Answer» B. Potential energy and kinetic energy | |
| 9. |
The form of energy possessed by a flying bird is: |
| A. | Kinetic energy |
| B. | Potential energy |
| C. | Both kinetic and potential energy |
| D. | Can t say |
| Answer» D. Can t say | |
| 10. |
The momentum of a bullet of mass 20 g fired from a gun is 10 kg m/s. The kinetic energy of this bullet in kJ will be: |
| A. | 25 |
| B. | 2.5 |
| C. | 0.25 |
| D. | 5 |
| Answer» C. 0.25 | |
| 11. |
Uranium is a fairly common element on Earth, but it was originally formed: |
| A. | on the moon |
| B. | in stars |
| C. | on asteroids |
| Answer» C. on asteroids | |
| 12. |
Uranium-235 splits when _______ hits its nucleus: |
| A. | a proton |
| B. | a neutron |
| C. | an electron |
| Answer» C. an electron | |
| 13. |
In hydroelectricity power_________________ |
| A. | Kinetic energy is transferred to potential |
| B. | Potential energy is transferred to kinetic |
| C. | Solar energy is transferred to wind energy |
| D. | Wind energy is transferred to solar energy |
| Answer» C. Solar energy is transferred to wind energy | |
| 14. |
A tidal barrage is a barrier built over a___________________ |
| A. | River bed |
| B. | River estuary |
| C. | River end |
| D. | River starting |
| Answer» C. River end | |
| 15. |
In the production of wave energy which form of energy is used? |
| A. | Potential energy |
| B. | Kinetic energy |
| C. | Solar energy |
| D. | Wind energy |
| Answer» C. Solar energy | |
| 16. |
The blades in wind turbines are connected to________________ |
| A. | Nacelle |
| B. | Tower |
| C. | Foundations |
| D. | String |
| Answer» B. Tower | |
| 17. |
The most nuclear fuel used in the world is________________ |
| A. | Thorium 232 |
| B. | Uranium 238 |
| C. | Uranium 235 |
| D. | Plutonium 239 |
| Answer» D. Plutonium 239 | |
| 18. |
Oil release sulfur dioxide gas when they burn. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 19. |
Energy is released from fossil fuels when they are___________________ |
| A. | Pumped |
| B. | Cooled |
| C. | Burned |
| D. | Pressurized |
| Answer» D. Pressurized | |
| 20. |
A car is accelerated on a leveled road and attains a velocity 4 times of its initial velocity. In this process, the kinetic energy of the car |
| A. | Becomes twice to that of the initial |
| B. | Becomes four times to that of the initial |
| C. | Remains the same |
| D. | Becomes 16 times to that of the initial |
| Answer» E. | |
| 21. |
When a body like earth is moving in a circular path the work done in that case is zero because: |
| A. | Centripetal force acts in the direction of motion of the body |
| B. | Centripetal force acts along the radius of circular path |
| C. | Gravitational force acts along the radius of circular path |
| D. | Centrifugal force acts perpendicular to the radius of circular path |
| Answer» C. Gravitational force acts along the radius of circular path | |
| 22. |
The ideal shape for the uranium-235 sample used in a nuclear reactor is: |
| A. | a sphere |
| B. | a pyramid |
| C. | a sheet |
| Answer» D. | |
| 23. |
When a body falls freely towards the earth, then its total energy |
| A. | Decreases |
| B. | Increases |
| C. | First increases and then decreases |
| D. | Remains constant |
| Answer» E. | |
| 24. |
What are some of the difficulties with nuclear power? |
| A. | dealing with spent fuel, which is toxic |
| B. | transporting fuel to the power plant |
| C. | both A and B |
| Answer» D. | |
| 25. |
A man is carrying the heavy luggage from one platform to the other of a Railway station but still according to the logics of science his work done is said to be zero. Can you opt out the correct reason? |
| A. | The force is acting along the direction of displacement of luggage |
| B. | The force is acting perpendicular to the direction of displacement of luggage |
| C. | The force is acting opposite to the direction of displacement of luggage |
| D. | None of these |
| Answer» C. The force is acting opposite to the direction of displacement of luggage | |
| 26. |
The main difference between a nuclear plant and an oil- or coal-fired plant is: |
| A. | the size of the generator |
| B. | the shape of the generator |
| C. | the fuel |
| Answer» D. | |
| 27. |
To prevent overheating, control rods: |
| A. | move extra uranium out of the way |
| B. | absorb excess neutrons |
| C. | create a barrier between different parts of the fuel |
| Answer» C. create a barrier between different parts of the fuel | |
| 28. |
Nuclear power plants produce energy through: |
| A. | induced fission |
| B. | induced fusion |
| C. | beta decay |
| Answer» B. induced fusion | |
| 29. |
Trapped heat inside the earth is known as_______________ |
| A. | Heat energy |
| B. | Kinetic energy |
| C. | Geothermal energy |
| D. | Thermal energy |
| Answer» D. Thermal energy | |
| 30. |
SI unit for energy is_____________ |
| A. | Watt |
| B. | Kilogram |
| C. | Newton |
| D. | Joule |
| Answer» E. | |
| 31. |
Energy in the form of heat and light is obtained by________________ |
| A. | Biomass |
| B. | Fossil fuels |
| C. | Sun |
| D. | Wind |
| Answer» D. Wind | |
| 32. |
According to WHO, how many premature deaths annually linked to air pollution causing by the burning of fossil fuels? |
| A. | One million |
| B. | Three million |
| C. | Five million |
| D. | Seven million |
| Answer» E. | |
| 33. |
How many forms of fossil fuels are there________________ |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» D. Four | |
| 34. |
Fission produces lots of energy because: |
| A. | Some of the subatomic particles disintegrate, releasing lots of energy. |
| B. | The fission products and neutrons have more mass than the original atom. |
| C. | The fission products and neutrons have less mass than the original atom |
| Answer» D. | |
| 35. |
Which of the following best explains about the usefulness of the production of ethanol in yeast cells under anaerobic conditions? |
| A. | Ethanol keeps the electron transport system functioning |
| B. | Yeast would be unable to activate the enzymes of the Krebs cycle without ethanol |
| C. | The process generates oxygen, which is required for glycolysis |
| D. | The process regenerates NAD+, which is required for glycolysis |
| Answer» E. | |
| 36. |
Solar panels generate electricity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 37. |
In order to produce solar energy during sunlight, where the energy is stored in the batteries? |
| A. | Nickel Sulfur |
| B. | Zinc Cadmium |
| C. | Nickel Cadmium |
| D. | Nickel Zinc |
| Answer» D. Nickel Zinc | |
| 38. |
Which one of the following is not the unit of energy? |
| A. | Kilowatt |
| B. | Kilowatt hour |
| C. | Joule |
| D. | Newton meter |
| Answer» B. Kilowatt hour | |