Download CBSE MCQs for Class 10 Physics: Source of Energy
Access targeted multiple-choice questions for Source of Energy designed to align with the latest CBSE academic syllabus for Class 10 Physics. These objective practice sets help students evaluate their conceptual understanding and improve exam readiness.
Chapter-wise Objective Questions: Source of Energy
Access the complete set of multiple-choice questions for Source of Energy below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official CBSE textbooks.
Multiple Choice Questions
(a) nuclear energy
(b) petroleum
(c) hydro energy
(d) coal
Show Answer & Explanation
Answer: (d) coal
Explanation:
1. Most of India's electricity and industrial energy comes from coal, which is plentiful in the country.
Teacher's Note:
1. Coal-based thermal plants dominate power generation.
(a) first quarter moon
(b) new moon and full moon
(c) third quarter moon
(d) eclipse only
Show Answer & Explanation
Answer: (b) new moon and full moon
Explanation:
1. At new and full moon the Sun, Moon and Earth are in a straight line, so their gravitational pulls add up and tides are high.
Teacher's Note:
1. Tides are low when the Sun and Moon are at right angles to the Earth.
(a) coal
(b) water
(c) sunlight
(d) diesel
Show Answer & Explanation
Answer: (b) water
Explanation:
1. A hydro power station uses the potential energy of water stored at a height.
Teacher's Note:
1. Dams store water at height.
(a) Peat
(b) Lignite
(c) Bituminous
(d) Anthracite
Show Answer & Explanation
Answer: (d) Anthracite
Explanation:
1. The carbon content is about 60 % in peat, 70 % in lignite, 80 % in bituminous coal and 90 % in anthracite.
Teacher's Note:
1. Hard coal has the highest carbon content.
(a) exhaustible
(b) non-replenishable
(c) limited
(d) inexhaustible
Show Answer & Explanation
Answer: (d) inexhaustible
Explanation:
1. A renewable source is continuously replenished by nature, so it is inexhaustible.
2. The other three describe non-renewable sources.
Teacher's Note:
1. Wind, sunlight, flowing water and tides are renewable.
(a) Fertiliser
(b) Nutritious food
(c) Cleaning detergent
(d) Poisonous gas
Show Answer & Explanation
Answer: (a) Fertiliser
Explanation:
1. The used slurry left in the plant is rich in nitrogen and phosphorus, so it is used as manure.
Teacher's Note:
1. Biogas gives fuel and manure.
(a) Wind
(b) Tidal energy
(c) Coal
(d) Geothermal energy
Show Answer & Explanation
Answer: (c) Coal
Explanation:
1. Coal formed over millions of years and cannot be replaced quickly.
Teacher's Note:
1. Fossil fuels and uranium are non-renewable.
(a) 2 degrees C
(b) 5 degrees C
(c) 20 degrees C
(d) 100 degrees C
Show Answer & Explanation
Answer: (c) 20 degrees C
Explanation:
1. OTEC works when warm surface water is at least about 20 degrees C warmer than deep water.
Teacher's Note:
1. Its advantage is that it can run 24 hours a day.
(a) Solar cooker
(b) Thermal power plant
(c) Hydro power plant
(d) Biogas plant
Show Answer & Explanation
Answer: (c) Hydro power plant
Explanation:
1. A hydro power plant uses the stored energy of water in a dam to generate electricity.
Teacher's Note:
1. Thermal plants use steam from burning fuel.
Assertion (A): In nuclear fission a tremendous amount of energy is released if the mass of the original nucleus is slightly more than the sum of the masses of the products.
Reason (R): The difference in mass, delta m, between the original nucleus and the product nuclei is converted into energy E = delta m c squared, where c is the speed of light in vacuum.
(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.
Show Answer & Explanation
Answer: (a) Both A and R are true, and R is the correct explanation of A.
Explanation:
1. A small mass difference is multiplied by c squared, a very large number, so a huge energy comes out. The assertion is true.
2. The reason gives exactly this relation, so it explains the assertion.
Teacher's Note:
1. Mass defect appears as energy.
(a) chemical, heat, kinetic, electrical
(b) heat, chemical, kinetic, electrical
(c) kinetic, heat, chemical, electrical
(d) chemical, kinetic, heat, electrical
Show Answer & Explanation
Answer: (a) chemical, heat, kinetic, electrical
Explanation:
1. Burning fuel converts chemical energy into heat.
2. Heat makes steam, which turns a turbine (kinetic energy) driving the generator (electrical energy).
Teacher's Note:
1. A thermal plant is usually built near a coal field to save transport cost.
(a) Oxygen
(b) Sulphur dioxide
(c) Nitrogen
(d) Argon
Show Answer & Explanation
Answer: (b) Sulphur dioxide
Explanation:
1. Burning coal and oil releases sulphur dioxide and oxides of nitrogen.
2. These dissolve in rain water to form acids, giving acid rain.
Teacher's Note:
1. Burning fossil fuels also releases carbon dioxide, which adds to global warming.
(a) nuclear fusion
(b) nuclear fission
(c) ionisation
(d) radioactive decay
Show Answer & Explanation
Answer: (b) nuclear fission
Explanation:
1. Splitting of a heavy nucleus after neutron capture is nuclear fission.
Teacher's Note:
1. Fusion is the joining of light nuclei.
(a) let infrared radiation in and prevent it from escaping
(b) reflect sunlight back
(c) absorb all heat
(d) cool the box
Show Answer & Explanation
Answer: (a) let infrared radiation in and prevent it from escaping
Explanation:
1. Radiation from the Sun enters through the glass and warms the black surface.
2. The heat radiation emitted by the hot surface is of longer wavelength and cannot pass back out, so heat is trapped.
Teacher's Note:
1. This is the same as the greenhouse effect.
(a) reflect all heat
(b) absorb heat radiation better
(c) are bad conductors of electricity
(d) glow in the dark
Show Answer & Explanation
Answer: (b) absorb heat radiation better
Explanation:
1. A black surface absorbs the maximum heat radiation falling on it, so the box heats quickly.
Teacher's Note:
1. A glass lid then traps the heat (greenhouse effect).
(a) visible radiations
(b) X-rays
(c) ultraviolet radiations
(d) infrared radiations
Show Answer & Explanation
Answer: (d) infrared radiations
Explanation:
1. Infrared radiation is heat radiation; it is absorbed by objects and warms them.
Teacher's Note:
1. Black surfaces absorb infrared well.
(a) Large areas are submerged and ecosystems are destroyed
(b) Water cannot be stored
(c) They produce smoke
(d) They need fuel
Show Answer & Explanation
Answer: (a) Large areas are submerged and ecosystems are destroyed
Explanation:
1. Dams flood large land areas, displace people and destroy the ecosystem of the region.
Teacher's Note:
1. Advantages: irrigation, flood control and cheap pollution-free power.
(a) It is pollution free
(b) It is available at all places all the time
(c) It can run heavy machinery
(d) It needs fuel
Show Answer & Explanation
Answer: (a) It is pollution free
Explanation:
1. Wind energy produces no smoke or harmful gases and is free of cost.
2. But it is available only where and when the wind blows.
Teacher's Note:
1. Its limitation: it depends on wind speed.
(a) heat stored inside the Earth
(b) falling water
(c) sea waves
(d) the Sun
Show Answer & Explanation
Answer: (a) heat stored inside the Earth
Explanation:
1. Hot magma heats rocks and underground water, producing steam in hot spots.
2. The steam turns a turbine to produce electricity.
Teacher's Note:
1. Hot springs and geysers are natural signs.
(a) 10 %
(b) 25 %
(c) 50 %
(d) 75 %
Show Answer & Explanation
Answer: (d) 75 %
Explanation:
1. Biogas is a mixture of methane, carbon dioxide, hydrogen and hydrogen sulphide, with methane about 75 % by volume.
Teacher's Note:
1. That is why biogas burns well without smoke.
(a) Silicon
(b) Carbon
(c) Lead
(d) Aluminium
Show Answer & Explanation
Answer: (a) Silicon
Explanation:
1. Solar cells use semiconductor materials, mainly silicon.
Teacher's Note:
1. Semiconductors lie between conductors and insulators.
(a) 0.7 %
(b) 10 to 15 %
(c) 50 %
(d) 90 %
Show Answer & Explanation
Answer: (b) 10 to 15 %
Explanation:
1. A solar cell converts only about 10 to 15 % of the sunlight falling on it into electricity.
Teacher's Note:
1. Early selenium cells were only about 0.7 % efficient.
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Download Chapter MCQs: Class 10 Physics Source of Energy
Chapter MCQs with Answers for Class 10 Physics
Test your conceptual understanding of Source of Energy with these targeted multiple-choice questions. Designed in alignment with the latest CBSE curriculum for Class 10 Physics, these problem sets build accuracy and prepare students for objective exams.
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FAQs
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Yes, our CBSE Class 10 Physics Source of Energy MCQs Set 16 include the latest type of questions, such as Assertion-Reasoning and Case-based MCQs. 50% of the CBSE paper is now competency-based.
By solving our CBSE Class 10 Physics Source of Energy MCQs Set 16, Class 10 students can improve their accuracy and speed which is important as objective questions provide a chance to secure 100% marks in the Physics.
Yes, Physics MCQs for Class 10 have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused CBSE exams.
Yes, you can also access online interactive tests for CBSE Class 10 Physics Source of Energy MCQs Set 16 on StudiesToday.com as they provide instant answers and score to help you track your progress in Physics.