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Sources of Energy Science - Sources of Energy

CBSE - STD 10 - Science (CBSE - English Medium). 498 questions in this chapter.

Question types

Sources of Energy question types

498 questions across 9 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

498
Questions
9
Question groups
5
Question types
Sample Questions

Sources of Energy questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q1 Mark
A nuclear fission reaction can be differentiated from a nuclear fusion reaction by.
  • A
    Evolution of enormous energy.
  • B
    Chain-reaction nature of the reaction involved.
  • ✓
    Disintegration of heavy nucleus into smaller nuclei.
  • D
    Both are identical reactions.

Answer: C.

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Q 2M.C.Q1 Mark
Polluted air leads to :
  • ✓
    Ailment in lungs, skin and eyes
  • B
    Good health
  • C
    Ease in breathing
  • D
    None of the above

Answer: A.

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Q 3M.C.Q1 Mark
The fuel which is not used at thermal power plants is :
  • A
    Coal.
  • ✓
    Uranium.
  • C
    Natural gas.
  • D
    Fuel oil.

Answer: B.

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Q 4M.C.Q1 Mark
Solar cells are made of :
  • A
    Conductors.
  • B
    Insulators.
  • ✓
    Semi $-$ conductors.
  • D
    Super $-$ conductors.

Answer: C.

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Q 5M.C.Q1 Mark
Energy potential from various sources of sea is $ .......... $  Efficient commercial exploitation of same is $ ........ : $
  • A
    Small, difficult
  • ✓
    Large, difficult
  • C
    Small, easy
  • D
    Large, easy

Answer: B.

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Q 6Assertion - Reasoning (1 Marks)1 Mark
In the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as :
Assertion : Concave mirror is best suited for use in a solar cooker.
Reason : Concave mirror converges large amount of light of the sun into the solar cooker.
  • ✓
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • B
    If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
  • C
    If Assertion is true, but Reason is false.
  • D
    If Assertion is false, but Reason is true.

Answer: A.

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Q 7Assertion - Reasoning (1 Marks)1 Mark
In the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as :
Assertion : The hydrogen bomb is more harmful than nuclear fission.
Reason : Nuclear fusion produce more energy than nuclear fission.
  • ✓
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • B
    If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
  • C
    If Assertion is true, but Reason is false.
  • D
    If Assertion is false, but Reason is true.

Answer: A.

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Q 8Assertion - Reasoning (1 Marks)1 Mark
Two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion $(A) :$ In the process of nuclear fission, the amount of nuclear energy generated by the fission of an atom of uranium is so tremendous that it produces $10$ million times the energy produced by the combustion of an atom of carbon from coal.
Reason $(R) : $ The nucleus of a heavy atom such as uranium, when bombarded with low energy neutrons, splits apart into lighter nuclei. The mass difference between the original nucleus and the product nuclei gets converted to tremendous energy.
  • ✓
    Both $A$ and $R$ are true, and $R$ is correct explanation of the assertion.
  • B
    Both $A$ and $R$ are true, but $R$ is not the correct explanation of the assertion.
  • C
    $A$ is true, but $R$ is false.
  • D
    $A$ is false, but $R$ is true.

Answer: A.

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Q 9Assertion - Reasoning (1 Marks)1 Mark
In the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as :
Assertion : Solar cells are used to convert solar energy into electrical energy.
Reason : The radiant heat present in solar energy does not change into electrical energy.
  • A
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • B
    If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
  • ✓
    If Assertion is true, but Reason is false.
  • D
    If Assertion is false, but Reason is true.

Answer: C.

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Q 15True-False1 Mark
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
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Q 16[1 Mark Questions]1 Mark
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy.
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Q 19[1 Mark Questions]1 Mark
Arrange the following fuels in the order of increasing calorific values (keeping the fuel with lowest calorific value first):
LPG, Coal, Alcohol, Dung cakes, Diesel
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Q 24[2 Mark Questions]2 Marks
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
  1. Name the substance X.
  2. How does substance X make the detection of leakage of LPG easy?
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Q 35[5 marks Questions]5 Marks
What are the environmental consequences of using fossil fuels? Suggest the steps to minimise the pollution caused by various sources of energy including non-conventional sources of energy.
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Q 36case /data -based (4 Marks)4 Marks
The diagram shows the formation of fossil fuels.

Image
7. What is the minimum time required for marine organisms to transform into fossil fuels?
A. Less than 100 million years
B. 100 - 200 million years
C. 200 - 300 million years
D. More than 300 million years
8. Name any three examples of fossil fuels.
9. How are the wastes discharged from a biogas plant reused?
A. As clay for pottery
B. As fuel for cooking
C. As food for animals
D. As manure for plants
10. Which of these is true about fossil fuels?
Circle ‘Yes’ or ‘No’ for correct response.

Is this statement true for fossil fuels?

Yes or No

Formation of fossil fuels requires heat and pressure.

Yes/No

Fossil fuels have no alternatives as energy source.

Yes/No

Fossil fuels are non-conventional source of energy.

Yes/No

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Q 37case /data -based (4 Marks)4 Marks
The picture shows how sunlight heats the water in a solar water heater.

Image
2. When will the solar water heater work most eficiently?
A. At noon under a clear sky
B. At noon under a cloudy sky
C. In the morning under a clear sky
D. In the morning under a cloudy sky
3. ²H + ²H → X + n
What is the formula for X in the given reaction?
4. Which type of energy is derived from the sea?
A. Tidal energy
B. Wind energy
C. Nuclear energy
D. Thermal energy
5. Which source of energy emits large amounts of greenhouse gases?
A. Sun
B. Coal
C. Wind
D. Water
6. Which of these statements is true about biogas?
Circle ‘Yes’ or ‘No’ for correct response.

Is this statement true about biogas?

Yes or No

It contains poisonous chemicals.

Yes/No

It contains 75% methane.

Yes/No

It is produced in the absence of oxygen.

Yes/No

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Q 40case /data -based (4 Marks)4 Marks
The calorific values of five fuels A, B, C, D and E are given below:
(A) 48kJ/ g
(B) 17kJ/ g
(C) 150kJ/ g
(D) 50kJ/ g
(E) 30kJ/ g
  1. Which of the fuels could be: (i) cooking gas (ii) alcohol (iii) wood (iv) hydrogen (v) kerosene?
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