# Sources of Energy MCQ Objective questions

Sources of Energy MCQ Objective questions Class 10 Science Chapter 14 NCERT

#### 1. Energy remains conserved during a physical and chemical reaction. Then why we still keep on finding new sources of energy?

• a. Though energy is conserved, it is not always convertible.
• b. A chemical reaction reduces energy output.
• c. The storage of energy is not economical.
• d. None.

#### 2. A hydroelectric dam use _ _ _ _ energy of stored water to generate electrical power.

• a. Kinetic energy
• b. Nuclear energy.
• c. Potential energy.
• d. None.

#### 3. When we burn a candle, we use _ _ _ _  energy of wax to get light and heat energy.

• a. Electrical energy.
• b. Chemical energy.
• c. Potential energy.
• d. Kinetic energy.

#### 4. A reaction is exothermic when we get _ _ _ _ _ energy from the reaction.

• a. Heat energy.
• b. Chemical energy.
• c. Electrical energy.
• d. Kinetic energy.

• a. Yes.
• b. No.

#### 6. Where the energy of a candle go afterburning?

• a. Dissipated in the environment.
• b. Converted into the mass.
• c. Converted into heat.
• d. A and C both as heat and light energy of a candle, later goes to the environment.

• a. 0ºK
• b. 0ºF
• c. 273ºK
• d. None.

#### 8. Formula for converting ºC  to ºK is:

• a. ºK = ºC + 275ºC
• b. ºK = ºC + 273ºC
• c.  ºK = ºC
• d. ºK = ºC – 273ºC

#### 9. Formula for converting ºC  to ºF is:

• a. 9/5 ºC  = ºF – 32
• b. ºC  = ºF
• c. ºF = ºC + 275ºC
• d. none.

• a. -198ºC
• b. 0ºC
• c. -273ºC
• d. None.

#### 11. A good fuel is:

• a. Cheap.
• b. Easily available.
• c. Clean.
• d. All.

#### 12. India depends mostly on _ _ _ _ to meet its energy demand.

• a. Coal.
• b. Hydroelectric dam.
• c. Nuclear power.
• d. Petroleum and natural gas.

#### 13. Clean fuel means a fuel that:

• a. look tidy.
• b.can be filtered off.
• c. is non-polluting.
• d. None.

#### 14. A thermoelectric plant converts _ _ _ _ _ energy of coal into electrical energy.

• a. Chemical.
• b. Potential.
• c. Heat.
• d. None.

#### 15. Following is an example of biomass fuel.

• a. broken twigs and branches of a tree.
• b. Cow dung.
• c. Crop residue.
• d. All.

#### 16. Bio-mass is a _ _ _ _ fuel while biogas produced from it is a _ _ _ _ fuel.

• a. Polluting, clean.
• b. Highly efficient, non-efficient.
• c. Low efficient, High efficient
• d. a and c both.

#### 17. Following is/are examples of renewable energy:

• a. Wind energy.
• b. Hydro energy.
• c. Solar energy.
• d. All of the above.

#### 18. Country of winds is :

• a. Netherland.
• b. Denmark.
• c. Cambodia.
• d. Switzerland.

#### 19. Why we consider solar energy as a renewable source of energy.

• a. Sun will provide energy for billions of years from now.
• b. Sun is a permanent celestial body.
• c. It is not considered renewable.
• d. None.

#### 20. Ocean thermal energy use the following principle::

• a. There is a temperature difference between the surface of ocean water and deep water.
• b. The heat produced from the volcano situated under the sea.
• c. The thermal energy of ocean water.
• d. None.