Conventional Sources of Energy

Q. What is meant by conventional sources of energy? Write the names of two conventional sources of energy.

Q.

The purest form of coal is __________.

Q.

Why do petroleum and coal need to be used carefully? Are they non-renewable?

Q.

What is degraded energy?

Q.

Is soul is an energy?

Q. The energy possessed by fossil fuels such as coal and petroleum is called ___ energy.

1. mechanical
2. chemical
3. nuclear
4. thermal

Q.

What do you mean by replenishable resources?

Q.

What does energy degradation mean?

Q.

What is meant by a non-renewable source of energy? Give two examples of non-renewable sources of energy.

Q.

Electricity produced when water falls from a height is called____________energy.

Q.

Electricity produced from water is called _____________.

Q.

What is the main source of energy on earth?

Q.

Define energy degradation. Write two examples of energy degradation.

Q.

The energy possessed by fast-moving water is called hydro energy.

1. sun

2. wind

Q.

Name the best type of coal.

Q.

(a) Classify the following into renewable and non-renewable sources of energy:
Coal, Wind, Tides, Petroleum, Wood, Natural gas
(b) What is the basis of above classification?

Q.

lignite bituminous and anthracite are different ranks of

Q.

How are fuels such as coal and petroleum formed?

Q.

What are Conventional sources of energy?

1. sources of energy which are non-renewable

2. sources of energy which are being used since long time

3. both a and b

4. none of above

Q.

Bituminous coal is the finest quality of coal.

1. True
2. False

Q. Define:

Q.

The fuel used in thermal power plants is:

1. fossil fuel

2. water

3. uranium

4. biomass

Q. What is meant by 'energy crisis'?

1. Impending danger of total exhaustion of fossil fuels like coal and petroleum
2. Shortage of the thermal power
3. Malnutrition leading to short supply of energy in the human body
4. Shortage of hydro-electricity

Q. Question 2
Why are we looking at alternate sources of energy?

Q. An example of non-renewable resource is _________.

1. Coal
2. Water
3. Wood
4. Hydroelectricity

Q.

The non-renewable source of energy among the following is :
(a) hydroelectricity (b) sewage gas (c) natural gas (d) gobar gas

Q. Which of the following is the most common source of heat energy in ancient times?

1. Crude oil
2. Coal
3. Wood
4. Natural gas

Q. The heat produced on complete combustion of 10 g of a fuel could raise the temperature of 2.5 kg of water from ${40}^{\circ }C$ to${80}^{\circ }C$. Calculate the calorific value of fuel, if the specific heat capacity of water was $4.2J/g^{\circ }C.$

1. 
   $84kJ/g$
2. 
   $42kJ/g$
3. 
   $21kJ/g$
4. 
   $42J/g$

Q. Which of the following variety of coal contains the highest percentage of carbon?

1. Anthracite
2. Peat
3. Lignite
4. Bituminous

Q.

What are the different varieties of coal.