Conventional Sources of Energy

Q.

What are the two examples of nuclear energy?

Q.

Electric motor converts:

1. Mechanical energy into electrical energy

2. Mechanical energy into heat energy

3. Electrical energy into heat energy

4. Electrical energy into mechanical energy

Q.

Which of the following is the lightest and most volatile liquid fuel?

1. Gasoline

2. Kerosene

3. Fuel Oil

4. None Of These

Q.

A liquid fuel, used in homes is .

Q.

Differentiate between:

Solid fuels and Liquid fuels.

Q.

What are energy and its types?

Q.

What are the different types of electric power stations?

Q.

Solar cell is used to convert which type of Energy?

Q.

State the energy transformation in the following :

(i) electricity is obtained from solar energy.

(ii) electricity is obtained from wind energy.

(iii) electricity is obtained from hydro energy.

(iv) electricity is obtained from nuclear energy.

Q. How much solar energy will be received by 1 square metre area on earths atmosphere in one hour if the Solar constant were 1.4 Kilowatt per square metre? (assume the rays are falling perpendicular to the Earths atmosphere)

Q.

Which of the following is a non-renewable energy resource?

1. Sun

2. Methane

3. Hydroelectricity

4. Coal

Q.

Which one of the following minerals is contained in the Monazite sand?

1. Oil

2. Uranium

3. Thorium

4. Coal

Q.

Select the renewable and non-renewable sources of energy from the following :

(a) Coal (b) Wood (c) Water

(d) Diesel (e) Wind (f) Oil

Q. The commercial unit of energy consumption in households, industries and commercial establishments is:

1. Joule
2. Watt
3. kW
4. kWh

Q. Give three examples in order to explain tha solar energy is used in different forms.(transformation of energy related question)

Q.

Differentiate between: Liquid fuels and gaseous fuels.

Q.

66 The ……. makes the windmill rotate.

Q.

Name the two groups in which various sources of energy are classified. State on what basis are they classified.

Q. Which of the following energy sources is a renewable source of energy?

1. Coal
2. Ocean current
3. Natural gas
4. Petroleum

Q.

The fuel used in blast furnaces is ___.

Q.

The fuels which are prepared from natural fuels by various physical and chemical processes are known as _________.

Q. Why is Charcoal considered better fuel than wood ?
Write 1 disadvantages of converting wood into Charcoal.

Q. Can solar energy be called thermal energy?
Is solar energy thermal energy?

Q.

Which of the following resources is exhaustible?

1. nuclear energy

2. fossil fuels

3. wind energy

4. hydro energy

Q.

Which of the following is the best option for cooking fuel?

1. Wood

2. Cow-dung cake

3. LPG

4. Kerosene

Q.

India ranks first in harnessing wind energy to produce electricity.

1. True
2. False

Q. Match the following:
$\begin{array}{cc}\text{Objects}& \text{Energy Conversions}\\ \text{1. Bicycle}& \text{a. Sun's energy to electrical energy}\\ \text{2. Engine}& \text{b. Muscular energy to mechanical energy}\\ \text{3. Wind turbine}& \text{c. Heat energy to mechanical energy}\\ \text{4. Solar panel}& \text{d. Wind energy to electrical energy}\end{array}$

1. 1-b, 2-c, 3-d and 4-a
2. 1-c, 2-a, 3-d and 4-b
3. 1-c, 2-b, 3-d and 4-a
4. 1-b, 2-c, 3-a and 4-d

Q. Why can't LPG gas be used in automobiles ?

Q.

State one important advantage and disadvantage of using nuclear energy for producing electricity.

Q.

Why fossil fuels should be used judiciously?