Natural Resources

Q.

Types of coal

Q.

Explain how water becomes a renewable resource.

Q. Which of the following is a non-renewable resource?

1. Coal
2. Water
3. Air
4. Sun

Q.

Name two gases supplied in homes and hospitals in compressed form.

Q. Question 3
Which of the following is a pair of exhaustible natural resources?

(a) coal and soil
(b) air and sun-light
(c) water and petroleum
(d) wild life and minerals

Q.

Why are alternate sources of energy important?

Q.

Coal and petroleum are examples of _________ natural resources.

1. exhaustible

2. renewable

3. non-conventional

4. inexhaustible

Q. Sunlight and air are inexhaustible natural resources. Comment.​

Q. Resources which are unlimited and are not affected by human activities are called resources.

1. biotic
2. abiotic
3. renewable
4. non-renewable

Q.

Which one of the following is an inexhaustible natural resource ?

(a) coal

(b) petroleum

(c) water

(d) forests

Q. Water is an exhaustible natural resource.

1. True
2. False

Q. Dead organisms are transformed into petroleum and natural gas in the:

1. presence of sunlight
2. absence of organic matter
3. absence of air
4. presence of air

Q.

There are natural resources which will never get depleted.

1. True

2. False

Q. Question 16
Fill in the blanks in the following sentences.
(a) Coal is one of the ___ used to cook food.
(b) When heated in air, coal burns and produces mainly ___ gas
(c) Coal tar is a black, thick ___ with an ___ smell.
(d) Petroleum, ___ and ___ are fossil fuels.
(e) Forests and coal are ___ natural resources

Q.

When air is contaminated by ________ substances which have a ________ effect on both the ________ and ________, it is referred to as ________. (air pollution, harmful, living, unwanted, non-living, pollutants).

Q. Why is hydrogen not used as a domestic fuel even though it has the highest calorific value ?

1. It is cheap and easily available
2. It is easy to store
3. It is highly explosive
4. It is safe to handle

Q. If a resource can be replaced within 10 years by natural processes, would you classify it as renewable or non -renewable ?

Q.

What is a natural resource?

Q.

(a) What is meant by inexhaustible natural resources ? Name two inexhaustible natural resources.

(b) What is meant by exhaustible natural resources ? Name any two exhaustible natural resources.

Q.

What are exhaustible natural resources? Give 4 examples. [3 MARKS]

Q.

The fossil fuels, coal and petroleum are the examples of _________ natural resources.

1. Renewable

2. Vanished

3. Inexhaustible

4. Exhaustible

Q.

Some natural resources are given in a box. Classify them into the exhaustible and inexhaustible natural resources.​

Air, coal, natural gas, sunlight, petroleum, minerals, forests, oxygen.​

Q.

Chlorine is used in municipal water treatment plant to:

1. change the taste of water

2. prevent evaporation

3. kill the harmful micro-organisms

4. prevent sedimentation

Q. Question 21
Some natural resources are given below. Classify them into the exhaustible and inexhaustible natural resources.
Air, sunlight, oxygen, coal, natural gas, petroleum, minerals, forests.

Q.

Compare and contrast fossil fuels and the sun as direct sources of energy.

Q.

The acid present in acid rain dissolves _______ metals such as Al, Mn, Pb, Zn, etc.

Q. energy sources are naturally replenished.

1. Renewable
2. Non-renewable
3. Conventional

Q.

The output frequency of the wind turbine is 50 Hz. What is meant by this statement?

Q.

Explain Non-Renewable Energy.

Q. The main component of coal is .

1. carbon
2. nitrogen
3. oxygen