Coal Formation

Q.

What type of rock is coal?

1. Igneous rock

2. Sedimentary rock

3. Hardest rock

4. Plant rock

Q.

Coal is a fossil fuel and it cannot be prepared in a laboratory or industry because the formation of coal:
A. Is a very slow process
B. Needs very low pressure and low temperature
C. Needs very high pressure and high temperature
D. Causes air pollution
Select the correct statement.

1. A and B

2. A and C

3. B and D

4. D and C

Q. Write the characteristics and some important uses of coal.

Q.

Under high temperature and pressure, dead plants get slowly converted to coal.

1. True
2. False

Q. Question 8
Which substance is formed by the carbonization of dead vegetation?

(a) Coal
(b) Coke
(c) Coal gas
(d) Coal tar

Q. Coal is formed from the remains of

1. vegetation only
2. animals only
3. both vegetation and animals
4. neither vegetation nor animals

Q. Coal is an example of _______ natural resource.

1. exhaustible
2. inexhaustible
3. non-conventional
4. renewable

Q.

Carbon Dioxide is added to the atmosphere by the decay of organic matter.

1. True

2. False

Q.

What is formed in the second stage during the formation of coal?

1. Bituminous

2. Anthracite

3. Lignite

4. Peat

Q. Fossil fuels are exhaustible natural resources.

1. True
2. False

Q. Write the characteristics and some important uses of coal.​

Q.

Different stages of coal?

Q.

Which of the following is an example of exhaustible resources?

1. Wind

2. Sunlight

3. Coal

4. Geothermal energy

Q.

Name the following:

Formation of coal from matter under the earth at high temperature and pressure.

Q. Describe how coal is formed from dead vegitation. What is this process named

Q. What is the product obtained at last stage in the formation of coal?

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

Q.

If sulphur content is high what is the grading for coal?

1. Has no effect on coal grades

2. Lowers the coal grade

3. Improves the ash quality

4. Improves the coal grade

Q.

Assertion: Carbon dioxide is used in fire extinguishers.

Reason: Carbon dioxide is a colourless and odourless gas.

1. The assertion is false but the reason is true.

2. Both assertion and reason are true and the reason is the correct explanation for the assertion.

3. Both assertion and reason are true but the reason is not the correct explanation for the assertion.

4. The assertion is true but the reason is false.

Q. The chief coal bearing formation in India is known as the __________.

1. Siwaliks
2. Gondwanas
3. Vindhyans
4. Cuddappahs

Q. Which of these resources are in the danger of getting depleted with use?

1. Coal
2. Petroleum
3. Both a and b
4. None of these

Q. The conditions required for peat formation are:

1. Water logging
2. Lack of oxygen and nutrients
3. High basicity and high temperature.
4. High acidity and low temperature.

Q. Coal is mainly found in which rocks?

1. Sedimentary
2. Igneous
3. Metamorphic
4. None of these

Q. Which of the following favours the formation of coal?

1. Physical alterations of peat.
2. Chemical alterations of peat.
3. Nuclear alterations of peat.
4. Both physical and chemical alterations of peat.

Q. _______ is formed by the carbonisation of dead vegetation.

1. Coke
2. Coal gas
3. Coal tar
4. Coal

Q. Peat coal is an example of liquid fuel.

1. True
2. False

Q. What is the product obtained at last stage in the formation of coal?

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