Destructive Distillation of Coal

Q.

Difference between coal and coke.

Q. Difference between carbonisation and coalification

Q.

The products obtained from destructive distillation of coal are:
1) Coal tar 2) Coal Gas 3) Coke 4) Ammonia
Arrange these products in the increasing order of their amounts produced.

1. 1 < 2 < 3 < 4

2. 1 < 3 < 4 < 2

3. 1 < 4 < 2 < 3

4. 4 < 1 < 3 < 2

Q. What is the nature of carbon dioxide gas?

1. Basic
2. Acidic
3. Neutral
4. Amphoteric

Q.

Heating of coal in the absence of air is known as:

1. destructive distillation

2. pyrolysis

3. carbonisation

4. fractional distillation

Q. Name the products obtained and their uses when coal is processed in industry.

Q.

What is Carbonization?

Q.

Identify the odd one out from the following:

Peat, Coal tar, Ammonia, Coke gas

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

Q.

Answer the following questions :

(a) What is destructive distillation? What are the products formed due to the destructive distillation of coal?

(b) Why are wood charcoal used in water filters and gas masks?

(c) How is wood charcoal made locally? What other substances are formed in the process?

(d) How many carbon atoms are there in Buckminster fullerenes?

Q.

The material A is a fossil fuel which is extracted from the earth. It is said to be formed from the buried large land plants by a very slow process B. When A is heated in the absence of air in a process called C then it gives three products, D, E and F. The product D is used as a reducing agent in the extraction of metals, the product E is used as and industrial fuel whereas the product F has been traditionally used for metalling the roads.

(a) What could material A be ?

(b) What is (i) physical state, and (ii) colour, of A ?

(c) Name the processes (i) B, and (ii) C.

(d) What are (i) D, (ii) E, and (iii) F ?

Q. A substance is heated in the absence of air and this results in the decomposition of the substance bearing a carbon –rich residue. This process is known as ___________.

1. destructive distillation
2. carbonization
3. allotropes
4. catenation

Q.

Which of the following is a product of coal?

1. Kerosene

2. Coke

3. Diesel

4. Bitumen

Q. What is destructive distillation? Explain the process, and reason why it is useful.

Q.

What is the major constituent of coal?

1. Nitrogen

2. Carbon

3. Oxygen

4. Hydrogen

Q.

What are the constituents of the producer gas?

1. Carbon dioxide & oxygen
2. Carbon monoxide & oxygen
3. Carbon dioxide & nitrogen
4. Carbon monoxide & nitrogen

Q. Zinc oxide reacts with charcoal to form:

1. zinc and hydrogen
2. zinc and carbon dioxide
3. zinc and water
4. zinc and carbon monoxide

Q.

On destructive distillation, $1000$ kg of coal gives $P$ kg of coke, $Q$ litres of ammonia, $R$ litres of coal tar and $S$ $m^3$ of coal gas. The value of $P,Q,R$ and $S$ respectively are

1. 400, 100, 50, 200

2. 700, 100, 50, 400

3. 700, 200, 100, 400

4. 700, 400, 100, 50

Q.

State whether true or false coal can be drawn into wires.

1. True
2. False

Q. Take a gas jar, fill it with hydrogen sulphide gas. Hydrogen sulphide smells like rotten eggs. Put some charcoal pieces in the jar and close the lid. Shake the jar and leave it for few minutes. Then remove the lid. You will notice that there is no smell in the jar. This proves that _______ is good absorbent.

1. charcoal
2. coke
3. graphite
4. coal

Q. Coke is used in the manufacture of synthetic petrol.

1. False
2. True

Q.

Name the following

The process of conversion of wood into coal

Q.

characteristics of lignite

Q.

Which of the following are obtained by destructive distillation of coal?

1. Lamp Black

2. Coke

3. Coal Tar

4. Coal gas

Q. Shamli took a piece of burning charcoal and collected the gas evolved in a test tube.The gas settled at the bottom of the test tube.Which of the following observations is correct?

1. Gas evolved is acidic & heavier than air.
2. Gas evolved is basic & heavier than air.
3. Gas evolved is basic & lighter than air.
4. Gas evolved is acidic & lighter than air.

Q. What is destructive distillation of coal? What are the products of destructive distillation of coal?

Q. A piece of charcoal is burnt and kept in watch glass. The burning charcoal is covered by an inverted gas jar. It is observed that the charcoal stop burning after some time. Take out the jar and add some water to it. Test the solution with red and blue litmus paper. What do you observe?

1. Solution turn red litmus blue, hence, the oxide form by burning of charcoal was basic oxide
2. Solution turn blue litmus red, hence, the oxide form by burning of charcoal was acidic oxide
3. Solution turn blue litmus red, hence, the oxide formed by burning charcoal was basic oxide
4. Solution does not change the colour of litmus paper, hence, the oxide formed by burning charcoal was neutral

Q. Name the products obtained and their uses when coal is processed in industry.​

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

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

Q. Shamli took a piece of burning charcoal and collected the gas evolved in a test tube.The gas settled at the bottom of the test tube.Which of the following observations is correct?

1. Gas evolved is acidic & heavier than air.
2. Gas evolved is basic & heavier than air.
3. Gas evolved is basic & lighter than air.
4. Gas evolved is acidic & lighter than air.

Q.

Which of the following are the products obtained from coal?
1) Coal tar
2) Petrol
3) Coal gas
4) Ammonical liquor
5) Paraffin wax
6) Coke

1. 1, 3, 4, 6

2. 1, 3, 4, 5

3. 1, 2, 4, 6

4. 1, 2, 3, 4