Types of Coal

Q. Lamp black is–

1. an amorphous form of carbon
2. a cluster of carbon atoms
3. a crystalline form of carbon
4. a pure form of carbon

Q. How the coal tar is used for perfumes, but you said that it gets unpleasant or very bad smell?
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Q. Anthracite is the grade of coal that has the lowest carbon content.

1. True
2. False

Q.

What is lignite? How is it used?

Q.

Choose the correct alternative :

(a) Anthracite is

(i) an inferior type of coal

(ii) a superior type of coal

(iii) the cheapest form of coal

(iv) none of the above

(b) Destructive distillation of coal yields

(i) coal tar

(ii) coal gas

(iii) coke

(iv) all of the above

(c) Lamp black is

(i) an amorphous form of carbon

(ii) a crystalline form of carbon

(iii) a pure form of carbon

(iv) a cluster of carbon atoms

(d) The process by which decayed plants slowly convert into coal is called

(i) petrification

(ii) carbonisation

(iii) carbonification

(iv) fermentation

(e) The purest form of the amorphous carbon is

(i) wood charcoal

(ii) sugar charcoal

(iii) bone charcoal

(iv) lamp black

Q.

Write short notes on the following.

Coal

Q.

Characteristics of anthracite

Q.

Name the major types of coal and the percentage of carbon in them.

Q. Arrange the types of coal in the decreasing order of energy released by them.

1. Anthracite
2. Bituminous
3. Sub bituminous
4. Lignite

Q. Anthracite is the grade of coal that has the lowest carbon content.

1. True
2. False

Q.

What is coal?

Q. On the basis of quantity obatined, arrange the products of distillation in the increasing order.

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

Q.

Which of the following are the different types of coal?

1. Anthracite

2. Peat

3. Lignite

4. All of the above

Q. Among the following four types/grades of coal, which has the highest carbon content?

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

Q. I is the best type of coal and it is used in II. Choose the correct match.

1. I Anthracite
   II primarily for electrical power generation and in the steel industry.
2. I Bituminous coal
   II electrical power generation and in the steel industry.
3. I Anthracite
   II domestic fuel in either hand-fired stoves or automatic stoker furnaces.
4. I Lignite
   II electricity generation , synthetic natural gas generation and fertilizer products production .

Q.

Charcoal is -

1. Crystalline carbon

2. Amorphous carbon

3. both of these

4. None of these

Q.

The dark fibrous material created when the decomposition of dead plants and trees fail to keep pace with the production of organic matter is known as:

1. Peat

2. Coal

3. Erosion

4. Petroleum

Q.

What is/are the parameter(s) for classifying coals?

1. Weight of coal

2. Moisture content of coal

3. Carbon content

4. Colour of coal

Q. Pick out the correct pair of type of coal with its nature.

1. Lignite
2. Dull black
3. Hardest coal
4. Bituminous
5. Anthracite
6. Sub bituminous
7. Soft coal
8. Least energy

Q.

Gas carbon is not a gas. It deposits on the walls of retort when a hydrocarbon is heated in it in the absence of air Pankaj Singh

Q. Coal mainly contains
(a) carbon.
(b) carbon and hydrogen.
(c) carbon, hydrogen and nitrogen.
(d) carbon, nitrogen and oxygen.

Q. Lignite, bituminous and anthracite are different ranks of:

1. natural gas
2. coal
3. Nuclear fuel
4. bio gas

Q.

Mahima was looking at one of the samples kept in a type of coal display. One of the samples intrigued her very much. It looked "brownish-black organic material and almost looked like decayed wood". Could you help her identify the sample?

1. Ignite

2. Bituminous

3. Peat

4. Anthracite

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Explain the use of coal

Q. Pick out the correct pair of type of coal with its nature.

1. Soft coal
2. Hardest coal
3. Lignite
4. Bituminous
5. Dull black
6. Least energy
7. Sub bituminous
8. Anthracite

Q.

What are green house gases?

Q.

The increasing order of hardness of various kinds of coal is

1. Lignite < Sub-bituminous < Bituminous < Anthracite

2. Anthracite < Bituminous < Sub-bituminous < Lignite

3. Bituminous < Sub-bituminous < Anthracite < Lignite

4. Sub-bituminous < Bituminous < Lignite < Anthracite

Q.

What do you understand by the term greenhouse effect?

Q. Which of the following form of coal is used as a lubricant?

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

Q. Arrange the following in the asending order with respect to the percentage of carbon present.
$\begin{array}{cc}A& Lignite\\ B& Anthracite\\ C& Peat\\ D& Bituminous\end{array}$

1. B > D > A > C
2. B > D > A > C
3. D > A > B > C
4. D > A > C > B