Peat

Q.

How is peat formed?

Q.

How coal is formed ? What is the difference between coal and peat

Q. The decreasing order of moisture content for various kinds of coal is:

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

Q.

Characteristics of bituminous

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. Why can coal not be prepared in a laboratory?

Q. Order the following coals in ascending order of amount of carbon content.

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

Q.

How is peat formed?

Q. How does water logging aid in peat formation?

1. It limits the supply of oxygen and other nutrients.
2. It improves the supply of oxygen and other nutrients.
3. It acts as a catalyst in coal formation.
4. It has hydrogen ions which make the soil acidic.

Q. What is the percentage of free carbon in peat?

1. 10-15
2. 25-35
3. 50-55
4. 75-80

Q. Select the correct statement from the given:

1. Peat is an organic sediment.
2. Peat has a carbon content of between 60 and 70%
3. Peat is the most abundant rank of coal
4. Peat has a heating value between 8300 and 13000 British Thermal Units per pound on a mineral-matter-free basis.

Q.

Observe the pictures given alongside.

(a) Identify the varieties of coal .

(b) Write the percentage of carbon in each of them.

(c) Which of the coal is known as a household coal?

(d) Which of the coals has the least percentage of carbon ?

Q. What is the percentage of ash content in Indian coal?

1. 5%
2. 10%
3. 20%
4. 30%

Q. ___________ is a brownish-black coal with generally high moisture and ash content, and the lowest carbon content.

1. sub-bituminous
2. lignite
3. bituminous
4. anthracite

Q. Lignite is:

1. the hardest type of coal,
2. has the highest heating value and lowest moisture
3. low moisture and ash content
4. high moisture and ash content coal

Q.

The conditions required for peat formation are

1. water logging

2. lack of oxygen and nutrients

3. high acidity and low temperature

4. all of these

Q. ____________ is a grade between bituminous coal and anthracite.

1. steam coal
2. sea coal
3. both A and B
4. none of these

Q. How does water logging aid in peat formation?

1. It limits the supply of oxygen and other nutrients.
2. It improves the supply of oxygen and other nutrients.
3. It has hydrogen ions which make the soil acidic.
4. It acts as a catalyst in coal formation.

Q. What is pulverised coal?

1. Non smoking coal
2. Coal free from ash
3. Coal broken into fine particles
4. Coal which burns for long time

Q. Peat coal contains about _____ % carbon.

1. 78
2. 68
3. 28
4. 88

Q. The percentage of carbon in peat is:

1. 40%
2. 30%
3. 60%
4. 70%

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

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

Q. Which of the following will give off less heat per given unit weight?

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