Tag: rocks and minerals

Questions Related to rocks and minerals

Which of the following is basic compound present in coal tar?

  1. Quinoline

  2. Benzene

  3. Toluene

  4. Phenol


Correct Option: A
Explanation:

Quinoline is basic compound present in coal tar. Other basic compound present in coal tar is pyridine. 

Benzene and toluene are neutral compounds. 
Phenol is acidic compound.

The main constituent of coal is:

  1. carbon

  2. oxygen

  3. air

  4. water


Correct Option: A
Explanation:

The main constituent of coal is $carbon$,

State whether the given statement is true or false:

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

  2. False


Correct Option: A
Explanation:

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

From where mineral coal is obtained in Gujarat?

  1. Ankleshwar

  2. Khambat

  3. Thangadh

  4. Kalol


Correct Option: C
Explanation:

In Gujarat, near Thangadh in Saurashtra district, sulphur-containing mineral coal deposits are present.

Coal mining has been known, since :

  1. 1750 A.D.

  2. 675 A.D.

  3. Roman times

  4. Mediaeval times


Correct Option: C
Explanation:

In Roman Britain, the Romans were exploiting all major coalfields by the late 2nd century AD. While much of its use remained local, a lively trade developed along the North Sea coast. This also extended to the continental Rhineland, where bituminous coal was already used for the smelting of iron ore. After the Romans left Britain, in AD 410, there are few records of coal being used in the country until the end of the 12th century.

Coal is a sedimentary rock formed from plants that died a millions of years ago.
  1. True

  2. False

  3. Neither

  4. Either


Correct Option: A
Explanation:

Coal is a sedimentary rock formed from plants that died millions of years ago.

As more and more layers of dead plants and animals got deposited on them, due to heat and pressure they changed to form coal.

Hence, option (A) is the correct answer.

Coal, natural gas and petroleum are examples of_________.

  1. fossils

  2. natural resources

  3. artificial resources

  4. fuels


Correct Option: A,B,D
Explanation:

Coal, natural gas and petrolium are examples of natural resources which are found as fossils beneath the surface of earth and act as sources of fuel.

The precursor of coal is:

  1. peat

  2. lignite

  3. anthracite

  4. graphite


Correct Option: A
Explanation:

Peat is considered as the precursor of coal. Peat is used industrially sometimes for the purpose of fuel.

What are the conditions required for the formation of coal?

  1. High temperature

  2. High pressure

  3. Low temperature

  4. Low pressure


Correct Option: A,B
Explanation:

High temperature and high pressure are required for the formation of coal. When dead vegetation got buried under the soil, they were compressed under the deposited soil. Carbon got trapped in them. High temperature and pressure then converts these dead vegetation to coal.

Coal is formed from:

  1. dead animals

  2. dead vegetation

  3. both of the above

  4. none of the above


Correct Option: B
Explanation:

Coal is obtained from dead vegetation or dead natural forests. The forests got buried under the soil, and then more soil got deposited over them. These forests got compressed under the soil and then carbon got trapped in it. High temperature and pressure convert these dead vegetation to coal.