Tag: rocks and minerals

Questions Related to rocks and minerals

The final product in the following reaction can be used as, $4CH _3-CH _2-Cl+4Na+Pb \rightarrow$

chemistry petrochemicals and polymers petroleum properties of alkanes petroleum and natural gas rocks and minerals

  1. anaesthatic

  2. narcotics

  3. analgesic

  4. antiknocking agent

Show answer
Correct Option: D
Explanation:

  • The final product of this reaction is $(CH _3CH _2) _4Pb$ [tetraethyl lead (TEL)].
$4CH _3-CH _2-Cl + 4Na + Pb \rightarrow (CH _3CH _2) _4Pb$
It is also used as an antiknocking agent in fuels for automobiles.

The petroleum product that has replaced coal-tar for metalling the road is __________.

chemistry rocks and minerals coal and its products study of coal coal

  1. peat

  2. bitumen

  3. lignite

  4. anthracite

Show answer
Correct Option: B
Explanation:
Bitumen is an oil-based substance. It is a semi-solid hydrocarbon product produced by removing the lighter fractions (such as liquid petroleum gas, petrol, and diesel) from heavy crude oil during the refining process. 

As such, it is correctly known as refined bitumen. It is used as a road paving material. The vast majority of refined bitumen is used in construction: primarily as a constituent of products used in paving and roofing applications. According to the requirements of the end-use bitumen is produced to specification.

So, the correct option is $B$

Coal can be formed from ____________.

chemistry rocks and minerals coal and its products study of coal coal

  1. sunlight

  2. steam

  3. fossils

  4.  plants

Show answer
Correct Option: C
Explanation:

When dead plants get buried into the bottom of the soil they are slowly converted into coal due to high pressure and high temperature. Heat and pressure produced chemical and physical changes in the plant layers which forced out oxygen and left rich carbon deposits. In time, material that had been plants became coal.

Coal is formed from plants and animals that died millions of years ago.

Coal can be drawn into thin wire.

chemistry rocks and minerals coal and its products study of coal coal

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Coal is neither malleable nor ductile. It is brittle. It would crumble if it is  tried to draw it into a wire.

Hence, it's false

The characteristic of coal is ___________.

chemistry rocks and minerals coal and its products study of coal coal

  1. toughness

  2. black in colour

  3. porous nature

  4. all of these

Show answer
Correct Option: D
Explanation:

Since coal is a form of sedimentary rock, it's is hard and porous. It is black due to its prime composition of carbon, compressed at high temperature and pressure.

Which of the following is not characteristic of coke?

chemistry rocks and minerals coal and its products study of coal coal

  1. Hard

  2. Porous

  3. High carbon content

  4. Soft

Show answer
Correct Option: D
Explanation:
Coke is a tough, porous and black substance. It is the purest form of carbon. Coke is used in the homes for cooking, heating and in industries, for manufacturing of steel and extraction of many metals. It is also used in thermal power plants to produce electricity.
Hence, option D is the correct option

Which derivative of coal is more viscous in nature?

chemistry rocks and minerals coal and its products study of coal coal

  1. Coke

  2. Coal tar

  3. Coal gas

  4. Graphite

Show answer
Correct Option: B
Explanation:

Coal tar is basically seen as very thick liquid used in making roads. Hence it is more viscous in nature than coal.

What is used in manufacturing of steel?

chemistry rocks and minerals coal and its products study of coal coal

  1. Coal

  2. Coal tar

  3. Coke

  4. Glass

Show answer
Correct Option: C
Explanation:

Coke is used in the manufacture of steel and extraction of many metals.

Naphthalene balls are obtained from:

chemistry rocks and minerals coal and its products study of coal coal

  1. coke

  2. plants

  3. coal tar

  4. petroleum

Show answer
Correct Option: C
Explanation:

Naphthalene is industrially prepared from coal tar. 

Which is the source of more number of industrial products?

chemistry rocks and minerals coal and its products study of coal coal

  1. Kerosene

  2. Coal tar

  3. Coke

  4. Natural gas

Show answer
Correct Option: B
Explanation:

Coal tar is used in producing industrially dyes, paints, photographic plates etc.