Tag: rocks and minerals

Questions Related to rocks and minerals

Which petroleum product is used for surfacing of roads?

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

  1. Paraffin wax

  2. Lubricating oils

  3. Bitumen

  4. Coal tar

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Correct Option: C

Coal and petroleum are called fossil fuels.

State whether the statement is True or False

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

  1. The statement is True

  2. The statement is False

  3. Neither

  4. Coal and petroleum are called natural fuels.

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Correct Option: A
Explanation:

Coal and petroleum are called fossil fuels. They serve as source of energy as on combustion, they release heat energy.

Synthetic petroleum is artificially produced from coal:

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

  1. True

  2. False

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Correct Option: A
Explanation:



Synthetic fuel is a liquid fuel which is obtained by the gasification of solid coal or biomass. 

The main constituent of petroleum gas is ethane:

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

  1. True

  2. False

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Correct Option: B
Explanation:
The main constituents of petroleum gas is butane.

The gas oil fraction of petroleum has the highest boiling point?

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

  1. True

  2. False

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Correct Option: A
Explanation:

Gas oil or commonly known as fuel oil has the highest boiling point upto 350 degree celsius.Gasoline on the other hand has the lowest boiling point.

Rocket fuel is:

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

  1. Ammonium phosphate

  2. Liqiud oxygen

  3. Liqiud ammonia

  4. Solid $KCl$

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Correct Option: B
Explanation:

Liquid -fuel rockets most commonly use liquid oxygen and either kerosene or liquid hydrogen. These combinations work well in space and down closer to the ground.

The strong smelling substance added to LPG is:

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

  1. ethyl mercaptan

  2. ethanol

  3. ethanal

  4. ethyl butane

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Correct Option: A
Explanation:

LPG gas is basically propane and butane, and it is odorless in its natural state. The smell that you notice when there is a leak is actually the stench of an entirely different agent, called ethyl mercaptan ($C _2H _6S$). This substance is added to the gas when it leaves the main storage terminals.

The chemical added to LPG to help detect its leakages is:

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

  1. isobutene

  2. ethylamine

  3. methyl mercaptan

  4. ethyl mercaptan

Show answer
Correct Option: D
Explanation:

LPG gas is basically propane and butane, and it is odorless in its natural state. The smell that you notice when there is a leak is actually the stench of an entirely different agent, called Ethyl Mercaptan (C2H6S). This substance is added to the gas when it leaves the main storage terminals.

The main constituent of LPG is:

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

  1. methane

  2. butane

  3. propane

  4. both B and C

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Correct Option: D
Explanation:

LPG constitutes both propane and butane in equal percentages.
Liquefied Petroleum Gas or LPG (also called Autogas) consists mainly of propane, propylene, butane, and butylene in various mixtures. It is produced as a by-product of natural gas processing and petroleum refining. The components of LPG are gases at normal temperatures and pressures.

What odorant is added to LPG to detect the leakage with smell?

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

  1. alcohol

  2. organo sulphur compounds

  3. coal tar

  4. chlorine gas

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Correct Option: B
Explanation:

As LPG is odourless and the organo-sulphur compound has an unpleasant smell.


Hence, to detect the leakage, ethyl mercaptan (ethanethiol) is added to LPG which is an organo-sulphur compound.

Therefore, option B is correct.