Tag: coal

Questions Related to coal

Illuminating characteristics of kerosene is expressed by its:

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. aromatic content

  2. aniline point

  3. luminosity number

  4. smoke point

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Correct Option: C
Explanation:

Kerosene has been used for illumination since centuries. The capacity of kerosene to be illuminating depends on the luminosity number of kerosene. 

Glycol added to petrol act as an _______ agent.

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. anti-knocking

  2. anti-gum forming

  3. anti-icing

  4. dewaxing

Show answer
Correct Option: C
Explanation:

Glycol added to petrol acts as anti -icing agent

Anti -icing is a application of chemicals that not only de-ice, but also remain on a surface and continue to delay the reformation of ice for a certain period of time, or prevent adhesion of ice to make mechanical removal easier.

The boiling range of diesel is :

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. 300$^o$C to 350$^o$C.

  2. 400$^o$C to 450$^o$C.

  3. 400$^o$C to 550$^o$C.

  4. 200$^o$C to 450$^o$C.

Show answer
Correct Option: A
Explanation:

Diesel fuel is a mixture of hydrocarbons with boiling points in the range of 150 to 380°C which are obtained from petroleum.

Which of the following is desirable in diesel and kerosene but is undesirable in gasoline?

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. Paraffins

  2. Mercaptans

  3. Aromatics

  4. Naphthenic acid

Show answer
Correct Option: C
Explanation:

Aromatics are desirable in diesel and kerosene but is undesirable in gasoline. It is a mixture of paraffin (alkanes), cycloalkanes (naphthenes), and olefins (alkenes). Aromatics are a base component of gasoline derived from crude oil. Refiners manipulate these substances – mainly mixtures of chemicals like benzene, toluene, and xylene – to increase the octane rating, a measure of how well the fuel actually works.

Petroleum is ________natural resource .

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. exhaustible

  2. Inexhaustible

  3. both (a) & (b)

  4. none of these

Show answer
Correct Option: A
Explanation:

Petroleum is a non-renewable natural resource. It gets exhausted because it is not a natural renewable source.

So, Petroleum is exhaustible natural resource.

 What is called black gold?

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. Petroleum

  2. Natural gas

  3. Coal Tar

  4. Coal

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Correct Option: A
Explanation:

Petroluem is known as black gold as it is black coloured crude oil that is extracted from earth's crust and it has its value as it is limited in stock, takes millions of years to form and is costly available.

Molecular weight of crude petroleum may be around:

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. $500$

  2. $1000$

  3. $2500$

  4. $1500$

Show answer
Correct Option: D
Explanation:

Crude petroleum is the multi component mixture consisting of many compounds. It is drilled from the earth's crust and then refined in the petroleum refineries. Its molecular weight is around $1500$.

The layer containing petroleum oil and gas is:

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. below water

  2. between water and sand

  3. below sand

  4. above the water

Show answer
Correct Option: D
Explanation:

The density of gasoline ranges from 0.71–0.77 kg/L, where as that of water is 1kg/L, oil is less dense than water so it will "float" on water. Gas is less dense than both and will float to the top. higher densities having a greater volume of aromatics. Since gasoline floats on water, water cannot generally be used to extinguish a gasoline fire unless used in a fine mist. The petroleum products will separate by density.

What is the full form of PCRA?

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. Petroleum conservation research association

  2. petroleum consumption research association

  3. petroleum conservation recorces association

  4. petrochemical consumption research association

Show answer
Correct Option: A
Explanation:

Petroleum Conservation Research Association is a registered society set up under the aegis of Ministry of Petroleum & Natural Gas, Government of India (MoP&NG). PCRA is a national government agency engaged in promoting conservation of petroleum products & energy efficiency in various sectors of economy.

The advantage of ________ is that it cannot be used directly as fuel in homes and factories due to the inability of supply through pipes.

chemistry rocks and minerals coal petroleum non-renewable sources of energy

  1. CNG

  2. LPG

  3. Petroleum

  4. All of these

Show answer
Correct Option: A