Tag: fossil fuels

Questions Related to fossil fuels

Quality of a diesel is measured in terms of its?

chemistry energy rocks and minerals petroleum and natural gas fossil fuels

  1. Cetane number

  2. Octane number

  3. Gold number

  4. Avogadro number

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Correct Option: A
Explanation:

A cetane number is the measure of the quality of the diesel . Higher cetane number indicates that the fuel ignites more readily when sprayed over hot compressed air.

Which of the following is present in the heavy oil obtained during petroleum distillation ?

chemistry energy rocks and minerals petroleum and natural gas fossil fuels

  1. Gas oil

  2. Fuel oil

  3. Diesel oil

  4. All of these

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Correct Option: D
Explanation:

The following fuels are present in the heavy oil obtained during petroleum distillation 1. Gas oil  2.Fuel oil and Diesel oil.

So all the given options are correct.

Hence option D is correct.

Complete removal of ______ from gasoline is done by Unisol process using caustic soda and methyl alcohol. 

chemistry energy rocks and minerals petroleum and natural gas fossil fuels

  1. asphalt

  2. mercaptans

  3. diolefins

  4. waxes

Show answer
Correct Option: B
Explanation:

Unisol process is a regenerative method for not only extracting or removing mercaptans but also some of the nitrogen compounds. In this process first gasoline is washed counter-currently with aqueous caustic methanol solution. The spent caustic is regenerated in a stripping tower where the methanol, water and mercaptans are extracted.

LPG used as domestic fuel is mixed with a strong smelling volatile liquid for __________.

chemistry fossil fuels petroleum properties of alkanes rocks and minerals

  1. better combustion

  2. good smell/fragrance

  3. detection of gas leakage

  4. higher calorific value

Show answer
Correct Option: C
Explanation:

If the gas leaks in air, it can be easily detected due to smell and preventive measures can be taken. Hence, LPG is mixed with a strong smelling volatile liquid.