Chemistry · General Awareness

Carbon and Fossil Fuels

1,756 Questions

Review fundamental concepts regarding carbon compounds, coal distillation, and fossil fuel formation. This segment covers the chemical properties and industrial applications of natural gas and crude oil. Practicing these questions will strengthen your chemistry foundation for general science sections.

Coal distillationPetroleum formationProperties of crude oilNatural gas applications

Carbon and Fossil Fuels Questions

Multiple choice

Which is the odd one out?

  1. Charcoal

  2. Petrol

  3. Diesel

  4. Kerosene
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Yes, it is correct. Charcoal is the only solid fuel amongst them rest all are liqiud fuels.

Multiple choice

Name the fuel which is also known as 'black gold'.

  1. Coal

  2. Petroleum

  3. Diesel

  4. Kerosene
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Petroleum is commonly referred to as 'black gold' due to its immense economic value and importance as the primary energy source driving the modern global economy.

Multiple choice

Gun power is made from

  1. salt, pepper and sugar

  2. sulfur, charcoal and salt

  3. sulfur, charcoal and potassium hydroxide

  4. charcoal, salt and pepper
Reveal answer Fill a bubble to check yourself
C Correct answer
Multiple choice

Due to which of the following properties is the wood charcoal used in sugar industry?

  1. Because it is reducing agent

  2. Because it absorbs poisonous gases

  3. Because it acts as decolouring agent

  4. All of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wood charcoal's highly porous structure provides enormous surface area for adsorption, making it an effective decolorizing agent in sugar refining. It absorbs colored impurities without chemically reacting with the sugar itself, primarily through physical adsorption on its extensive internal surface.

Multiple choice

Which of the following is used as a lubricant?

  1. Graphite

  2. Silica

  3. Diamond

  4. Iron oxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Graphite has a layered structure where weak van der Waals forces exist between layers. This allows layers to slide over each other easily, making graphite an excellent solid lubricant.

Multiple choice

Which of the following sentences is true?

  1. Gasoline is fit for human consumption.

  2. Alcohol is a source of energy.

  3. Morphine and cocaine are derived from marijuana.

  4. Valium and compose are over the counter medicines.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Alcohol is a source of energy, but it has very less nutritive value.

Multiple choice

Which of the following substances can increase the antiknocking property of petrol?

  1. Tetramethyl lead

  2. Tetraethyl Lead

  3. Trimethyl Lead

  4. Triethyl Lead

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A colourless, poisonous, oily liquid, Pb(C2H5)4, used in gasoline for internal-combustion engines as an antiknock agent.(TEL) a lead compound used as an additive to increase the octane rating and reduce the knock or detonation tendencies of gasoline. One gram of lead increases the octane of one gallon of gasoline to about 6 numbers. The EPA has phased down the use of lead in gasoline as it has been determined to be a health hazard. Lead has been prohibited in highway vehicle gasoline since January 1, 1996.

Multiple choice

Cement can be formed by heating the mixture of ___________________ at a very high temperature.

  1. limestone and graphite

  2. limestone and clay

  3. chalk and graphite

  4. clay and graphite

  5. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cement is a fine, soft, powdery-type substance.  It is made from a mixture of elements that are found in natural materials such as limestone, clay, sand. When cement is mixed with water, it can bind sand and gravel into a hard, solid mass called concrete.

Multiple choice

Consider the following statements:

  1. Ethanol can be easily produced from carbohydrate rich substances like sugarcane and its calorific value is more than petrol.
  2. Ethanol is considered to be an excellent substitute for kerosene.

Which of the above statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  1. Ethanol is a biofuel and can be easily produced from carbohydrate rich substances like sugarcane, corn and sorghum. It burns clean and non polluting. However, as compared to petrol its calorific value is less and therefore, produces much less heat than petrol.
    1. Ethanol is considered to be an excellent substitute for kerosene and its combustion is as clean as LPG.
Multiple choice

What is a refinery?

  1. It is the place where oil gets refined.

  2. It is the first stage of oil refining.

  3. It is the process of converting large hydrocarbon molecules into smaller ones.

  4. The process of taking out petrol from the earth.

  5. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

No, it is incorrect as refinery is a place not a process. The first stage of oil refining, i.e., crude processing,  is known as distillation. 

Multiple choice

What does the word petroleum means?

  1. Rock oil

  2. Ancient sea structure

  3. Swamp gas

  4. Crude oil

  5. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Petroleum means rock oil. Petra means rock and oil means oil.