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

Complete combustion of hydrocarbon produces

  1. CO and water.

  2. CO and Hydrogen.

  3. CO2 and H2.

  4. CO2 and H2O.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Complete combustion of hydrocarbons produces carbon dioxide (CO2) and water (H2O). This is the balanced equation: CxHy + (x + y/4)O2 → xCO2 + (y/2)H2O. Carbon monoxide (CO) is a product of incomplete combustion.

Multiple choice

Tetraethyl lead (TEL) is added to petrol to

  1. increase boiling point

  2. prevent freezing

  3. increase anti-knocking rating

  4. increase flash point
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tetraethyl lead (TEL) is extensively used as an additive to gasoline, wherein it served as an effective antiknock agent and prevented exhaust valve and seatwear.

Multiple choice

Diesel oil is preferred for heavy motor vehicles because of

  1. less damage to engine

  2. higher efficiency and fuel economy

  3. higher industrial production from crude

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

The diesel engine has proved to be extremely efficient and cost effective. Diesel engines in automobiles provide higher mileage, making it an obvious choice for heavy-duty transportation and equipment. And diesel engines are attracting greater attention due to higher efficiency and cost effectiveness.

Multiple choice

Why is crude oil known as black gold?

  1. Because of its colour.

  2. Its importance in today's world.

  3. We get gold out of this black liquid after processing.

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

Yes, its importance makes it precious and gold is precious too, so the name given as BLACK GOLD.

Multiple choice

Which of the following is not an allotropic forms of coal?

  1. Lignite

  2. Carbonblack

  3. Anthracite

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

It is obtained by burning natural gas in the presence of limited supply of air and collecting the soot on the underside of a revolving disc which is scrapped off and packed. It is not an allotropic forms of coal.

Multiple choice

Choose the correct statement.

  1. Coal is stored under high pressure.

  2. Burning of coal is eco-friendly.

  3. It is easy to transport coal through pipeline.

  4. Coal is used for power generation.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coal is used in thermal power plants for heat generation.

Multiple choice

Among the following ----------------------- is a ingredient of a smoke bombs.

  1. sodium metabisulphite

  2. sodium methoxide

  3. sodium naphthalenide

  4. sodium nitrate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium nitrate is the chemical compound with the formula NaNO3. It is a white solid which is very soluble in water. It is used as an ingredient in fertilizers, as an ingredient in smoke bombs, as a food preservative, and as a solid rocket propellant, as well as in glass and pottery enamels.