Chemistry · General Awareness

Carbon and Fossil Fuels

1,898 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 technology

on what cycle does petrol engine works

  1. Diesel cycle

  2. Otto cycle

  3. Carnot cycle

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

Petrol engines operate on the Otto cycle (also called the spark-ignition cycle), which uses a spark plug to ignite the air-fuel mixture. Diesel engines use compression ignition (Diesel cycle), while the Carnot cycle is a theoretical thermodynamic cycle. The Otto cycle has four strokes: intake, compression, power, and exhaust.

Multiple choice

Select the odd one out.

  1. Alcohol

  2. Steel

  3. Wood

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

Yes, it is the correct answer as steel is the odd one out. All other substances are inflammable, while steel is not.

Multiple choice

Which is considered to be the best fuel?

  1. Hydrogen

  2. Bio gas

  3. LPG

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

 Yes, it is correct .Hydrogen has highest calorific value.1,50,000 kj / kg.Hence combustion of hydrogen produces huge amount of heat energy, and so considered as best fuel.

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.