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 biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

Kerosene burns more rapidly than coke because

  1. It has got more oxygen in it than coke

  2. It is a liquid hydrocarbon

  3. It has a low ignition temperature

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

Ignition temperature is the minimum temperature at which a substance catches fire. Kerosene has a lower ignition temperature than coke, allowing it to ignite and burn more rapidly.

Multiple choice biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

Destructive distillation of coal leads to the formation of

  1. Wood

  2. Kerosene

  3. Amino acid liquor

  4. Charcoal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The destructive distillation of coal produces coal gas, coal tar, and ammoniacal liquor (often referred to as amino acid liquor in some contexts). Wood and kerosene are not products of coal distillation.

Multiple choice biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

Which of the following is not an example of spontaneous combustion?

  1. Burning of liquified petroleum gas

  2. Fire caused in coal mines

  3. Dry white phosphorous liberates white fumes on exposure to air

  4. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Spontaneous combustion occurs without an external ignition source. LPG requires an external spark or flame to ignite, so it is not an example of spontaneous combustion.

Multiple choice biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

Which of the following are formed under the earth by the decomposition of plant matter by anaerobic bacteria lying under water?

  1. Coal gas

  2. Petroleum gas

  3. Natural gas

  4. Producer gas
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

Coal gas and natural gas are formed under the earth by the decomposition of plant matter by anaerobic bacteria lying under the water.

The correct option is A and C.

Multiple choice biology food and it's constituents functions and principal sources of lipids chemical organization in living beings lipids

Commonly, candles are prepared from

  1. Bees wax

  2. Paraffin wax

  3. Stearic acid

  4. Both (b) and (c)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The use of wax used to prepare candles has changed during the past few centuries. Nowadays, standard commercial candles are made from a combination of Paraffin wax and Stearic acid. A small amount of Bee wax may or may not be added in the making.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Fill in the blanks by suitable words to make correct statements:

When ________ is burnt, it releases toxic gases into the air causing air pollution.

  1. LPG

  2. Plastic

  3. Both A and B

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

Burning plastic releases toxic chemicals and pollutants into the air, contributing significantly to air pollution.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Non-biodegradable substance releases harmful gases when burnt.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Non-biodegradable products include plastic products, metal products, construction waste, electronics etc. Non-biodegradable products are items that cannot decay or be broken down by living organisms. The bio-degradable substances leach out toxic chemicals when they are burnt and are harmful to health.