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 carbon tetrachloride ddt preparation of haloalkanes halogen derivatives
Carbon tetrachloride is inflammable.

  1. True

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

Carbon tetrachloride $\displaystyle (CCl _4)$ is not inflammable.
Hence, the given statement is false.

Note:
Carbon tetrachloride $\displaystyle (CCl _4)$ is poisionous and water insoluble. It is soluble in ethanol and ether.

Multiple choice carbon tetrachloride ddt preparation of haloalkanes halogen derivatives

The fire extinguisher 'Pyrene' contains:

  1. carbon dioxide

  2. carbon disulphide

  3. carbon tetrachloride

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

Carbon tertrachloride is commonly used liquid in fire extinguishers to control fire. When heated to decomposition, it emits fumes of toxic phosgene and of hydrogen chloride. 

Multiple choice chemistry materials we use soap and detergents soap soap and detergent

Ordinary gasoline (petrol) that is used as fuel cars, scooters and automobiles contain many different chemicals that are added in small quantities, each performing an important role. Some of these are mentioned here. Which of the option is false?

  1. Soaps used for removing particles of grease from petrol tanks ensure a free flow of petrol

  2. Anti-icing agents are used for depressing the freezing point of particles of ice

  3. Anti-rust agents are used for protecting against corrosion by water

  4. Detergents are used for preventing gums from sticking on the walls of the carbureter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$\bullet$ Anti- rust agents are used for protecting iron materials against corrosion by water. Example- Redoxide.

$\bullet$ Anti-icing agents are used for depressing the freezing point of particles of ice.
$\bullet$ Soaps only grease particles from clothes, but it can't remove grease from petrol.

Multiple choice chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

Biomass is used instead of extensive use of petroleum. This is an application of :

  1. Green revolution

  2. waste management

  3. Green chemistry

  4. revolution resource recovery
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Use of petroleum creates lots of gases which are harmful to the environment. 


In order to decrease human consumption of petroleum, chemists have investigated methods for producing polymers from renewable resources such as biomass. 

NatureWorks polylactic acid (PLA) is a polymer of naturally occurring lactic acid (LA), which on consumption creates no waste and hence, is an environment-friendly compound.

It is an application of Green chemistry.

Hence the correct option is C.

Multiple choice chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

_______ is an environment-friendly product and better than halons which are used to extinguish fire.

  1. Ibuprofen

  2. Pyrocool

  3. Carcinogen

  4. Carbon-dioxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pyrocool is a product which is environmentally benign foam discovered using concept of Green chemistry. Large-scale fires such as oil tankers and jet airplane can be extinguished in a short time and in a better way than previous use of the halons.

Multiple choice chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

paraffin wax contains alkanes ranging from

  1. ${ C } _{ 3 }$ to ${ C } _{ 9 }$
  2. ${ C } _{ 10 }$ to ${ C } _{ 15 } $
  3. ${ C } _{ 16 }$ to ${ C } _{ 20 }$
  4. ${ C } _{ 21 }$ to ${ C } _{ 30 }$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Paraffin wax is a mixture of solid alkanes. It typically consists of long-chain hydrocarbons ranging from C21 to C30.

Multiple choice chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

Hydrocarbons is produced as a result of:

  1. fertilizer

  2. incomplete combustion of fuels in automobile engines.

  3. paper industry

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

Hydrocarbon is produced as a result of incomplete combustion of fuels in automobile engines.
In animals, hydrocarbons can cause cancer, while in plants, they cause ageing by breaking down tissues, which causes shedding of leaves, twigs and flowers.

Multiple choice zoology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

Phosphorus cycle is

  1. Gaseous cycle

  2. Perfect cycle

  3. Imperfect cycle

  4. Partly gaseous and partly sedimentary
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The phosphorus cycle is considered an imperfect cycle because a significant portion of phosphorus is lost to deep ocean sediments and is not readily recycled back into the biosphere on a short timescale.