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 commercial applications bioenergy biofuels making biofuels technological and industrial development

It is possible to extract maximum energy from wood through 

  1. Biomass

  2. Cracking

  3. Direct burning

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

Gasification is an efficient means of converting low value fuels and residuals into a synthesis gas (or syngas). Syngas is used to produce power, steam, hydrogen, and basic chemicals such as methanol and ammonia.

Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

The most abundant fossil fuel is

  1. Natural gas

  2. Petrol

  3. Diesel

  4. Coal
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Fossil fuels are obtained from organic matter that has decomposed under the intense pressure and heat of the earth's crust. According to a data published in 2013 by the International Energy Agency, coal was found to be the most abundant fossil fuel. Thus, the correct answer is option D.
Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Petrocrops are plants

  1. Grown near oil fields

  2. Used in refining crude oil

  3. Whose fossil remains formed crude oil

  4. From which petrol-like fuels can be derived
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Petrocrops are specific plants that produce hydrocarbons similar to petroleum, which can be extracted and refined into fuel. They are not related to the formation of ancient crude oil.

Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Coal has been mainly formed by 

  1. Bryophytes

  2. Pteridophytes

  3. Angioperms

  4. Algae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Bryophytes are group of non vascular land plants including hornworts, liverworts and mosses. Peat is a fuel which is produced from dried bryophytes, typically sphagnum. Enormous deposits of peat is accumulated which is later converted into coal.
  • Hence coal has been mainly formed by bryophytes.
  • So,the correct answer is 'Bryophytes'.
Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Domestic cooking gas cylinder contains

  1. Coal gas

  2. Liquid petroleum gas

  3. Diesel oil

  4. Alcohol
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • The domestic cooking gas cylinder contains Liquid petroleum gas.
  • Its composition is propane or butane or a mixture of both, are flammable mixtures of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles.
  • So, the correct answer is 'Liquid petroleum gas'.
Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Amount of ethanol that can be added in petrol and used in conventional gasoline engines is

  1. 5-10%

  2. 10-20%

  3. 15-25%

  4. 25-40%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Amount of ethanol that can be added in petrol and used in conventional gasoline engines is about 5% to 10%. This is done because ethanol is a particulate-free burning fuel source. At many gas stations, E10 ethanol is widely used. It is a mixture of 10% ethanol with 90% gasoline.  

Thus, the correct answer is '5-10%.'

Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Mineral oil is

  1. Mustard oil

  2. Petroleum

  3. Liquefied petroleum gas

  4. Palm oil
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Petroleum is dark coloured thick crude oil and is also called fossil fuel. It is known as mineral oil as it is procured during refining and extraction of crude oil.
A. Mustard oil is obtained from the seeds of the black and white mustard plant. These oils are edible vegetable oils. 
B. Petroleum is mineral oil.
C. LPG is prepared by oil refining or during natural gas processing. 
D. Palm oil is obtained from palm fruit. 
Hence, the correct answer is 'Petroleum'
Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Which one of the following is not a fossil fue;?

  1. uranium

  2. coal

  3. natural gas

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

Uranium is not a fossil fuel. It is a radioactive mineral used in nuclear reactors. Coal, natural gas, and petroleum are all fossil fuels formed from decomposed ancient organic matter. The question has a typo (fossil fue;) but the meaning is clear.

Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Gasohol is a _____________.

  1. Renewable fuel

  2. Non-renewable fuel

  3. Newly discovered fossil fuel

  4. Combination of renewable and non-renewable resources
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Gasohol is a  combination of renewable and non-renewable resources.
Gasohol is an alternative fuel consisting of a mixture of typically 90 percent gasoline with 10 percent anhydrous ethanol. Gasohol can be used in most modern and light duty vehicles with an internal combustion.
Gasohol is a mixture of gasoline and alcohol (mostly ethanol).

Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

One of the following is not a possible reason for use of CNG in automobiles

  1. It can be adulterated

  2. It is cheaper than petrol

  3. It burns more efficiency

  4. It reduces pollution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Compressed natural gas vehicles require a greater amount of space for fuel storage than conventional gasoline-powered vehicles. Since it is a compressed gas, rather than a liquid like gasoline, CNG takes up more space for each GGE (gasoline gallon equivalent). However, the tanks used to store the CNG take up space in the trunk of a car or bed of a pickup truck which has been modified to additionally run on CNG. This problem is solved in factory-built CNG vehicles that install the tanks under the body of the vehicle, leaving the trunk free (e.g.,  Volkswagen) which sold in countries such as Peru). Another option is installed on the roof (typical on buses), but this could require structural modifications.

SO the correct answer is 'It can be adulterated'.

Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

The earliest use of petroleum was in

  1. Heating

  2. Furnace

  3. Medicine

  4. Production of gas
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The ancient use of petroleum traced back to medicinal purposes. It was used to treat camels by desert nomads, Roman emperor can be said to have treated his gout with petroleum while Persians and Sumatrans also believed that petroleum has commercial value. Petroleum as of now is most popularly used as fuel, it's products include fuel oils for heating and electricity. The refining of petroleum produces by-products which are further brought into use to obtain products for example gasoline. 
Hence, the correct answer is 'Medicine'.
Multiple choice biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

Important use of which of the following is as a lubricant

  1. Helianthus annuus

  2. Carthamus tinctorious

  3. Ricinus communis

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

Castor oil (Ricinus communis) has a number of medicinal, industrial and pharmaceutical uses. It's commonly used as an additive in foods, medications and skin care products and as an industrial lubricant, biodiesel fuel component, etc.

So the correct option is C.