Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology coal, petroleum and petrochemicals carbon cycling mineral coal carbon cycle coal and its products

Which form of coal has the highest carbon content in it?

  1. Lignite

  2. Sub-bituminous

  3. Bituminous

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

The order of carbon content is as follows:

Lignite < sub-bituminous < bituminous < anthracite 
Hence, anthracite has highest carbon content. It is a hard, compact variety of coal that has a good lustre.

Multiple choice biology coal, petroleum and petrochemicals carbon cycling mineral coal carbon cycle coal and its products

Peat is the first stage product of coal consisting of $60$% carbon.

  1. True

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

Peat is a fuel consisting of spongy material formed by the partial decomposition of organic matter in wetlands such as swamps, bogs, and moors. Peat contains tree cellulose, more than $75$% moisture and less than $60$% carbon.

Multiple choice biology coal, petroleum and petrochemicals carbon cycling mineral coal carbon cycle coal and its products

Which of the following states is the largest producer of lignite coal?

  1. Tamil Nadu

  2. Bihar

  3. Karnataka

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

Coal is available in four forms: Lignite, bituminous, anthracite and sub- bituminous. Anthracite is the highest ranked coal with the carbon percentage of above 87%. The carbon conten in lignite is 60-70%.  Tamil nadu is the largest producer of lignite coal.

Multiple choice biology coal, petroleum and petrochemicals carbon cycling mineral coal carbon cycle coal and its products

The coal with highest ash content is?

  1. Steam Coal

  2. Lignite

  3. Coking Coal

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

Coal is available in 4 forms: Lignite, bituminous, anthracite and sub-bituminous. Anthracite is the highest ranked coal with the carbon percentage of above 87%. The carbon content in bituminous is 77-87%, in sub-bituminous is 71-77% and in lignite is 60-70%.  Lignite has the least carbon content and hence highest ash content.

Multiple choice biology coal, petroleum and petrochemicals carbon cycling mineral coal carbon cycle coal and its products

Which of the following will give off less heat per given unit weight?

  1. Peat

  2. Lignite

  3. Bituminous

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

  • Peat has the carbon content of about 
  • Anthracite has the carbon content of above 87%.
Hence, peat has the minimum carbon content and anthracite is the highest ranked coal.
So, peat will produce least heat per given unit weight and the anthracite will produce the highest heat per given unit weight.

Multiple choice biology coal, petroleum and petrochemicals carbon cycling mineral coal carbon cycle coal and its products

The best coal suitable for the production of energy is_________________.

  1. Lignite

  2. Bituminous

  3. Anthracite

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

Anthracite coal has several important advantages not only over other forms of coal but over other energy-producing materials in general. Its most important advantage is, of course, the fact that it produces very little pollution or soot, making it a very clean source of heat. Anthracite coal is also very efficient because only a small amount needs to be burnt to produce a large amount of energy. Additionally, there is a large supply of anthracite, over six billion tons in the Appalachian Mountains alone, with more reserves found in the Rocky Mountains and the Andes.

Hence, the correct option is $C$