Tag: rocks and minerals

Quizzes (5) Questions (347)

Questions Related to rocks and minerals

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

_____ is the material remaining after the removal of pyridine and other distillates from coal tar.

  1. Pitch

  2. Stalk

  3. Lignite

  4. None of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tar bases are the alkaline constituents of distillate oils, remaining after tar acids have been removed. One of the base that is recovered is pyridine, a colourless nitrogenous liquid that has a pungent odour and produces derivatives that are of pharmaceutical value. Pitch is the material remaining after the removal of pyridine and other distillates. It is useful in the aluminium industry for the manufacture of electrodes.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Coal gas contains:

  1. hydrogen

  2. carbon monooxide

  3. methane

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system. Town gas is a more general term referring to manufactured gaseous fuels produced for sale to consumers and municipalities.
Coal gas contains a variety of calorific gases including hydrogen, carbon monoxide, methane and volatile hydrocarbons together with small quantities of non-calorific gases such as carbon dioxide and nitrogen.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Which type of coke is considered as pure coke?

  1. The coke which contain less quantity of carbon

  2. The coke which contain less quantity of sulphur

  3. The coke which contain less quantity of ash

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

The coke which contain less quantity of ash, sulfur and high quantity of carbon is called as pure coke.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Low temperature carbonisation __________.

  1. is mainly for production of smoke full coke

  2. is mainly for producing smokeless domestic coke

  3. is producing less quantity tar

  4. is meant for the production of metallurgical coke
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbonisation is the procedure in which carbon dioxide is added to the coke to make it smokeless.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Naphthalene which is used to repel moths and other insects is obtained from:

  1. Coal Tar

  2. Petroleum

  3. Coke

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

Naphthalene which is used to repel moths and other insects is obtained from coal tar.
Coal tar is a thick black liquid. It is obtained from the distillation of bituminous coal. It contains benzene, naphthalene, phenols, aniline, and many other organic chemicals.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Coal can be used as a:

  1. purifier

  2. fuel

  3. insecticide

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

Coal is a fossil fuel that forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite.The most significant uses of coal are in electricity generation, steel production, cement manufacturing and as a liquid fuel.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

One which is known as a nonrenewable energy is:

  1. tides

  2. coal

  3. wind

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

A non-renewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. Most fossil fuels, such as oil, natural gas and coal are considered nonrenewable resources in that their use is not sustainable because their formation takes billions of years.