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 geography mineral and energy resources - ii mineral resources - coal - introduction mining mineral fuels

____________ is the highest quality hard coal.

  1. Black coal

  2. Gray coal

  3. Non coal

  4. Anthracite

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Anthracite: The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.

Multiple choice our life and environment geography

Zero emission cars will produce _____.

  1. Water as waste

  2. Carbon dioxide as waste

  3. Carbon monoxide as waste

  4. Hydrogen and oxygen as waste
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A zero-emissions vehicle, or ZEV, is a vehicle that emits no tailpipe pollutants from the onboard source of power. Harmful pollutants to the health and the environment include particulates (soot), hydrocarbons, carbon monoxide, ozone, lead, and various oxides of nitrogen. Although not considered emission pollutants by the original California Air Resources Board (CARB) or U.S. Environmental Protection Agency (EPA) definitions, the most recent common use of the term also includes volatile organic compounds, several air toxics and global pollutants such as carbon dioxide and other greenhouse gases.

Multiple choice our life and environment geography

Sometimes ________ gas leakage is seen during the course of mining.

  1. Sulphur-di-oxide

  2. Methane

  3. Carbon-di-oxide

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

Gas leak is a menace during mining mining, especially, methane. This happens more in coal mines, where there is abundance of carbon. An atom of carbon with hydrogen to form methane. It is suffocating and has proved fatal to miners in the past.

Multiple choice our life and environment geography

The smoke coming out of refineries during the process of purification has particles of _________.

  1. Carbon

  2. Metals

  3. Solids

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

Refinery emissions contain a complex mixture of pollutants including carbon particles, various metals, and solid particulates.

Multiple choice chemistry basic concepts of chemistry law of multiple proportion law of multiple proportions laws of chemical combination

The % composition of four hydrocarbons are as follows:


(i) (ii) (iii) (iv)
%C 75 80 85.7 91.3
%H 25 20 14.3 8.7


The data illustrates the law of:

  1. constant proportion

  2. conservation of mass

  3. multiple proportion

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

The law of multiple proportions states that when two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other are in a ratio of small whole numbers. This table shows different hydrocarbons, illustrating this law.

Multiple choice chemistry basic concepts of chemistry law of multiple proportion law of multiple proportions laws of chemical combination

A hybrid rocket propellant uses:

  1. a liquid oxidizer and a solid fuel

  2. a complete solid propellent

  3. a beleqiud propellent

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Hybrid propellant engines represent an intermediate group between solid and liquid propellant engines. One of the substances is solid, usually the fuel, while the other, usually the oxidizer, is liquid. 

The liquid is injected into the solid, whose fuel reservoir also serves as the combustion chamber. The main advantage of such engines is that they have high performance, similar to that of solid propellants, but the combustion can be moderated, stopped, or even restarted. It is difficult to make use of this concept for vary large thrusts, and thus, hybrid propellant engines are rarely built.

A hybrid engine burning nitrous oxide as the liquid oxidizer and HTPB rubber as the solid fuel powered the vehicle SpaceShipOne, which won the Ansari X-Prize.

Hence, the correct option is $\text{A}$
Multiple choice physics the essence of change forms of energy and energy conservation energy for everything forms of energy

The energy that helps in burning of wood is :

  1. Chemical

  2. Electrical

  3. Potential

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

In the case of burning wood, stored chemical energy in the log is released due to heating by other excited atoms. This chemical reaction is called combustion and requires oxygen. Combustion changes the chemical energy into heat and light energy.


Hence, correct answer is option $A$

Multiple choice physics the essence of change forms of energy and energy conservation energy for everything forms of energy

The form of energy stored in kerosene is :

  1. Chemical

  2. Heat energy

  3. Magnetic

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

When kerosene burns its hydrocarbons react with oxygen and produces heat and light energy, so some chemical enwrgy is stored in the kerosene because energy can neither b created nor b destroyed.

So best option is option A.

Multiple choice separation of components of mixtures methods of separation elements, compounds and mixtures chemistry

Liquefaction of gases helps in :

  1. storing a gas in a compact form

  2. transporting a gas easily

  3. both a and b

  4. none of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The most important advantage of liquefying gases is that they can then be stored and transported in much more compact form than in the gaseous state. Two kinds of liquefied gases are widely used commercially for this reason, liquefied natural gas (LNG) and liquefied petroleum gas (LPG).