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  • Class 8 Science Study Material

An Educational platform for Preparation and Practice Class 8. Kidsfront provide unique pattern of learning Science with free online comprehensive study material in the form of QUESTION & ANSWER for each Chapter of Science for Class 8. This study material help Class 8, Science students in learning every aspect of Coal and Petroleum . Students can understand Coal and Petroleum concept easily and consolidate their learning by doing Online Practice Tests on Science,Coal and Petroleum chapter repeatedly till they excel in Class 8, Coal and Petroleum . Free ONLINE PRACTICE TESTS on Class 8, Coal and Petroleum comprise of Hundreds of Questions on Coal and Petroleum , prepared by the highly professionals team. Every repeat test of Coal and Petroleum will have new set of questions and help students to prepare themselves for exams by doing unlimited Online Test exercise on Coal and Petroleum . Attempt ONLINE TEST on Class 8,Science,Coal and Petroleum in Academics section after completing this Coal and Petroleum Question Answer Exercise.


Unique pattern

  • Topic wise:Coal and Petroleum preparation in the form of QUESTION & ANSWER.
  • Evaluate preparation by doing ONLINE TEST of Class 8, Science,Coal and Petroleum .
  • Review performance in PRACTICE TEST and do further learning on weak areas.
  • Attempt repeat ONLINE TESTS of Science Coal and Petroleum till you excel.
  • Evaluate your progress by doing ONLINE MOCK TEST of Class 8, Science, All TOPICS.


Coal and Petroleum
Synthetic fibres and plastics are made from

a) Bitumen.
b) Petrochemicals.
c) Coke.
d) Paraffin wax.



Answer
Solution
Correct Answer Is : Petrochemicals.
Solution Is : Petrochemicals are raw materials of petroleum origin. These are used in the manufacture of detergents, fibres (polyester, nylon etc.), polythene and other man-made plastics.
An example of a cleaner fuel is

a) Petrol.
b) Diesel.
c) CNG.
d) Coal.



Answer
Solution
Correct Answer Is : CNG.
Solution Is : CNG is compressed natural gas. It is used as a fuel for transport vehicles because it is less polluting. It is a cleaner fuel. It can also be used directly for burning in homes and factories where it can be supplied through pipes.
The colour of coal is

a) White.
b) Grey.
c) Green.
d) Black.



Answer
Solution
Correct Answer Is : Black.
Solution Is : It is black in colour. When heated in air, coal burns and produces mainly carbon dioxide gas. Coal is processed in the industries in order to get useful products such as coke, coal tar and coal gas.
Coal and Petroleum are also called

a) Fossil fuels.
b) Fossils.
c) Biogas.
d) Natural gas.



Answer
Solution
Correct Answer Is : Fossil fuels.
Solution Is : Coal, petroleum and natural gas were formed from the dead remains of living organisms (fossils). So, these are all known as fossil fuels.
An example of exhaustible natural resource is

a) Air.
b) Forests.
c) Rocks.
d) Sunlight.



Answer
Solution
Correct Answer Is : Forests.
Solution Is : Exhaustible resources in nature are limited. Examples of these resources are forests, wildlife, minerals, coal, petroleum, natural gas etc. These resources may completely vanish, as a result of human activities.
The resources present in unlimited quantity in nature are called

a) Inexhaustible natural resources.
b) Natural resources.
c) Exhaustible natural resources.
d) Exhaustible resources.



Answer
Solution
Correct Answer Is : Inexhaustible natural resources.
Solution Is : These resources are present in unlimited quantity in nature and are not likely to be exhausted by human activities. For example, sunlight and air.
The resources present in limited quantity in nature are called

a) Limited resources.
b) Inexhaustible resources.
c) Exhaustible natural resources.
d) Natural resources.



Answer
Solution
Correct Answer Is : Exhaustible natural resources.
Solution Is : The amount of these resources in nature is limited. Such resources get exhausted by human activities. Examples of these resources are forests, wildlife, minerals, coal, petroleum, natural gas etc. These resources may completely vanish from nature if not used judiciously.
The process of separating various components of petroleum is called

a) Crystallisation.
b) Carbonisation.
c) Refining.
d) Sublimation.



Answer
Solution
Correct Answer Is : Refining.
Solution Is : The process of separating various components or fractions of petroleum is known as refining. It is done by fractional distillation. It is based on the fact that the different components of petroleum have different boiling points. The various components obtained by refining are petrol, LPG, kerosene, diesel, lubricating oil, paraffin wax and bitumen.
The world`s first oil well was drilled in

a) California.
b) Washington.
c) Texas.
d) Pennsylvania.



Answer
Solution
Correct Answer Is : Pennsylvania.
Solution Is : In 1859, the world`s first oil well was drilled in Pennsylvania, USA. In India, oil was stuck at Makum in Assam in 1867. In India, oil is found in Assam, Gujarat and Mumbai High and in the river basins of Godavari and Krishna.
Thermal power plants use

a) Petrol.
b) Natural gas.
c) Coal.
d) Diesel.



Answer
Solution
Correct Answer Is : Coal.
Solution Is : Coal is used in thermal power plants to produce electricity.