NCERT Solutions | Class 8 Science Chapter 5 | Coal and Petroleum

CBSE Solutions | Science Class 8

Check the below NCERT Solutions for Class 8 Science Chapter 5 Coal and Petroleum Pdf free download. NCERT Solutions Class 8 Science were prepared based on the latest exam pattern. We have Provided Coal and Petroleum Class 8 Science NCERT Solutions to help students understand the concept very well.

NCERT | Class 8 Science

NCERT Solutions Class 8 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	8th
Subject:	Science
Chapter:	5
Chapters Name:	Coal and Petroleum
Medium:	English

Coal and Petroleum | Class 8 Science | NCERT Books Solutions

You can refer to MCQ Questions for Class 8 Science Chapter 5 Coal and Petroleum to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

NCERT TEXTBOOK EXERCISES

cbse class 8 science notes pdf, Question 1.

What are the advantages of using CNG and LPG as fuels?

ncert class 8 science Chapter 5 question answer, Answer :

The advantages of using CNG and LPG as fuels are as follows:

These are clean fuels.
These are low-cost fuels.
These are available easily.
These can be used directly for burning in homes and factories where it can be supplied through pipes.

cbse class 8 science syllabus pdf, Question 2.

Name the petroleum product used for surfacing roads.

cbse science class 8 solutions, Answer :

A petroleum product ‘Bitumen’ is used for surfacing of roads.

cbse science class 8 book, Question 3.

Describe how coal is formed from dead vegetation. What is this process called?

ncert class 8 science Chapter 5 question answer, Answer :

About 300 million years ago, the earth was having dense forests in low-lying wetland areas. Due to earthquakes and volcanic eruptions, these forests got buried under the soil. As more soil deposited over them, they were compressed.

The temperature also raised as they sank deeper and deeper. Due to high temperature and lack of oxygen, dead plants inside the earth got slowly converted to coal. As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonization.

cbse science class 8 book pdf, Question 4.

Fill in the blanks:

(a) Fossil fuels are.…….,…………. and………..
(b) Process of separation of different constituents from petroleum is called………………
(c) Least polluting fuel for a vehicle is……………

cbse science class 8 solutions, Answer :

(a) coal, petroleum, natural gas
(b) refining
(c) CNG.

cbse science class 8 Chapter 5, Question 5.

Tick True/False against the following statements:
(a) Fossil fuels can be made in the laboratory. (T/F)
(b) CNG is more polluting fuel than petrol. (T/F)
(c) Coke is almost pure form of carbon. (T/F)
(d) Coal tar is a mixture of various substances. (T/F)
(e) Kerosene is not a fossil fuel. (T/F)

ncert class 8 science Chapter 5 question answer, Answer :

(a) False
(b) False
(c) True
(d) True
(e) False.

cbse science class 8 syllabus, Question 6.

Explain why fossil fuels are exhaustible natural resources.

cbse science class 8 solutions, Answer :

Fossil fuels are present in nature in limited quantity and are being exhausted abundantly by us. That is why fossil fuels are called exhaustible natural resources.

class 8 science Chapter 5, Question 7.

Describe characteristics and uses of coke.

ncert class 8 science Chapter 5 question answer, Answer :

Coke is a tough, porous, and black substance. It is an almost a pure form of carbon. “Coke is obtained by heating soft coal in the absence or little supply of air”.
It is used in the manufacture of steel and in the extraction of many metals.

NCERT Class 8 Science book, Question 8.

Explain the process of the formation of petroleum.

cbse science class 8 solutions, Answer :

Petroleum is formed from organisms living in the sea. When these organisms died, their bodies settled at the bottom of the sea and got covered with layers of sand and clay. Over millions of years, they were transformed into petroleum and natural gas under the absence of air and the presence of high temperature and pressure.

NCERT Class 8 Science book PDF, Question 9.

The following table shows the total power shortage in India from 1991-1997.
Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis.

ncert class 8 science Chapter 5 question answer, Answer :