A C Sehgal Solutions for Exercise 3: EXERCISES

Author:A C Sehgal

A C Sehgal Science Solutions for Exercise - A C Sehgal Solutions for Exercise 3: EXERCISES

Attempt the practice questions from Exercise 3: EXERCISES with hints and solutions to strengthen your understanding. Living Science 8 solutions are prepared by Experienced Embibe Experts.

Questions from A C Sehgal Solutions for Exercise 3: EXERCISES with Hints & Solutions

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D

How does carbon dioxide extinguish a fire?

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D

What is calorific value of a fuel? Why is hydrogen not used as a fuel though it has the highest calorific value?

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D

How are fuels classified on the basis of their physical state? Give two examples of each.

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D

How is burning of fossil fuels thought to be related to global warming?

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q E

Explain, with the help of a labelled diagram, how a soda-acid type fire extinguisher works.

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q E

Name the different zones of a candle flame. Give details of the conditions in each zone.

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q E

What are the characteristics of a good fuel?

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q E

Discuss the impact of burning fuels on air.