Dhiren M Doshi Solutions for Chapter: Combustion and Flame, Exercise 3: Exercise

Author:Dhiren M Doshi

Dhiren M Doshi Science Solutions for Exercise - Dhiren M Doshi Solutions for Chapter: Combustion and Flame, Exercise 3: Exercise

Attempt the free practice questions on Chapter 6: Combustion and Flame, Exercise 3: Exercise with hints and solutions to strengthen your understanding. LEARNING SCIENCE solutions are prepared by Experienced Embibe Experts.

Questions from Dhiren M Doshi Solutions for Chapter: Combustion and Flame, Exercise 3: Exercise with Hints & Solutions

HARD
8th CBSE
IMPORTANT

Nitika is reading a book in her balcony. Suddenly, she observes fire at her neighbour's house in their kitchen. She immediately rushes and informs the old lady, who is the only one there. Finding the overturned kerosene can, that caused the fire, Nitika immediately opens the fire extinguisher and puts out the fire.

Why do you think Nitika used fire extinguisher and not water?

HARD
8th CBSE
IMPORTANT

Nitika is reading a book in her balcony. Suddenly, she observes fire at her neighbour's house in their kitchen. She immediately rushes and informs the old lady, who is the only one there. Finding the overturned kerosene can, that caused the fire, Nitika immediately opens the fire extinguisher and puts out the fire.

Which values are shown by Nitika in this act?

MEDIUM
8th CBSE
IMPORTANT

How do we classify fuels?

MEDIUM
8th CBSE
IMPORTANT

How does the amount of carbon dioxide effect our environment?

MEDIUM
8th CBSE
IMPORTANT

Why cannot we use water for the fire at petrol pump? What type of temporary arrangement are available there ?

MEDIUM
8th CBSE
IMPORTANT

How does the bursting of crackers which contains some phosphorous, sulphur and magnesium along with other chemicals can pollute our environment?

MEDIUM
8th CBSE
IMPORTANT

Forest fires are particularly destructive when

MEDIUM
8th CBSE
IMPORTANT

Which of the following pair is incorrect?