MEDIUM
8th CBSE
IMPORTANT
Earn 100

Answer the following in one word:

The innermost and coolest part of the flame.

Important Questions on Combustion and Fossil Fuels

MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 5
Answer the following in one word:

The unit for calorific value.

HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 1
Just by observation, how can you differentiate between incomplete and complete combustion?
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 2
What are the conditions required for combustion?
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 3
What is fuel? Name its three types with examples.
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 4
How are coke, coal tar and coal gas different from each other?
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 5
What are the limitations of fossil fuels?
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 6
Write any two ways in which we can conserve fossil fuels.
HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 1
Draw a neat and labelled diagram of the candle flame.