MEDIUM
8th CBSE
IMPORTANT
Earn 100

Look at the picture given below. It shows different colours of the flame with change in oxygen supply. Number them in correct order from 1 to 4 according to increase in oxygen supply.
C:\Users\pk\Desktop\Colour of flame.PNG

Important Questions on Combustion and Fossil Fuels

EASY
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 5 - Combustion and Fossil Fuels>Let's Remember>Q I
Sand is a non-combustible substance.
EASY
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 5 - Combustion and Fossil Fuels>Let's Remember>Q I
Combustion of LPG is an example of rapid combustion.
EASY
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 5 - Combustion and Fossil Fuels>Let's Remember>Q I
Combustion is only possible if the substance is combustible.
EASY
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 5 - Combustion and Fossil Fuels>Let's Remember>Q I
Water should be poured over burning petrol, kerosene or diesel.
EASY
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 5 - Combustion and Fossil Fuels>Let's Remember>Q I
The middle zone of a candle flame emits the most light.
EASY
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 5 - Combustion and Fossil Fuels>Let's Remember>Q II
What are combustible substances?
MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 5 - Combustion and Fossil Fuels>Let's Remember>Q II
What are the conditions necessary for combustion to occur?
MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 5 - Combustion and Fossil Fuels>Let's Remember>Q II
Which zone of a candle is the hottest part of the flame?