EASY
8th CBSE
IMPORTANT
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Why does a sheet of paper catch fire easily, while a piece of paper wrapped around aluminium rod does not?

Important Questions on Combustion and Flame

EASY
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 6 - Combustion and Flame>NUT Cracker>Q 4
Why it is difficult to burn heap of green leaves?
EASY
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 6 - Combustion and Flame>NUT Cracker>Q 5
Why do goldsmiths use the outer zone of the flame for melting gold?
MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 6 - Combustion and Flame>NaTTY NUT>Q I
Small pieces of _____ dipped in sulphur were used as matches in ancient Egypt. (bamboo wood/ pinewood)
MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 6 - Combustion and Flame>NaTTY NUT>Q I
The burning of wax in a candle is an example of _____ combustion.
Choose correct word from below:
Red, white Spontaneous Pinewood Oxygen Rapid
MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 6 - Combustion and Flame>NaTTY NUT>Q I

The type of flame produced by a fuel depends on the proportion of _____ available for burning the fuel.

 

Choose correct word from below:

Red, white              Spontaneous             Pinewood             Oxygen             Rapid

MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 6 - Combustion and Flame>NaTTY NUT>Q I

Disastrous fires in coal mines occur due to _____ combustion of coal dust.

Choose correct word from below:

Red, white              Spontaneous             Pinewood             Oxygen             Rapid

MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 6 - Combustion and Flame>NaTTY NUT>Q II
The rubbing surface on the side of a matchbox has a coating of powdered glass and a little red phosphorus.
MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 6 - Combustion and Flame>NaTTY NUT>Q II
In the absence of air, a combustible substance can burn if it is heated to its ignition temperature.