MEDIUM
8th CBSE
IMPORTANT
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Which among the following is considered as the cleanest fuel?

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Important Questions on Combustion and Flame

MEDIUM
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>MULTIPLE CHOICE QUESTIONS>Q 14
Choose the incorrect statement from the following.
A good fuel is one which
MEDIUM
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>MULTIPLE CHOICE QUESTIONS>Q 15
Shyam was cooking potato curry on a chulha. To his surprise he observed that the copper vessel was getting blackened from outside. It may be due to:
MEDIUM
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>VERY SHORT ANSWER QUESTIONS>Q 16
The substances which vaporise during _____, give flame.
EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>VERY SHORT ANSWER QUESTIONS>Q 17
Some words (underlined) in the following sentences are jumbled up. Write them in their correct form.
Seldie is a combustible substance.
EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>VERY SHORT ANSWER QUESTIONS>Q 17

Some words (underlined) in the following sentences are jumbled up. Write them in their correct form.

SLAGS is a non-combustible material.

EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>VERY SHORT ANSWER QUESTIONS>Q 17

Some words (underlined) in the following sentences are jumbled up. Write them in their correct form.

Chittsmack does not burn by itself.

EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>VERY SHORT ANSWER QUESTIONS>Q 17

 Some words (underlined) in the following sentences are jumbled up. Write them in their correct form.

Some substances on combustion produce thea and mafel.

EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>VERY SHORT ANSWER QUESTIONS>Q 17

Some words (underlined) in the following sentence is jumbled up. Write it in the correct form.

The amount of heat energy produced on complete combustion of 1 kg of a fuel is called its ficalroic value.