EASY
8th CBSE
IMPORTANT
Earn 100

The calorific value of a fuel is expressed in a unit called

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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 12
In villages, people use wood as fuel because:
MEDIUM
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 6 - Combustion and Flame>MULTIPLE CHOICE QUESTIONS>Q 13
Which among the following is considered as the cleanest fuel?
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.