MEDIUM
8th CBSE
IMPORTANT
Earn 100

State a difference between complete and incomplete combustion.

Important Questions on Combustion, Flame and Fuels

MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 6 - Combustion, Flame and Fuels>ASSESSMENT ZONE>Q D
Does the burning of coal produce flame as the burning of wood does?
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 6 - Combustion, Flame and Fuels>ASSESSMENT ZONE>Q D
Why is carbon dioxide used in fire extinguishers?
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 6 - Combustion, Flame and Fuels>ASSESSMENT ZONE>Q D
Classify the fuels on the basis of their use.
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 6 - Combustion, Flame and Fuels>ASSESSMENT ZONE>Q D
Why are lead compounds harmful to us?
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 6 - Combustion, Flame and Fuels>ASSESSMENT ZONE>Q D
Why is soda-acid fire extinguisher not effective when oil catches fire?
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 6 - Combustion, Flame and Fuels>ASSESSMENT ZONE>Q D
Which of the following compounds has least calorific value. (biogas, wood, kerosene, LPG).
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 6 - Combustion, Flame and Fuels>ASSESSMENT ZONE>Q D
Why is LPG labelled as inflammable substance?
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 6 - Combustion, Flame and Fuels>ASSESSMENT ZONE>Q D
What is calorific value? Write its unit.