COMBUSTION AND FLAME
Assessment
•
Nishi Gupta
•
Chemistry
•
8th Grade
•
1K plays
•
Easy
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10 questions
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1.
Multiple Choice
The hottest zone of a candle flame is
Non-luminous zone
Luminous zone
dark zone
blue zone at the base of the wick.
2.
Multiple Choice
Which poisonous gas is formed as a result of incomplete combustion?
Coal gas
carbon monoxide
carbon dioxide
nitrogen oxide
3.
Multiple Choice
Good fuels have
low ignition temperature and high calorific value
high ignition temperature and high calorific value
low ignition temperature and low calorific value
high ignition temperature and low calorific value
4.
Multiple Choice
Which one of the following gases is used in combustion?
CO
Carbon dioxide
Oxygen
Nitrogen
5.
Multiple Choice
A temperature at which the substance burns is called
melting
boiling temperature
ignition temperature
evaporation
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