HARD
Earn 100

Maximum greenhouse gases are released by.

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Important Questions on The Atmosphere

EASY
Which fossil fuel produces ammonia when distilled in the absence of air?
EASY
Write one example each for fossil fuels in a solid and liquid state.
EASY
Which of the following variety of coal contains the highest percentage of carbon? 
EASY
State any two conditions required for combustion.
MEDIUM
What are the conditions necessary for combustion to take place?
EASY
The temperature of the substance should be lowered below the _____ temperature. (room / kindling)
MEDIUM
How should different kinds of fire be put out?
HARD
How will you show that air is necessary for combustion?
EASY
Gases mainly responsible for the greenhouse effect are
MEDIUM
Why does a goldsmith blow air into the kerosene lamp flame with a blow-pipe?
EASY
A chemical process in which a substance reacts with oxygen to give off heat is called?
MEDIUM
Can you burn a piece of wood by burning a lighted matchstick near it? Explain.
EASY
Choose the option representing a set of greenhouse gases.
MEDIUM
Can the process of rusting be called combustion? Give reason for your answer.
EASY
The lowest temperature at which a substance catches fire is called?
EASY
Which of the following is not true about combustion?