EASY
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In the presence of water, ignition Temperature of paper is

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Important Questions on Combustion and Flame

EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
State any two conditions required for combustion.
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling of Fire
Why do you have to use paper or kerosene oil to start fire in wood or coal?
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
The lowest temperature at which a substance catches fire is called?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling of Fire
Define ignition temperature of a substance.
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
Coal burns in air and produces?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling of Fire
Why does a goldsmith blow air into the kerosene lamp flame with a blow-pipe?
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
The temperature of the substance should be lowered below the _____ temperature. (room / kindling)
HARD
Science>Chemistry>Combustion and Flame>Controlling of Fire
Maximum greenhouse gases are released by.
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling of Fire
Can the process of rusting be called combustion? Give reason for your answer.
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
Gases mainly responsible for the greenhouse effect are
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
Choose the option representing a set of greenhouse gases.
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
Which of the following is not true about combustion?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling of Fire
Explain why, when a burning candle is covered with an inverted gas jar, the candle gets extinguished after some time.
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
For combustion _______ is necessary?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling of Fire
Can you burn a piece of wood by burning a lighted matchstick near it? Explain.
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
The process by which heat energy is transmitted through collisions between neighboring molecules is known as?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling of Fire
What are the conditions necessary for combustion to take place?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling of Fire
Fire caused due to electrical faults should be put out using water.
EASY
Science>Chemistry>Combustion and Flame>Controlling of Fire
Which one is a supporter of combustion?
HARD
Science>Chemistry>Combustion and Flame>Controlling of Fire
How will you show that air is necessary for combustion?