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Combustion

Air has to be...

Question

Air has to be blown around coal for it's easy combustion.

A

True

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B

False

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Solution

The correct option is A
True

If air is blown around coal, then air circulation increases the supply of oxygen gas which will help in the complete combustion of coal. Supply of sufficient amount of oxygen gas lets the coal burn completely.

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For the easy combustion of coal, air has to be blown around it.

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easy True / False questions,

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difficult True / False questions,

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easy multiple choice questions and

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difficult multiple choice questions. If a question is selected at random from the question bank, what is the probability that it will be an easy question given that it is a multiple choice question ?

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easy True/False questions,

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difficult True/False questions,

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easy multiple choice questions and

400

difficult multiple choice questions. If a question is selected at random from the question bank, then the probability that it will be an easy question given that it is a multiple choice question is:

Q. Question 22
Indicate whether the following statements are true or false. Also write the false statements in their correct form.
(a) Air is necessary for combustion.
(b) Magnesium is a non-combustible metal.
(c) Carbon dioxide is an excellent fire extinguisher.
(d) Calorific value of wood is higher than that of coal

Q. Indicate whether the following statements are True or False. Also, write the false statements in their correct form.
(a) Air is necessary for combustion.
(b) Magnesium is a non-combustible metal.
(c) Carbon dioxide is an excellent fire extinguisher.
(d) Calorific value of wood is higher than that of coal.

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