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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


Solution

(a) The statement is true.
Air is necessary for combustion.

(b) The statement is false.
Magnesium is a combustible metal.

(c) The statement is true.
Carbon dioxide is an excellent fire extinguisher.

(d) The statement is false.
Calorific value of coal is higher than that of wood.

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