Ch – 8 Fire: Friend & Foe

Priya's Learning Centre

Comprehension Check:

Q.1: Mark the correct answer in each of the following:

i) Early man was frightened of _____________.

Ans: fire

ii) Ans: Fire is the result of a chemical reaction.

Q.2: From the boxes given below choose the one with the correct order of the following sentences:

i) That is fire.

ii) A chemical reaction takes place.

iii) Energy in the form of heat and light is released.

iv) Oxygen combines with carbon and hydrogen.

Ans: vi, ii, iii, i

Working With The Text

Answer the following questions:

Q.1: What do you understand by the ‘flash point’ of a fuel ?

Ans: The ‘Flash point’ of a fuel is the temperature at which it begins to burn.

Q.2: i) What are some common uses of fire ?

Ans: Fire is used to cook food, warm our houses in winter and to generate electricity.

ii) In what sense is it…

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