Question

Q1. Frame meaningful sentences with the help of the given phrases:
1. pur fire out
2. pur fire into
3. go after
4. go with
5. he known for
6. be known as
7 7. cut in
8. cut on
9. be held by
10. run away
11. run for
12. make me sick
13. signed off
14. to be afraid of
15. give up​

Answer 1

Explanation:

Early man was frightened of fire.

(ii) Fire is the result of a chemical reaction.

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Question 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.

(i) (ii) (iii) (iv)

(ii) (iii) (i) (iv)

(iv) (iii) (ii) (i)

(iv) (ii) (iii) (i)

ANSWER:

(iv) (ii) (iii) (i)

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Question 1:

What do you understand by the ‘flash point’ of a fuel?

ANSWER:

The temperature at which a fuel begins to burn is called its flash point.

Page No 119