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

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

(i) What are some common uses of fire?

(ii) In what sense is it a “bad master”?

What are the three main ways in which a fire can be controlled or put out?

Why does a burning candle go out when you blow on it?

Spraying water is not a good way of putting out an oil fire or an electrical fire. Why not?

What are some of the things you should do to prevent a fire at home and in the school?

Fill in the blanks in the sentences below with words from the box. You may use a word more than once.

(i) Gandhiji’s life was devoted to the ________________ of justice and fair play.

(ii) Have you insured your house against ______________?

(iii) Diamond is nothing but ____________ in its pure form.

(iv) If you put too much coal on the fire at once you will ______________ it.

(v) Smoking is said to be the main _____________ of heart disease.

(vi) When asked by an ambitious writer whether he should put some ___________ into his stories, Somerset Maugham murmured, “No, the other way round”.

(vii) She is a _____________ copy of her mother.

(viii) It is often difficult to _____________ a yawn when you listen to a long speech on the value of time.

One word is italicised in each sentence. Find its opposite in the box and fill in the blanks.

(i) You were required to keep all the doors open, not ____________.

(ii) PUPIL: What mark did I get in yesterday’s Math’s test?

TEACHER: You got what you get when you add five and five and ___________ ten from the total.

(iii) Run four kilometers a day to preserve your health. Run a lot more to __________ it.

(iv) If a doctor advises a lean and lanky patient to reduce his weight further, be sure he is doing it to _____________ his income.

(v) The world is too much with us; late and soon, Getting and ___________ we lay waste our powers.

Use the words given in the box to fill in the blanks in the sentences below.

(i) The cat chased the mouse ____________ the lawn.

(ii) We were not allowed to cross the frontier. So we drove _________ it as far as we could and came back happy.

(iii) The horse went _______________ the winning post and had to be stopped with difficulty.

(iv) It is not difficult to see ____________ your plan. Anyone can see your motive.

(v) Go ____________ the yellow line, and then turn left. You will reach the post office in five minutes.