Q1 of 18 Page 119

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

‘Flash point' of a fuel is the temperature at which the fuel begins to burn. This temperature is different for different substances. ‘Flash point' is also called ‘kindling temperature' of the fuel.


More from this chapter

All 18 →
1

Mark the correct answer in each of the following.

(i) Early man was frightened of


(a) lightning and volcanoes.


(b) the damage caused by them.


(c) fire.


(ii) (a) Fire is energy.


(b) Fire is heat and light.


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

 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.

 2

What are some common uses of fire?

 2

In what sense is it a "bad master"?