Question

Answer the following questions:
1. On the basis of the experimental set up given below, answer the
questions:
(a)
(b)
Fig. 6.2: Experiment to show that air is
essential for burning
a) Why does the flame burns with ease in set- a?
b) What would you conclude by looking at the flame of set-c?​

Answer 1

Answer:

(a) In first case, candle burns without any problem.

(i) Flame does not flicker off.

(ii) Candle burns unaffected.

Candles burns continuously because air flows steadily in the chimney without any interruption from the space available at the bottom because of wooden blocks.

B) The role of air in the process of burning

Oxygen present in air supports combustion. Without oxygen burning is not possible.