Question

Paheli kept some water in a beaker for heating .She observed that tiny bubbles

appeared before the water started to boil. She boiled the water for about 5minutes and filled it

in a bottle up to the brim and kept the air tight till it cooled down to room temperature.

(i) Why did the tiny bubbles appear? (1)

(ii) Do you think tiny bubbles will appear on heating the water taken out from the bottle?

Justify your answer.(2)​

Answer 1

$\huge \boxed {\sf \underline {\pink{Ꭺꪀδwꫀя}}}$

Paheli kept some water in a beaker for heating .She observed that tiny bubbles

appeared before the water started to boil. She boiled the water for about 5minutes and filled it

in a bottle up to the brim and kept the air tight till it cooled down to room temperature.

(i) tiny bubbles appear

Answer 2

$\huge \boxed {\sf \underline {\pink{Ꭺꪀδwꫀя}}}$

Paheli kept some water in a beaker for heating .She observed that tiny bubbles

appeared before the water started to boil. She boiled the water for about 5minutes and filled it

in a bottle up to the brim and kept the air tight till it cooled down to room temperature.

(i) tiny bubbles appear

Answer 3

$\huge \boxed {\sf \underline {\pink{Ꭺꪀδwꫀя}}}$

Paheli kept some water in a beaker for heating .She observed that tiny bubbles

appeared before the water started to boil. She boiled the water for about 5minutes and filled it

in a bottle up to the brim and kept the air tight till it cooled down to room temperature.

(i) tiny bubbles appear