Question

Que.3 Choose the correct option.
1. Yeast is used in production of
(a) Sugar () (b) Alcohol 7 (c) Oxygen ()
ii. Air has composition of
(a) Fire ( ) (b) Gases ( ) (c) Water ()
ill. Change water into vapour is called
(a) Evaporation () (b) Condensation ) c) Burning
iv. Gas which helps in burning
(a) CO2 () (b) Nitrogen () (c) Oxygen()​

Answer 1

Answer:

1. Alcohol ,2.Gases,3.Evaporation,4.Oxygen