Yeast is used in the production of

1. sugar
2. alcohol
3. hydrochloric acid
4. oxygen

The following is an antibiotic

1. Sodium bicarbonate
2. Streptomycin
3. Alcohol
4. Yeast

The most common carrier of communicable diseases is

1. ant
2. housefly
3. dragonfly
4. spider

The bread or idli dough rises because of

1. heat
2. grinding
3. growth of yeast cells
4. kneading