Question

A man took 375 ml of water in a beaker and dissolved 2-3 teaspooms of sugar in it and also added half a spoon of powder 'A' to the solution in the warm place. After 4-5 hours he observed the smell of alcohol coming from that solution.
Here powder 'A' added is of
1) yeast
2) lactobacillus
3) Paramecium
4) Amoeba

Answer 1

paramecium or lactobacillus
is powder A added of

Answer 2

please pick out one ans