Question

Take a small quantity of the food item in a test tube​

Answer 1

Answer:

and after

Explanation:

kar diya ab kya Karen?

Answer 2

Answer:

(i) Take a small quantity of the food item in a test tube, add 10. drops of water to it and shake it. (ii) Make a paste or powder of food to be tested. (iii) Add 10 drops of caustic soda solution to the test tube