Question

3. Platinum and gold metals can be dissolved in
a. Nitric acid
b. Aqua regia c. Sulphuric acid
4. Which acid causes oil and butter rancid?
a. Lactic acid
b. Butyric acid c. Acetic acid
5. Acid present in sour curd is
a. Lactic acid
b. Citric acid
c. Formic acid
To get relief from wasp sting, rub the spot with a dilute solution of
a. Sour curd
b. Lemon juice c. Vinegar​

Answer 1

Answer:

3.Aqua region

4.Butyric acid

5.Lactic acid

6.Baking soda