Chemistry
The metals commonly used for electroplating are

Nickel, Lead and Chromium
Gold, Sodium and Potassium
Gold, Sodium and Chromium
Chromium, Copper and Nickel

ANSWER DOWNLOAD EXAMIANS APP

Chemistry
The main use of salt in the diet is to

increase the solubility of food particles in water
make the taste of food better
produce in small amounts the hydrochloric acid required for the digestion of food
ease the process of cooking

ANSWER DOWNLOAD EXAMIANS APP