Chemistry
Which one of the following is used as preservative for foodstuff ?

Glycerine
Sodium Benzoate
Sodium Chloride
Picric acid

ANSWER DOWNLOAD EXAMIANS APP

Chemistry
The BOD values of water indicate the

Amount of organic debris
Amount of oxygen used for biochemical oxidation
Amount of ozone used for biochemical oxidation
Amount of oxygen used for biochemical reduction

ANSWER DOWNLOAD EXAMIANS APP