What do you mean by anti depressants?
Name one acid preservative used to preserve the food.
What is the parent compound of sulpha drugs?
Why does 70% sugar syrup act as a preservative?
Give two uses of dettol.
What do you mean by hypnotic drug?
Name one chemical which preserves colourless fruit juices.
What does sodium benzoate actually do when it is mixed with fruit juices or squash?
What do you mean by food preservation?
