Nane a substance which is :
made from water gas.

Nane a substance which is : used for illuminating country houses

Nane a substance which is : consumed as a drink.

Name Two substances which add taste to water.

Water gas is

A zymogen is an inactive substance which is made active with the help of difference enzymes. Pepsinogen is secreted as a zymogen into the stomach to

Thaumatin is sweetest substance which is obtained from:

How can a substance be made amorphous?

Choose from the list of substances - Acetylene gas, ayua fortis, coke, brass, barium chloride, bronze, platinum The substance which is an alloy of zinc, copper and tin.

State the term : (Do not give examples) A substance which contains water of crystallisation.

The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards the source of light. The same chemical substance P has an opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R. What is the general name of the chemical substance like P ? Name another substance which belongs to this class of chemical substances.