Name some compounds where the presence of water molecules provides colour ot those substance.

Name the pigment which provides colour to the skin.

Assertion : The presence of water molecules makes separation of ions easier in electrolyte. Reason : The presence of water molecules in electrolyte decreases the resistance of electrolyte.

Assertion: The presence of water molecules makes separation of ions easier in electrolyte. Reason: The presence of water molecules in electrolyte decreases the resistance of electrolyte.

The decomposition of organic compounds, in the presence of oxygen without the development of odoriferous substances , is called

Union of two or more molecules of the same or different compound with or without the elimination of water to form a new substance is known as

What happens when aluminium reacts with NaOH in presence of water molecules ?

An organism A which cannot move from one place to another, makes a simple food B from the substances C and D available in the environment. This food is made in the presence of a green coloured substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. The food H gives a blue-blank colour with dilute iodine solution. (a) What is (i) organism A (ii) food B, and (iii) food H? (b) What are C and D ? (c) Name (i) green coloured substance E, and (ii) organ F. (d) What is the prcoess G ?