Soap helps in cleaning the clothes because

Skin helps in exchange of gases because

How does soap help in washing clothes?

Borax is uded as a cleaning agent because on dissolving in water, it gives

Hard water is not fit for washing clothes because

In human males, the testes lie in the scrotum, because it helps in the

Which one prefers to breed helps in clean water and its larvae lie parallel to surface of water? (a) Anopheles (b) Culex (c) Aedes (d) Phlebotomus

There are 20 different types of amino acids that help in the formation of proteins. They differ from each other in the structure because of their

People use a variety of methods to wash clothes. Usually after adding the soap, they ‘beat’ the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes?

(a) What is a soap? Why are soaps not suitable for washing clothes when the water is hard? (b) Explain the action of soap in removing an oily spot from a piece of cloth.

It is easy to wash clothes in hot water because its :-