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प्रश्न
Three mixtures A, B and C are obtained by stirring three different solids in water taken in separate beakers. When mixture A is allowed to stand for some time, then its particles settle at the bottom of the beaker. When a beam of light is passed through mixture A in a dark room, the path of light becomes visible when observed from the side of the beaker. When mixture B is allowed to stand for a considerable time, even then its particles do not settle down. Mixture B, however, scatters the beam of light just like mixture A. The particles of mixture C do not settle down on keeping and it also does not scatter a beam of light passing through it.
What are the mixtures like A known as ?
What are the mixtures like B known as ?
What are the mixtures like C known as ?
Name the phenomenon exhibited by A and B which occurs on passing a beam of light through them.
Name one mixture each which is like (i) A (ii) B, and (iii) C.
उत्तर
- Mixtures like A are known as suspensions.
- Mixtures like B are known as colloids.
- Mixtures like C are known as true solutions.
- The phenomenon exhibited by A and B, which occur on passing a beam of light through them, is called Tyndall effect.
- i. Mud water mixture is like A.
ii.Soap solution is a mixture like B.
iii. Sugar solution is a mixture like C.
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