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प्रश्न
Select homogeneous and heterogeneous mixtures from the following:
The salt solution, petrol, and water, sand, and charcoal, alcohol and water, air dissolved in water, air, seawater, fruit juices, mist, brass.
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उत्तर
Homogeneous mixture: Salt solution, alcohol, and water, air dissolved in water, seawater, brass.
Heterogeneous mixture: Sand and charcoal, air, fruit juice, mist, petrol, and water.
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संबंधित प्रश्न
What is meant by a substance?
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.
Name the process you would use to separate a mixture of two miscible liquids (like acetone and water).
Give two examples of the following type of mixture.
gas-gas
Name the components present in the following mixture:
Tap water
Name the components present in the following mixture:
Bronze
Explain the term mixtures.
Write the sequence of steps you would use for making tea. (Use the words: mixture, dissolve, filtrate and residue).
Can we separate alcohol dissolved in water by using a separating funnel? If yes, then describe the procedure. If not, explain.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
