Requirement of Separation of Substances: Taking out useful substances from a mixture is usually the main reason for separation of substances. Sometimes, we also need to separate substances when we need to use different components in different ways.
Methods of separation: To separate a mixture we have to use such a property that one constituent of the mixture has and the others do not.
Which of the following are correct ? (a) Separation of substances is required to remove harmful material. (b) Separation can be done in liquids, solids and gases. (c) Solid mixture can be separated on the basis of different colour, shape, size, weight, etc. | |||
Right Option : D | |||
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Which of the following is not a separation technique ? | |||
Right Option : C | |||
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Crude petroleum is a mixture of which of the following components : (a) Petrol (b) diesal (c) kerosene (d) petroleum gas | |||
Right Option : D | |||
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