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When salt is dissolved in water, the salt molecules:   

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Important Questions on Separation of Substances

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Which one of the following is solution?
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Fill in the blank using the right word:
We should drink _____ (clean/distilled) water.
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The polar ice caps are formed due to:
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_____ is the substance that dissolves in a solvent.
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Daily human activities like bathing in the river does not cause pollution.
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Correct the following sentence by changing the underlined word.

Filtration and condensation are used to remove soluble impurities from water.

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Write [G] for good habits and [B] for bad food habits.

We should not drink enough water. [ ]

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Describe how water can become polluted. What can we do to keep water clean?
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Distinguish between.

Soluble and Insoluble impurities.

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Which of the following is not soluble in water?
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The process of filtration is used to remove
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 Polluted water causes _____ in humans.
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The process by which the water droplets melt in the clouds and fall on the ground is called _____.
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Write three ways to make water safe for drinking.
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Fill in the blank with an appropriate word:

Water is used to put out _____ (fire/air).

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Chemicals like chlorine, bleaching powder or potassium permanganate are added to the water to make it 
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The solute and solvent together form a _____.
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Why do we need to filter or boil water before drinking?
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Choose the right word and fill in the blank:

We should not throw waste in _____. (dustbin/water bodies)