CBSE class 6 Science Chemistry Chapter water

Water

Q1: We do not use water for making products in industries. True/ False

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Ans:

False

Q2: We get water from:

1. River
2. Lakes
3. Well
4. All of these

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Ans:

All of these.

Q3: Water present in ocean and sea is ___________________ for drinking.

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Ans:

Unfit.

Q4: What are salty water?

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Ans:

Water in which many salts are dissolved.

Q5: Name the source of saline water.

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Ans:

ocean and sea

Q6: Water spilled on a floor dries up because of ____________________.

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Ans:

evaporation

Q7: Name the phenomenon responsible for drying of clothes on a cloth line.

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Ans:

Evaporation

Q8: Water vapour carry away salt with it? True/ False

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Ans:

False

Q9: On _____________ water changes in to water vapour.

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Ans:

Heating

Q10: On_______________ water changes into ice.

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Ans:

Cooling

Q11: Can we convert water into water vapour without heating it?

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Ans:

No

Q12: Name the source of heat that heats water bodies and form water vapour.

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Sunlight

Q13: Why we are not able to notice water vapour from bucket full of water kept in sunlight?

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Ans:

Because evaporation taking place here is a slow process.

Q14: Plants need water to:

1. Grow
2. Cook food
3. None of these
4. Both a and b.

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Ans:

Both a and b.

Q15: Name the two process by which water vapour enters air.

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Ans:

Evaporation and transpiration