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The bacteria called …................liv...

The bacteria called …................living in the roots of some plants like beans can directly absorb nitrogen from the atmosphere.

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V PUBLICATION-NON - METALS-QUESTION BANK
  1. ….............is the protective covering of the earth.

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  2. Ozone is mainly found in the …...........

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  3. The bacteria called …................living in the roots of some plant...

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  4. The element found more on earth.

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  5. The density of hydrogen is …...........than air

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  6. A gas was formed when zinc reacted with dilute hydrochloric acid. a...

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  7. Find the odd one and give reason: a) Compost, Ammonia, Urea, Factump...

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  8. A burning candle kept on the table is covered with a glass tumbler. ...

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  9. a) Write a method of preparation of hydrogen in laboratory. b) How w...

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  10. a)Some chemicals are given in the box .find out the substances require...

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  11. If hydrogen is used as a fuel, environmental pollution can be overcome...

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  12. Bleaching powder is used as for purification of water. a) Why is ble...

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  13. a) Which are the reactants used in the preparation of hydrogen in labo...

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  14. Mention two advantages of organic fertilisers.

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  15. The molecules of hydrogen and oxygen combined to form the new substanc...

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  16. In the laboratory preparation of chlorine , a) Why chlorine gas is pa...

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  17. Oxygen is prepare by heating of potassium permagnate. a) Write the c...

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  18. O, O2, O3 Various forms of oxygen are given above. a) Which among ...

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  19. Take a small quantity of sulphur in a spatula and burn it. a) Which s...

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  20. A product of industrial importance is prepared by passing a gas with g...

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