Question

4) Why are pulses atternated with crops like wheat and rice?
5) What happens when copper vessel is exposed to moist air for:
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Answer 1

Answer:

Pulses are leguminious plants which contain nitrogen fixing bacteria likeRHIZOBIUM which convert atmospheric nitrogen into ammonia . This ammonia is being used by plant in the form of protein.pulses are alternated with othercrop to full fill the demand of protein of other plant.

Copper metal when exposed toair turns green in colour due to corrosion. When copper vessel is exposed to air in rainy season, the metal reacts with gases and moisture and atmospheric gases to form a mixture of copper carbonate andcopper hydroxide. This gives a greencolour to the surface of copper metal.

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Answer 2

Answer:

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