NCERT Exemplar XXXXVII — task. Science CBSE, Class 10.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Give long answers to the following question:

What happens when zinc granules are treated with dilute solution of

$H_2SO_4$ ,

$HCl$ ,

$HNO_3$ ,

$NaCl$ and

$NaOH$ , also write the chemical equations if reaction occurs.

When zinc granules are treated with sulphuric acid, hydrogen gas and zinc sulphate are produced.

$Zn$ +

$H_2SO_4$ →

When zinc granules are treated with hydrochloric acid, hydrogen gas and zinc chloride are formed.

Similarly, When zinc granules are treated with nitric acid, hydrogen gas and zinc nitrate are formed.

$Zn$ +

$2HNO_3$ →

Since zinc granules are treated with sodium chloride, no reaction occurs because zinc is less reactive than sodium.

When zinc granules are treated with sodium hydroxide and water, sodium zincate and hydrogen gas are produced.

$Zn$ +

$2H_2O$ +

$2NaOH$ →

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