NCERT Lab Manual I — 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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Answer the following questions:

1. Why does the colour of copper sulphate solution change, when an iron nail is dipped in it?

Due to the formation of greenish iron sulphate solution
Due to the formation of reddish iron sulphate solution
Due to the formation of greenish copper sulphate solution
Due to the formation of reddish copper sulphate solution

2. Why does the following reaction takes place?

$2I^–$ (aq) +

$Cl_2$ (aq) —>

$2l^–$ (aq) +

$I_2$ (solvated).

Displacement reaction
Combination reaction
Decomposition reaction
Oxidation reaction

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