Long answer questions II — task. Science State Board, Class 10.

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

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The electronic configuration of metal A is 2,8,18,1.

The metal A when exposed to air and moisture, forms B, a green layered compound. A with con.

$H_2SO_4$ forms C and D along with water. D is a gaseous compound.

Find A, B, C and D.

i. Metal (A) is .

ii. Action of Air and Moisture:

Copper gets coated with a green layer of basic (B) in the presence of

$CO_2$ and moisture.

$2Cu$ +

$O2$ +

$CO_2$ +

$H_2O$ → .

iii. In the presence of air, copper dissolves in dilute

$H_2SO_4$ to form (C) and (D).

$Cu$ +

$2H_2SO_4$ → +

$2H_2O$ .

Did you find an error?

11. Long answer questions II