NCERT Exemplar XVI — 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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1. Complete the missing components/variables given as 'x' and 'y' in the following reactions.

$Cu$ (s) +

$2AgNO_3$ (aq) →

$Cu(NO_3)_2$ (aq) + x(s)

$Cu$ (s) +

$2AgNO_3$ (aq) →

$Cu(NO_3)_2$ (aq) +

Therefore, in the above reaction, x is (s);

$Ag$ gets replaced by

$Cu$ .

2. Which among the following changes are exothermic or endothermic in nature?

Dilution of sulphuric acid.

$H_2SO_4$ +

$2H_2O$ →

$2H_3O^+$ +

$SO_4{^2}{-}$ +

The process of dilution of sulfuric acid with water is because it involves the evolution of heat.

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43. NCERT Exemplar XVI