Multiple Choice Question Answer XI — 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. Which of the following statements is correct

A chemical equation tells us about the substances involved in a reaction
A chemical equation informs us about the symbols and formulae of the substances involved in a reaction
A chemical equation tells us about the atoms or molecules of the reactants and products involved in a reaction
All are correct

2.

$Zn$ (s) +

$H_2SO_4$ (aq) →

$ZnSO_4$ (aq) +

$H_2$ (g) is an example of

Endothermic reaction
Evolution of gas
Precipitation reaction
Change in colour

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