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Chemistry CBSE Live product
Class 10 (2026-27)
Chemical reactions and equations
Annual Revision I
4.
Word equation to balanced chemical equation
Question:
2
m.
Choose the best answer:
1.
Choose the balanced equation for the following chemical reaction.
Calcium oxide + water→ Calcium hydroxide
\(CaO\) + \(H_2O\) → \(Ka(OH)_2\)
\(CuO\) + \(H_2O\) → \(Ca(OH)_2\)
\(CaO\) + \(H_2O\) → \(Ca(OH)_2\)
\(CaO\) + \(H_3O\) → \(Ca(OH)_2\)
2.
In the equation \(xAl + yHCl \rightarrow zAlCl_3 + wH_2\), identify the correct values for the coefficients:
2, 6, 2, 3
1, 1, 2, 2
2, 3, 2, 3
2, 6, 3, 2
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