sblock Elements - Result Question 9
####5. The strength of 11.2 volume solution of $H _2 O _2$ is [Given that molar mass of
$H=1 g mol^{-1}$ and $O=16 g mol^{-1}$ ]
(a) $1.7 %$
(b) $34 %$
(c) $13.6 %$
(2019 Main, 8 April II)
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Answer:
Correct Answer: 5. (b)
Solution:
- Saline or ionic hydrides produce $H _2$ with $H _2 O$.
$$ \stackrel{\oplus}{M} \stackrel{\oplus}{H}+H _2 O \longrightarrow H _2 \uparrow+M OH $$
Thus, statement (1) is correct.
