AP EAMCET · Chemistry · Hydrogen
Identify the correct statements from the following.
(i) \(\mathrm{Zn}\) reacts with dilute \(\mathrm{HCl}\) and aqueous \(\mathrm{NaOH}\) solution separately and liberates hydrogen.
(ii) Ti and Zr form interstitial hydrides.
iii) The viscosity of \(\mathrm{H}_2 \mathrm{O}\) is more than the viscosity of \(\mathrm{D}_2 \mathrm{O}\).
- A (i), (ii), (iii)
- B (i), (iii)
- C (i), (ii)
- D (ii), (iii)
Answer & Solution
Correct Answer
(C) (i), (ii)
Step-by-step Solution
Detailed explanation
\[ \begin{aligned} & \text { (i) } \mathrm{Zn}(s)+2 \mathrm{HCl}(a q) \longrightarrow \\ & \mathrm{Zn}^{2+}(a q)+2 \mathrm{Cl}^{-}(a q)+\mathrm{H}_2(g) \\ & \end{aligned} \] Zn comes into contact with \(\mathrm{HCl}\) acid. It replaces the hydrogen from \(\mathrm{HCl}\)…
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