MCQ
Last molecule of $\ce{H_2O}$ is evolved from $\ce{H_2O_2}$ by :
- ✓Crystallisation
- BEvaporation
- CDistillation under reduced pressure
- DElectrolysis
✓
Answer
Correct option: A.
Crystallisation
The last molecule of water is separated from hydrogen peroxide by crystallization.$ 90\%$ solution of hydrogen peroxide is concentrated by cooling with solid carbon dioxide and ether bath. The crystals of hydrogen peroxide are separated, melted and refrozen.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The $"O - N - O"$ bond angle is maximum in
→In which of the following species $p\pi = d\pi $ bond is present but $p\pi = p\pi $ bond is absent ?
→Two mole of an ideal gas is expanded isothermally and reversibly from $1$ litre ot $10$ litre at $300\,K$. The enthalpy change (in $kJ$) for the process is .....$kJ$
→Which of the following combinations of quantum numbers is allowed?
Which of the following is a biodegradable polymer?
The conjugate acid of ${S_2}O_8^{2 - }$ is
→Name the type of wall used in the above figure.
Which of the following statement is correct for the reaction ? $\ce{CaO(s) + CO_2(g) \rightarrow CaCO_3(s)}; \Delta_\text{r}\text{H}^\circ=-178.3\text{ kJ mol}^{-1}$
→Oxidation state of $\ce{Fe}$ in Sodium Nitroprusside is :
→The enamel on teeth contains: