MCQ
Oxygen gas can be prepared from solid $KMn{O_4}$ by
- ✓Strongly heating the solid
- BTreating the solid with ${H_2}$ gas
- CDissolving the solid in dil. ${H_2}S{O_4}$
- DDissolving the solid in dil. $HCl$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
|
List $- I$ |
List $- II$ |
| $(a)$ Zymase | $(i)$ Stomach |
| $(b)$ Diastase | $(ii)$ Yeast |
| $(c)$ Urease | $(iii)$ Malt |
| $(d)$ Pepsin | $(iv)$ Soyabean |
Choose the correct answer from the options given below
$2X_2(s) + 3Y^{2+} (aq) \to 2X_2^{3+}(aq) + 3Y(s)$
$1$. propanal
$2$. trichloroethanal
$3$. methanal
$4$. ethanal
$5$. benzaldehyde