MCQ
Sulphur molecule is converted into sulphur ion, when it
- ✓Gains two electrons
- BLoses two electrons
- CGains two protons
- DShares two electrons
✓
Answer
Correct option: A.
Gains two electrons
a
(a)$\frac{1}{8}{S_8} + 2{e^ - }\, \to \,{S^{2 - }}$
(a)$\frac{1}{8}{S_8} + 2{e^ - }\, \to \,{S^{2 - }}$
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 above reaction is
Which one of the following will not show geometrical isomerism
Which of the following compounds will form hydrocarbon on reaction with Grignard reagent ?
Di-imide $(N_2H_4)$ is used to reduce doubble bond of
→Match each of the compounds in Column $I$ with its characteristic reaction$(s)$ in Column $II$.
→| Column $I$ | Column $II$ |
| $(A)$ $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CN}$ | $(p)$ Reduction with $\mathrm{Pd}-\mathrm{C} / \mathrm{H}_2$ |
| $(B)$ $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OCOCH}_3$ | $(q)$ Reduction with $\mathrm{SnCl}_2 / \mathrm{HCl}$ |
| $(C)$ $\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{OH}$ | $(r)$ Development of foul smell on treatment with chloroform and alcoholic $\mathrm{KOH}$ |
| $(D)$ $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{NH}_2$ | $(s)$ Reduction with diisobutylaluminium hydride $(DIBAL-H)$ |
| $(t)$ Alkaline hydrolysis |
The major product obtained on the monobromination (with $Br_2/FeBr_3$) of the following compound $A$ is
→Calculate $\Delta H \,(kJ/mole)$ for the reaction :-
$2FeO_{(s)} + \frac{1}{2}\, O_{2(g)} \to Fe_2O_{3(g)}$
→$2FeO_{(s)} + \frac{1}{2}\, O_{2(g)} \to Fe_2O_{3(g)}$
Given $\Delta H$
$(i)\, Fe_2O_{3(s)}+3C_{(graphite)} \to 2Fe_{(s)} + 3CO_{(g)}$ $492\, kJ/mol$
$(ii)\, FeO_{(s)}+C_{(graphite)} \to Fe_{(s)} + CO_{(g)}$ $156\, kJ/mol$
$(iii)\, C_{(graphite)} + O_{2(g)} \to CO_{2(g)}$ $-393 \,kJ/mol$
$(iv)\, CO_{(g)} + \frac{1}{2}\, O_{2(g)} \to CO_{2(g)}$ $-283\, kJ/mol$
In alanylglycylleucylalanylvaline, the number of peptide linkages is $......$
→The colligative properties of a solution depend on
Choose the correct option for the following reactions.
