Among Group 16 elements, which one does NOT show -2 oxidation state?
The $$\mathrm{E}^{\circ}$$ value for the $$\mathrm{Mn}^{3+} / \mathrm{Mn}^{2+}$$ couple is more positive than that of $$\mathrm{Cr}^{3+} / \mathrm{Cr}^{2+}$$ or $$\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}$$ due to change of
The reagents with which glucose does not react to give the corresponding tests/products are
A. Tollen's reagent
B. Schiff's reagent
C. HCN
D. $$\mathrm{NH}_2 \mathrm{OH}$$
E. $$\mathrm{NaHSO}_3$$
Choose the correct options from the given below:
Identify the correct reagents that would bring about the following transformation.
(i) $$\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}$$
(ii) $$\mathrm{CrO}_3$$
(i) $$\mathrm{BH}_3$$
(ii) $$\mathrm{H}_2 \mathrm{O}_2 / \stackrel{\ominus}{\mathrm{O}} \mathrm{H}$$
(iii) PCC
(i) $$\mathrm{BH}_3$$
(ii) $$\mathrm{H}_2 \mathrm{O}_2 / \stackrel{\ominus}{\mathrm{O}} \mathrm{H}$$
(iii) alk. $$\mathrm{KMnO}_4$$
(i) $$\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}$$
(ii) PCC