MCQ
Three graphs for $R(CH_2)_nCOONa$ are as - Correct value of 'n' may be correctly matched as -


- ✓$I-16,II-12,III-8$
- B$I-8,II-12,III-16$
- C$I-12,II-8,III-16$
- D$I-12,II-12,III-12$

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${C_6}{H_5} - N{O_2} + 6[H] \to {C_6}{H_5} - N{H_2} + 2{H_2}O$
The reducing agent used in this reaction is …….
Roasted gold ore $+CN^-+ H_2O \xrightarrow{{{O_2}}} [x] + OH^-;$ $[x] + Zn \rightarrow [y] + Au$
$[x]$ and $[y]$ are :

$(a)\,\,q + w$ $ (b)\,\,q$
$(c)\,\,w$ $ (d)\,\,H -TS$