MCQ
The dissociation constant of two acids $H{A_1}$ and $H{A_2}$ are $3.14 \times {10^{ - 4}}$ and $1.96 \times {10^{ - 5}}$ respectively. The relative strength of the acids will be approximately
- A$1:4$
- ✓$4:1$
- C$1:16$
- D$16:1$
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$(a)$ Heat of combustion reaction
$(b)$ Heat of formation reaction
$(c)$ An exothermic reaction
$(d)$ Not neutralization reaction
Reason : $Si -O -Si$ linkages are moisture sensitive.
Give the total number of monochloro products(including stereo isomers), which are possible in the above reaction.
$N _2 O _3, N _2 O _5, P _4 O _6, P _4 { O }_7, H _4 P _2 O _5, H _5 P _3 O _{10}, H _2 S _2 O _3, H _2 S _2 O _5$
List $-I$
$(A){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {C_6}{H_6} + CO + HCl\,\xrightarrow{{AlC{l_3}}}\,{C_6}{H_5}CHO$
$(B){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {C_6}{H_5} + C{H_3}$ $\xrightarrow{{Cr{O_2}C{l_2}}}\,{C_6}{H_5}CHO$
$(C){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {C_6}{H_5}C{H_2}Br\, + \,C{H_3}Br$ $\xrightarrow{{Na/ether}}\,{C_6}{H_5}C{H_2}C{H_3}$
$(D){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {C_6}{H_6}\, + \,{(C{H_3})_2}C = C{H_2}$ $\xrightarrow{{{H_2}S{O_4}}}\,{C_6}{H_5}C{(C{H_3})_3}$
List $-II$
$(a)$ Friedel-Crafts reaction
$(b)$ Wurtz-Fitting reaction
$(c)$ Gattermann-Koch Aldehyde synthesis
$(d)$ Etard’s reaction