Fructose reduces Tollen's reagent due to

• asymmetric carbons

• primary alcoholic group

• secondary alcoholic group

• enolisation of fructose followed by conversion to aldehyde by base

In the following reaction,

             ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2\mathrm{Br} \underset{\left(\mathrm{ii}\right)\hspace{0.17em}{\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{\left(\mathrm{i}\right) \mathrm{Mg}, \mathrm{Ether}}{\to }}\mathrm{X}, \mathrm{the} \mathrm{product} \text{'}\mathrm{X}\text{'} \mathrm{is}$

• C₆H₅CH₂OCH₂C₆H₅

• C₆H₅CH₂OH

• C₆H₅CH₃

• C₆H₅CH₂CH₂C₆H₅

The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds

• III > II > I

• II > I > III

• I > III > II

• I > II > III

Match the compounds given in List I with List II and select the suitable option using the codes given below.

• A   B   C   D

  4   1   3   2

• A   B   C   D

  4   2   3    1

• A   B   C   D

  2   3   4   1

• A   B   C   D

  2   1   4    3

An alkene having molecular formula C₈H₁₂ on ozonolysis yields glyoxal and 2, 2-dimethyl butane-l, 4-dial. The structure of alkene is

In a set of reactions acetic acid yielded a product D.

${\mathrm{CH}}_3\mathrm{COOH} \stackrel{{\mathrm{SOCl}}_2}{\to }\mathrm{A} \underset{\mathrm{anhy}. {\mathrm{AlCl}}_3}{\overset{\mathrm{Benzene}}{\to }}\mathrm{B} \stackrel{\mathrm{HCN}}{\to }\mathrm{C}\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }\mathrm{D}$

The structure of D would be

67.

${\mathrm{CH}}_3-\mathrm{CO}-{\mathrm{CH}}_3 \stackrel{{\mathrm{SeO}}_2}{\to } \mathrm{X} + \mathrm{Se} + {\mathrm{H}}_2\mathrm{O}: \mathrm{X} \mathrm{is}$

• 

• 

• 

• None of the above

Which of the following will give Cannizzaro reaction?

• CH₃CHO

• CH₃COCH₃

• (CH₃)₃C-CHO

• CH₃CH₂CHO

The product 'A' is

• succinic acid

• melonic acid

• oxalic acid

• maleic acid

Which of the following is a Gattermann aldehyde synthesis?