Single Choice

Hydrogenation of $$C_{6}H_{5}CHOHCOOH$$ over $$Rh -Al_{2}O_{3}$$ gives :

A$$C_{6}H_{5}CH_{2}COOH$$
B$$C_{6}H_{11}CHOHCOOH$$
Correct Answer
C$$C_{6}H_{5}CHOHCH_{2}OH$$
D$$C_{6}H_{11}CH_{2}COOH$$

Solution

Hydrogenation of $$C_6H_5CHOHCOOH$$ over $$Rh -Al_2O_3$$ gives $$C_6H_{11}CHOHCOOH$$ Hare $$Rh-Al_{2}O_{3}$$ is used as a catalyst to hydrogenate phenyl group. This catalyst hydrogenates each carbon atom in phenyl group thus removing each double bond in phenyl group.

SIMILAR QUESTIONS

Hydrocarbons

Ethylene is converted to ethane in the presence of $$Ni$$ at $$300^{0}C$$ . In this reaction the hybridization of carbon changes from :

Hydrocarbons

A hydrocarbon $$'X'$$ adds on one mole of hydrogen to give another hydrocarbon and decolourised bromine water. $$'X'$$ reacts with $${ KMnO }_{ 4 }$$ in the presence of acid to give two moles of the same carboxylic acid. The structure of $$'X'$$ is:

Hydrocarbons

Compound(s) that on hydrogenation produce(s) optically inactive compound(s) is(are):

Hydrocarbons

Which one of the following alkenes will react faster with $$H_2$$ under catalytic hydrogenation conditions?

Hydrocarbons

Write structures of all the alkenes which on hydrogenation give 2 - methylbutane.

Hydrocarbons

Give the formula and name of $$A, B, C$$ and $$D$$ in the following equations: $$C_2H_2 \xrightarrow {H_2}\ A \xrightarrow{H_2}\ B\ \underset{-HBr}{\xrightarrow {Br_2}}\ C\ \underset{-HBr}{\xrightarrow {Br_2}}\ D$$

Hydrocarbons

Addition reaction and substitution reaction are type of organic reactions. Which type of reaction is shown by ethene?

Hydrocarbons

Which one of the following alkenes will react faster with $$H_2$$ under catalytic hydrogenation conditions?

Hydrocarbons

In which case the reaction is most exothermic with $$H_2$$ Ni.

Hydrocarbons

The gas used in the hydrogenation of oils in presence of nickel as a catalyst is:

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