Unsaturated carbon compounds undergo _____ reactions with hydrogen in the presence of palladium or nickel catalyst.

Reduction

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Substitution

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Addition

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Elimination

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Solution

The correct option is C
Addition

Unsaturated carbon compounds undergo addition reactions with hydrogen in the presence of palladium or nickel catalyst.

${CH}_{2} = {CH}_{2} H_{2} - ------ \to N i - c a t a l y s t {CH}_{3} - {CH}_{3}$

Ethene Ethane

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Q. Unsaturated hydrocarbons undergo _____ reaction with hydrogen in the presence of palladium or nickel catalyst.

Q. Question 7
Oils on treating with hydrogen in presence of palladium or nickel catalyst form fats. This is an example of
(a) Addition reaction
(b) Substitution reaction
(c) Displacement reaction
(d) Oxidation reaction

Q. Question 7
Oils on treating with hydrogen in presence of palladium or nickel catalyst form fats. This is an example of
(a) Addition reaction
(b) Substitution reaction
(c) Displacement reaction
(d) Oxidation reaction

When a vegetable oil is treated with hydrogen in the presence of nickel (or palladium) catalyst, it forms a fat. This is an example of :
(a) anodising reaction (b) substitution reaction (c) displacement reaction (d) addition reaction

Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho and para halo compounds. The reaction is

(a) electrophilic elimination reaction

(b) electrophilic substitution reaction

(d) nucleophilic substitution reaction

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Unsaturated carbon compounds undergo _____ reactions with hydrogen in the presence of palladium or nickel catalyst.

The correct option is C Addition Unsaturated carbon compounds undergo addition reactions with hydrogen in the presence of palladium or nickel catalyst. CH2=CH2H2−−−−−−−→Ni−catalystCH3−CH3 Ethene Ethane

The correct option is C
Addition

Unsaturated carbon compounds undergo addition reactions with hydrogen in the presence of palladium or nickel catalyst.

${CH}_{2} = {CH}_{2} H_{2} - ------ \to N i - c a t a l y s t {CH}_{3} - {CH}_{3}$

Ethene Ethane