Circle the right answer for the following multiple choice questions. Lindlar\'s

Question

Circle the right answer for the following multiple choice questions. Lindlar's catalysis reduces an alkyne to give cis-alkene because of anti-addition of hydrogen. Alkali metals dissolved in liquid ammonia reduce an alkene to give alkene to give alkane because of anti-addition of hydrogen. Alkali metals dissolved in liquid ammonia reduce an alkyne to give trans-alkene because of radical anion intermediate. Palladium on carbon as a catalyst reduces an alkyne to alkane in the presence of water. The process of preparing an alkane from an alkene is called Hydration Hydrogenation Dehydrogenation Dehydration Reaction of ethane with bromine in the presence of sunlight gives ethane through polar mechanism ethane through radical mechanism ethyl bromide through polar mechanism ethyl bromide through radical mechanism The metal used in the preparation of Grignard reagent is Lithium Copper Zinc None of these

Explanation / Answer

10. C

2. b (Hydrogenation)

3. d (ethyl bromide through radical mechanism )

4. d(None of these) Magnesium is used .

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