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JEE CHEMISTRY MCQ: HYDROCARBONS

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Lindlar’s catalyst is:

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Correct option: A

\mathrm{Pd} - \mathrm{CaC}{\mathrm{O}_3}

deactivated by lead acetate

Option A (

\mathrm{Pd} - \mathrm{CaC}{\mathrm{O}_3}

deactivated by lead acetate) is the correct definition of Lindlar's catalyst, used for the partial hydrogenation of alkynes to alkenes.

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\mathrm{Ca}{\mathrm{C}_2} + {\mathrm{H}_2}\mathrm{O} \to X\xrightarrow{{{\mathrm{O}_3}/\frac{{{\mathrm{H}_2}\mathrm{O}}}{{\mathrm{O}{\mathrm{H}^ + }}}}}\mathrm{HCOOH} + \mathrm{HCOOH},X\;\mathrm{is}

In benzene, there is a delocalisation of π-electrons. Hence, each π-electron is attached by….carbon nuclei. Which statement is false? Assertion (A) In comparison to ethyl chloride, it is not easy to carry outnucleophilic substitution on vinyl chloride.

Reason (R) Vinyl group is an electron donating. If 2-oxopropanal and methanal are obtained by the reductive ozonolysis of compound (A), then the number of

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