JEE CHEMISTRY MCQ: HYDROCARBONS

1 Medium

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Analyzing +4 | -1

Which among the following is very strong

o - ,\,p -

directing group?

View answer and explanation

Correct option: D

- \mathrm{NHR}

Option D (

-\mathrm{NHR}

) is correct because alkylamino groups are stronger activating and directing groups than amino groups due to the electron-donating effect of the alkyl group.

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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

\sigma

-bonds presents in Fischer-Tropsch process is used in the manufacture of: