JEE CHEMISTRY MCQ: HYDROCARBONS

1 Medium

1 of 1

Understanding +4 | -1

Which of the following groups deactivates the benzene ring towards electrophilic substitution reaction?

View answer and explanation

Correct option: B

-{NO}_2

Option B (

-{NO}_2

) is correct because the nitro group is an electron-withdrawing group that deactivates the benzene ring towards electrophilic substitution due to its -M effect.

More Questions from HYDROCARBONS

Practice All Chapter MCQs →

\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: