NEET Practice Questions (MCQs) with Answers & Solutions

Which of the following alkyne on treatment with H₂(2 mole)/ Pt gives an optically inactive compound ?

Which alkyne yields butanoic acid (CH3CH2CH2CO2H) as the only organic product on treatment with ozone followed by the hydrolysis?

Nitration of which of the following reactant gives maximum % of meta product (using HNO₃/H₂SO₄)?

The action of AlCl₃ in Friedel Craft's reaction is:

n-Butylbenzene on oxidation with hot alkaline KMnO₄ gives:-

Consider the following sequence of reactions.

${\mathrm{C}}_6{\mathrm{H}}_6 + {\mathrm{CH}}_3\mathrm{CH}={\mathrm{CH}}_2\underset{\mathrm{heat}}{\overset{{\mathrm{H}}_3{\mathrm{PO}}_4}{\to }}\mathrm{A}\underset{2.{\mathrm{H}}_3{\mathrm{O}}^{+}, \mathrm{heat}}{\overset{1.{\mathrm{O}}_2,\mathrm{Heat}}{\to }}\mathrm{B}+\mathrm{C}$

The products (B) and (C) are

$\mathrm{Ph}-{\mathrm{CO}}_2\mathrm{H}\stackrel{{\mathrm{SOCl}}_2}{\to }\mathrm{A}\stackrel{{\mathrm{Me}}_2\mathrm{NH}}{\to }\mathrm{B}\stackrel{\left(\mathrm{c}\right)}{\to }\mathrm{Ph}-\mathrm{CHO}$, unknown reagent (c) is:

p-Toluidine reacts with benzene diazonium chloride to form compound, which on boiling with aq. H₂SO₄ give .......... products:

Which of the following benzene ring substituents is deactivating but ortho-para directing?

Which of the following substance will increase the acidity of phenol?