Organic Reactions & Conversions · JEE Main previous year questions

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The reagent neutral ferric chloride is used to detect the presence of ____________

1. A.sulphide ion and alcoholic $-\mathrm{OH}$ group.
2. B.acetate ion and phenolic $-\mathrm{OH}$ group.
3. C.sulphide ion and phenolic $-\mathrm{OH}$ group.
4. D.acetate ion and alcoholic $-\mathrm{OH}$ group.

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1. A.t-Butyl ethyl ether
2. B.2,2-Dimethyl butane
3. C.2-Methyl pent-1-ene
4. D.2-Methyl prop-1-ene

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Consider the following reactions: $\mathrm{PC}{\mathrm{l}}_3+{\mathrm{H}}_2\mathrm{O}\to \mathrm{A}+\mathrm{HCl}$ $\mathrm{A}+{\mathrm{H}}_2\mathrm{O}\to \mathrm{B}+\mathrm{HCl}$ The number of ionisable protons present in the product B is ____.

1. A.PCC oxidation
2. B.Ozonolysis
3. C.${\mathrm{BH}}_3$, ${\mathrm{H}}_2{\mathrm{O}}_2/{}^{-}\mathrm{OH}$ followed by PCC oxidation
4. D.$\mathrm{HBr}$, hydrolysis followed by oxidation by ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$.

Experimentally reducing a functional group cannot be done by which one of the following reagents?

1. A.$\mathrm{Pt}\text{-}C/{\mathrm{H}}_2$
2. B.$Na/{\mathrm{H}}_2$
3. C.$\mathrm{Pd}\text{-}C/{\mathrm{H}}_2$
4. D.$Zn/{\mathrm{H}}_2\mathrm{O}$

In the following sequence of reactions, $${\mathrm{C}}_3{\mathrm{H}}_6\stackrel{{\mathrm{H}}^{+}/{\mathrm{H}}_2\mathrm{O}}{\to }\mathrm{A}\underset{\mathrm{dil}\mathrm{KOH}}{\overset{\mathrm{KIO}}{\to }}\mathrm{B}+\mathrm{C}$$ The compounds B and C respectively are :-

1. A.$\mathrm{C}{\mathrm{I}}_3\mathrm{COOK},\mathrm{HCOOH}$
2. B.$\mathrm{C}{\mathrm{I}}_3\mathrm{COOK},\mathrm{C}{\mathrm{H}}_3\mathrm{I}$
3. C.$\mathrm{C}{\mathrm{H}}_3\mathrm{I},\mathrm{HCOOK}$
4. D.$\mathrm{CH}{\mathrm{I}}_3,\mathrm{C}{\mathrm{H}}_3\mathrm{COOK}$