Organic Chemistry Questions

The major organic product in the reaction,${\text{CH}}_3-\text{O}-\text{CH}({\text{CH}}_3{)}_2+\text{HI}\to \text{Product}$ is :

Nucleophilic addition reaction will be most favoured in :

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields :

Which of the following is not chiral?

Ethylene oxide when treated with Grignard reagent yields :

Assertion : Alkyl isocyanides in acidified water give alkyl formamides.Reason : In isocyanides, carbon first acts as a nucleophile and then as an electrophile.

The correct order regarding the electronegativity of hybrid orbitals of carbon is:

The IUPAC name of is :

In the hydrocarbon ${\text{CH}}_3-\text{CH}=\text{CH}-{\text{CH}}_2-\text{C}\equiv \text{CH}$, the state of hybridization of carbons 1, 3 and 5 are:

A strong base can abstract an $\alpha$ -hydrogen from:

How many stereoisomers does the molecule ${\text{CH}}_3\text{CH}={\text{CHCH}}_2{\text{CHBrCH}}_3$ have?

The stability of carbanions in the following (alkynyl, alkenyl, alkyl) is in the order of:

The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of:

Base strength of carbanions is in the order of:

3-Phenylpropene on reaction with $\text{HBr}$ gives (as a major product):

Which amongst the following is the most stable carbocation ?

Products of the following reaction :

Aniline in a set of reactions yielded a product D.
The structure of the product D would be :

In a set of reactions, acetic acid yielded a product D.
The structure of D would be :

The major organic product formed from the following reaction :

Which of the following gives propyne on hydrolysis?

The major product formed in the following reaction is:

The major product obtained on treatment of ${\text{CH}}_3{\text{CH}}_2{\text{CH(F)CH}}_3$ with ${\text{CH}}_3{\text{O}}^{-}/{\text{CH}}_3\text{OH}$ is:

Among the following the most stable compound is:

The major product of the reaction between an alkene and $\text{HBr}$ in the presence of peroxides is governed by:

${\text{CH}}_3{\text{CO}}_2{\text{C}}_2{\text{H}}_5$ on reaction with sodium ethoxide in ethanol gives $A$, which on heating in the presence of acid gives $B$. Compound $B$ is:

Among the following which one does not act as an intermediate in Hofmann rearrangement?

Pyridine is less basic than triethylamine because:

Correct configuration of the following is:

${\text{C}}_6{\text{H}}_5{\text{CONHCH}}_3$ can be converted into ${\text{C}}_6{\text{H}}_5{\text{CH}}_2{\text{NHCH}}_3$ by:

Assertion : Rate of hydrolysis of methyl chloride to methanol is higher in $\text{DMF}$ than in water.Reason : Hydrolysis of methyl chloride follows second order kinetics.

Assertion : Rates of nitration of benzene and hexadeuterobenzene are different.Reason : $\text{C}-\text{H}$ bond is stronger than $\text{C}-\text{D}$ bond.

Assertion : $t$ -Butyl methyl ether is not prepared by the reaction of $t$ -butyl bromide with sodium methoxide.Reason : Sodium methoxide is a strong nucleophile.

In the following, the most stable conformation of n-butane is:

Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by:

In a set of reactions, ethyl benzene yielded a product D: would be:

Which one is most reactive towards $S_{N}1$ reaction?

Which one is most reactive towards electrophilic reagent?

Which one of the following compounds has the most acidic nature?

Given are cyclohexanol (I), acetic acid (II), 2, 4, 6-trinitrophenol (III) and phenol (IV). In these the order of decreasing acidic character will be:

Which of the following statements about primary amines is ‘False’?

Acetamide is treated with the following reagents separately. Which one of these would yield methyl amine?

Which of the following reactions will not result in the formation of carbon-carbon bonds?

The reaction of toluene with ${\text{Cl}}_2$ in presence of ${\text{FeCl}}_3$ gives $X$ and reaction in presence of light gives $Y$. Thus, $X$ and $Y$ are:

The correct order of increasing reactivity of $\text{C-X}$ bond towards nucleophile in the following compound is:

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is:

What is the $\text{IUPAC}$ name of trans-2-chloro-3-iodo-2-pentene?

Which compound undergoes nucleophilic substitution reaction most easily?

Organic compound $A+{\text{NH}}_3\to B\stackrel{\Delta }{\to }C\stackrel{{\text{Br}}_2/\text{KOH}}{\to }\text{ethylamine}$. Compound $A$ is:

Which of the following compounds is most basic?

Match the compounds with their reactions/products:$(a)$ Benzaldehyde $(i)$ Phenolphthalein$(b)$ Phthalic anhydride $(ii)$ Benzoin condensation$(c)$ Phenyl benzoate $(iii)$ Oil of wintergreen$(d)$ Methyl salicylate $(iv)$ Fries rearrangement

What is the order of reactivity of $\text{PhMgBr}$ with the following:

Propionic acid with ${\text{Br}}_2/\text{P}$ yields a dibromo product. Its structure would be:

Which one the following is most reactive towards electrophilic attack?

In a ${\text{S}}_{N}2$ substitution reaction, which one of the following has the highest relative rate?

Acetophenone when reacted with a base, ${\text{C}}_2{\text{H}}_5\text{ONa}$, yields a stable compound which has the structure:

In the reaction of aniline with ${\text{NaNO}}_2/\text{HCl}$ at $0-5^{\circ }\text{C}$ followed by phenol, a coloured product C is obtained. The structure of C would be:

The state of hybridization of $C_2,C_3,C_5$ and $C_6$ of the hydrocarbon: is in the following sequence:

Which of the following reactions is an example of nucleophilic substitution reaction?

Consider the following reaction:

The product Z is:

Benzene reacts with ${\text{CH}}_3\text{Cl}$ in the presence of anhydrous ${\text{AlCl}}_3$ to form:

The mechanisms of reactions $(i)$ and $(ii)$ are:$(i)$ Isobutyl bromide $+{\text{C}}_2{\text{H}}_5\text{OH}\to$ Ether$(ii)$ Isobutyl bromide $+{\text{C}}_2{\text{H}}_5{\text{O}}^{-}\to$ Ether

Predict the product

${\text{H}}_2\text{COH}\cdot {\text{CH}}_2\text{OH}$ (ethylene glycol) on heating with periodic acid gives:

The IUPAC name of the compound having the formula $\text{CH}\equiv \text{C}-\text{CH}={\text{CH}}_2$ is:

Which of the following compounds will exhibit cis-trans (geometrical) isomerism?

Consider the following reaction:

The product $Z$ is:

Nitrobenzene can be prepared from benzene by using a mixture of conc. ${\text{HNO}}_3$ and conc. ${\text{H}}_2{\text{SO}}_4$. In this mixture, nitric acid acts as a/an:

Trichloroacetaldehyde, ${\text{CCl}}_3\text{CHO}$ reacts with chlorobenzene in presence of sulphuric acid and produces:

Aniline in a set of the following reactions yielded a coloured product Y: The structure of Y would be: