NEET
Chemistry
Haloalkanes and Haloarenes
Previous Years Questions

MCQ (Single Correct Answer)

Which amongst the following reactions of alkyl halides produces isonitrile as a major product? (A) $$\mathrm{R-X+HCN\to}$$ (B) $$\mathrm{R-X+AgCN\to}$...
Choose the correct sequence of reagents in the conversion of 4-nitrotoluene to 2-bromotoluene.
Identify the product in the following reaction ...
Identify 'X' in the following reaction. ...
The given compound is an example of _________....
The major product of the following chemical reaction is : ...
The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on?
Which of the following alkane cannot be made in good yield by Wurtz reaction?
Elimination reaction of 2-Bromo-pentane to form pent-2-ene is :(A) $$\beta $$-Elimination reaction(B) Follows Zaitsev rule(C) Dehydrohalogenation reac...
The compound C7H8 undergoes the following reactions : The product ‘C’ is...
Identify $$A$$ and predict the type of reaction. ...
Consider the reaction, CH3CH2CH2Br + NaCN $$ \to $$ CH3CH2CH2CN + NaBr This reaction will be the fastest in ...
Which of the following biphenyls is optically active ?
In an SN1 reaction on chiral centers, there is
The reaction of C6H5CH $$=$$ CHCH3 with HBr produces
Which of the following compounds will undergo racemisation when solution of KOH hydrolyses? ...
In the replacement reaction The reaction will be most favourable if M happens to be...
Which of the following compounds undergoes nucleophilic substitution reaction most easily?
Consider the reactions. The mechanisms of reactions (i) and (ii) are respectively...
In the following reaction the product 'X' is...
Which one is most reactive towards SN1 reaction?
The correct order of increasing reactivity of C$$-$$X bond towards nucleophile in the following compounds is ...
Which of the following reactions is an example of nucleophilic substitution reaction?
In a SN2 substitution reaction of the type R $$-$$ Br + Cl$$-$$ $$\buildrel {DMF} \over \longrightarrow $$ R$$-$$Cl + Br$$-$$ which one of the foll...
CH3 $$-$$ CHCl $$-$$ CH2 $$-$$ CH3 has a chiral centre. Which one of the following represents its R-configuration?
Which of the following is not chiral?
Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism?
Which of the following is least reactive in a nucleophilic sibstitution reaction?
Reactivity order of halides for dehydrologenation is
Z in the above reaction sequence is ...
An organic compound A(C4H9Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative then, A...
obtained by chlorination of n-butane will be...
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