NEET Chemistry Haloalkanes And Haloarenes MCQs

Which substrate would be least reactive in an $ext{S}_ext{N}1$ reaction?

Identify the major product X formed in the following reaction sequence:

$CH_3CH_2CH_2Br \xrightarrow{KCN} A \xrightarrow[Partial Hydrolysis]{H_3O^+} B \xrightarrow{Br_2, NaOH} X$

What is the final product when butanenitrile is subjected to partial hydrolysis followed by reaction with $Br_2$ and NaOH?

Which of the following is the major product 'C' obtained from the given reaction sequence?

$CH_3CH_2I \xrightarrow{NaCN} A \xrightarrow{H_3O^+} B \xrightarrow{Br_2, NaOH} C$

Predict the product of the following reaction sequence:

Propanoic acid $\xrightarrow{Br_2, P} A \xrightarrow{H_2O} B$

In the Hell-Volhard-Zelinsky reaction, carboxylic acids react with bromine in the presence of phosphorus. What is the major product formed when butanoic acid is treated with $Br_2$ and P, followed by hydrolysis?

Which of the following reactions can be used for the preparation of alkyl halides?

(i) $CH_3CH_2CH_2OH + HCl \xrightarrow{Anhyd. ZnCl_2}$

(ii) $CH_3CH_2CH_2OH + HBr$

(iii) $(CH_3)_3COH + HCl$

(iv) $(CH_3)_2CHOH + HI \xrightarrow{Anhyd. ZnCl_2}$

Which of the following is the most suitable reagent for converting propan-1-ol to 1-chloropropane?

What is the role of anhydrous $ZnCl_2$ in the reaction of primary alcohols with $HCl$ to form alkyl halides?

Arrange the following alcohols in increasing order of reactivity towards $HCl$: (i) Methanol (ii) Ethanol (iii) 2-propanol (iv) 2-methyl-2-propanol