# NEET Chemistry Haloalkanes and Haloarenes Question Bank

### done Question - Assertion And Reason

 Assertion: $CHC{{l}_{3}}$ is stored in transparent bottles. Reason: $CHC{{l}_{3}}$ is oxidised in dark. [AIIMS 1996] Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Addition of bromine to trans-2-butene yields meso-2, 3-dibromobutane Reason: Bromine addition to an alkene is an electrophilic addition. [IIT-JEE (Screening) 2001] Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Alkyl halides are soluble in organic solvents. Reason: p-dichlorobenzene possesses low melting point. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: $CC{{l}_{4}}$ is not a fire extinguisher. Reason: $CC{{l}_{4}}$ is insoluble in water. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Aqueous hydrohalogen acids are used to prepare alkyl halides from alkenes. Reason: Hydrogen iodide readily reacts with alkenes to form alkyl halides. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Alkyl halides form alkenes when heated above$300{}^\circ C$. Reason: $C{{H}_{3}}C{{H}_{2}}I$ react slowly with strong base when compared to$C{{D}_{3}}C{{H}_{2}}I$. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Halogen acids react with alcohols to form haloalkanes. Reason: Order of reactivity of halogen acids $HCl>HBr>HI$ Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: is less reactive  than towards reactions. Reason: Tertiary alkyl halides react predominantly by ${{S}_{N}}1$ mechanism. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Electron withdrawing groups in aryl halides decrease the reactivity towards nucleophilic substitution. Reason: 2, 4-Dinitrochlorobenzene is less reactive than chlorobenzene. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Aryl halides undergo electrophilic substitutions more readily than benzene. Reason: Aryl halide gives a mixture of o- and p- products. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Addition of $B{{r}_{2}}$ to cis-but-2-ene is stereoselective. Reason: $S{{N}^{2}}$ reactions are stereospecific as well as stereoselective. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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 Assertion: Optically active 2-iodobutane on treatment with NaI in acetone undergoes recemization. Reason: Repeated Walden inversions on the reactant and its product eventually gives a racemic mixture. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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• question_answer13) Assertion: Nucleophilic substitution reaction on an optically active alkyl halide gives a mixture of enantiomers. Reason: The reaction occurs by $S{{N}^{1}}$ mechanism. Read the assertion and reason carefully to mark the correct option out of the options given below:

A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C) If assertion is true but reason is false.

D) If the assertion and reason both are false.

E) If assertion is false but reason is true.

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