Select the correct option based on statements below:
 
Assertion (A): Chlorine is an electron withdrawing group but it is ortho, para directing in electrophilic aromatic substitution.
Reason (R): Inductive effect of chlorine destabilises the intermediate carbocation formed during the electrophilic substitution, however due to the more pronounced resonance effect, the halogen stabilises the carbocation at ortho and para positions.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

Subtopic:  Haloarenes: Directive Influence of Halogen |
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The incorrect method for the synthesis of alkenes is:
1. treatment of alkynes with Na in liquid NH3
2. heating alkyl halides with alcoholic KOH
3. treating alkyl halides in aqueous KOH solution
4. treating vicinal dihalides with Zn metal
Subtopic:  Chemical Properties |
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Predict the order of reactivity of the following four isomers towards SN2 reaction.
(I) CH3CH2CH2CH2Cl
(II) CH3CH2CH(Cl)CH3
(III) (CH3)2CHCH2Cl
(IV) (CH3)3CCl
1.  (IV) > (III) > (II) > (I)
2.  (I) > (II) > (III) > (IV)
3.  (I) > (III) > (II) > (IV)
4.  (IV) > (II) > (III) > (I)
Subtopic:  Chemical Properties |
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The product formed in the following reaction sequence is 
 

1.
2. \(CH_3-CH=CH-CH_3 \)
3. \(CH_3 -CH_2 -CH = CH_2 \)
4. \(CH_3 -CH_2 -CH_2 -CH_2 -OH \)
Subtopic:  Chemical Properties |
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The correct reaction among the following is

1.  
2.
3.  \(2CH_3CH_2Br\xrightarrow[dry~ether]{Mg}CH_3CH_2CH_2CH_3\)
4.  \(2CH_3CH_2Br\xrightarrow[Ethanol]{Na}CH_3CH_2CH_2CH_3\)
Subtopic:  Chemical Properties |
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The incorrect statement regarding chirality is: 
1. A racemic mixture shows zero optical rotation 
2. SN1 reaction yields a 1:1 mixture of both enantiomers
3. The product obtained by SN2 reaction of haloalkane having chirality at the reactive site shows the inversion of configuration
4. Enantiomers are superimposable mirror images on each other
Subtopic:  Chemical Properties |
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Which of the following is suitable to synthesize chlorobenzene?
1.
2. Benzene, Cl2, anhydrous FeCl3
3. Phenol, NaNO2, HCl, CuCl
4.
Subtopic:  Haloarenes: Directive Influence of Halogen |
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The major product formed in the dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on:

1. Hofmann Rule

2. Huckel's Rule

3. Saytzeff's Rule

4. Hund's Rule

Subtopic:  Chemical Properties |
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For the following compounds, what is the correct sequence of the bond enthalpy of the "C-X" bond?

1. CH3-F < CH3-Cl > CH3-Br > CH3-I

2. CH3-Cl > CH3-F > CH3-Br > CH3-I

3. CH3-F < CH3-Cl < CH3-Br < CH3-I

4. CH3-F > CH3-Cl > CH3-Br > CH3-I

Subtopic:  Physical Properties | Chemical Properties |
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A compound that does not undergo SN1 reaction with OH- is-

1.  CH2=CH-CH2Cl 2. (CH3)3CCl 
3. 4.

Subtopic:  Chemical Properties |
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