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Introduction and Physical Properties
Isomerism & Chirality
Chemical Properties
Mechanism of Reactions
Haloarenes: Directive Influence of Halogen
Dichloromethane, Trichloromethane & Tetrachloromethane
Iodoform, Freons & DDT
Q. No.

How many dihalogen derivatives of propane are there?

1. 1 2. 2
3. 3 4. 4

Subtopic:  Isomerism & Chirality |
 53%
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 Sulphuric acid is not used during the reaction of alcohols with KI and acts as :

1. Reducing agent

2. Electron donor

3. Electron acceptor

4. Oxidising agent

Subtopic:  Mechanism of Reactions |
 66%
From NCERT
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Select the correct option based on statements below:

Assertion (A): Nitration of chlorobenzene leads to the formation of m-nitrochlorobenzene.
Reason (R): —NO2 group is an m-directing group.
 
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 |
 61%
From NCERT
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Select the correct option based on statements below:

Assertion (A): Hydrolysis of (-)-2-bromooctane proceeds with an inversion of configuration.
Reason (R): This reaction proceeds through the formation of a carbocation.
 
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:  Mechanism of Reactions |
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Select the correct option based on statements below:

Assertion (A): It is difficult to replace chlorine with -OH in chlorobenzene in comparison to that in chloroethane.
Reason (R): Chlorine carbon (—Cl) bond in chlorobenzene has a partial double bond character due to resonance.
 
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 |
 91%
From NCERT
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Select the correct option based on statements below:

Assertion (A): In monohaloarenes, further electrophilic substitution occurs at ortho and para positions.
Reason (R): The halogen atom is a ring deactivator.
 
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 |
 56%
From NCERT
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Select the correct option based on statements below:

Assertion (A): The presence of a nitro group at ortho or para position increases the reactivity of haloarenes towards nucleophilic substitution.
Reason (R): The nitro group, being an electron-withdrawing group, decreases the electron density over the benzene ring.
 
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 |
 82%
From NCERT
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Consider the given two statements:

Assertion (A): KCN reacts with methyl chloride to give methyl isocyanide.
Reason (R): \(CN^-\) is an ambident nucleophile.
Select the correct option:
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:  Chemical Properties |
 75%
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Select the correct option based on statements below:

Assertion (A): The boiling points of alkyl halides decrease in the order RI> RBr > RCl > RF
Reason (R): The boiling points of alkyl chlorides, bromides, and iodides are considerably higher than those of the hydrocarbons of comparable molecular mass.
 
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:  Introduction and Physical Properties |
 61%
From NCERT
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Select the correct option based on statements below:

Assertion (A): Phosphorus chlorides (tri and Penta) are preferred over thionyl chloride for the preparation of alkyl chlorides from alcohols.
Reason (R): Phosphorus chlorides give pure alkyl halides.
 
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. Both (A) and (R) are False.
Subtopic:  Chemical Properties |
 72%
From NCERT
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Select Chapter Topics:
filter
Introduction and Physical Properties
Isomerism & Chirality
Chemical Properties
Mechanism of Reactions
Haloarenes: Directive Influence of Halogen
Dichloromethane, Trichloromethane & Tetrachloromethane
Iodoform, Freons & DDT
Q. No.

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