Chlorination of methane takes place by -

1. Elimination

2. SN1

3. Free radical

4. SN2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 83%
From NCERT
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The products formed after ozonolysis of Pent-2-ene are -

1. Ethanal, Methanal

2. Ethanal, Propanal

3. Ethanal, Butanal

4. Ethanal, Ethanal

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 89%
From NCERT
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Among the two isomers given above, the reason behind higher boiling point of one isomer as compared to the order is :

1. Cis - less polar than trans

2. Trans - more polar than cis

3. Cis - more intermolecular forces

4. Trans - more dipole-dipole interactions

Subtopic:  Aliphatic Hydrocarbon- Physical Properties |
 58%
From NCERT
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Incorrect statement regarding aromaticity among the following is:

1.  The compound should have a planar structure.
2. The π–electrons of the compound are completely delocalized in the ring.
3. The total number of π–electrons present in the ring should be equal to (4n + 2) π electrons, where n = 0, 1, 2 … etc. This is known as Huckel’s rule. 
4.  The compound should have a linear structure.

Subtopic:  Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
 88%
From NCERT
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Not an aromatic molecule is/are :

1. 2.
3. 4. All of the above

Subtopic:  Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
 74%
From NCERT
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The catalyst used in the conversion of benzene into acetophenone is done -

1) Anhydrous AlCl3

2) HNO3

3) HCl

4) Heating

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 86%
From NCERT
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The effect of branching on an alkane :

1. Increases its boiling point

2. Decreases its boiling point

3. Doesn’t change its boiling point

4. None of the above

Subtopic:  Aliphatic Hydrocarbon- Physical Properties |
 87%
From NCERT
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The product obtained on the addition of HBr to propene in the absence and presence of benzoyl peroxide are respectively

1. 1-Bromopropane, 2-Bromopropane

2. 2-Bromopropane, 1-Bromopropane

3. 1-Bromopropanol, 2-Bromopropanone

4. 2-Bromopropanone, 1-Bromopropanol

Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
 82%
From NCERT
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Decreasing order of acidic behavior of benzene, n-hexane, and ethyne is -

1. Hexane > Ethyne > Benzene

2. Benzene > Hexane > Ethyne

3. Ethyne > Benzene > Hexane

4. Benzene > Ethyne > Hexene

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 84%
From NCERT
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Incorrect statement towards reactivity of benzene is:

1. It undergoes electrophilic substitution reactions very easily
2. Nucleophiles are attracted by a benzene ring
3. Benzene is a planar molecule 
4. It has 12 sigma bonds

Subtopic:  Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
 69%
From NCERT
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