The catalyst used in the conversion of benzene into acetophenone is:

1. Anhydrous AlCl3

2. HNO3

3. HCl

4. Heating

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 87%
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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 |
 88%
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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 |
 83%
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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%
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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%
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Ethyne ? Benzene 

The reagent used in the above conversion is:

1. Cr2O3

2. Alc. KOH

3. Red hot Fe

4. NaNH2/liq.NH3

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 88%
From NCERT
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Out of the above alkenes, the ones that can give 2-methyl butane on hydrogenation are-

1. a, b 2. b, c
3. a, c 4. a, b, c
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 75%
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The correct order of decreasing reactivity of the following compounds:

Chlorobenzene, 2,4-Dinitrochlorobenzene, and p-Nitrochlorobenzene

with an electrophile (E+)  is :

1. Chlorobenzene > p–Nitrochlorobenzene > 2,4-Dinitrochlorobenzene
2. p – Nitro chlorobenzene > 2, 4-Dinitrochlorobenzene > Chlorobenzene 
3. Chlorobenzene  > 2, 4-Dinitrochlorobenzene > p-Nitrochlorobenzene
4. 2, 4-Dinitrochlorobenzene > Chlorobenzene > p-Nitrochlorobenzene 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 69%
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The products of ozonolysis of 1,2-dimethyl benzene (o-xylene) are -

1. Methylglyoxal, 1, 2-dimethylglyoxal, and glyoxal

2. Methylglyoxal, 1, 3-dimethylglyoxal, and glyoxal

3. Methylglyoxal, 1, 4-dimethylglyoxal, and glyoxal

4. Methylglyoxal, 1, 5-dimethylglyoxal, and glyoxal

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 72%
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Non aromatic molecule(s)among the following is/are :

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

Subtopic:  Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
 75%
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