Which of the following is not the characteristic of arenes:
1. More stability
2. Resonance
3. Delocalization of π electrons
4. Electrophilic addition

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 76%
From NCERT
AIPMT - 1998
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

When 2-Bromopentane reacts with ethanolic KOH, the main product that is formed is:

1. Cis-2-pentene 2. Trans-2-pentene
3. 1-pentene 4. None of the above
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
From NCERT
AIPMT - 1998
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Phenylacetylene undergoes a reaction with dilute H2SO4 in the presence of HgSO4 to yield:
 

1. 2.
3. 4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 74%
From NCERT
AIPMT - 1999
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Compound 'A' on chlorination gives compound 'B'. 'B' reacts with alc. KOH to give gas 'C' which decolorizes Baeyer reagent. Ozonolysis of compound 'C' gives only HCHO compound. Compound 'A' is

1. C2 H6 2. C2H4
3. C4H10 4. C2H5Cl

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 65%
From NCERT
AIPMT - 1999
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The increasing order of electrophilic substitution for the following compounds is:

 

1. IV<I<II<III 2. III<II<I<IV
3. I<IV<III<II 4. II<III<I<IV
Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 74%
From NCERT
AIPMT - 2000
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

In Friedel craft reaction, Toluene can be prepared by:

1. C6H6 + CH3Cl

2. C6H5Cl + CH4

3. C6H6 + CH2Cl2

4. C6H6 + CH3COCl

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 90%
From NCERT
AIPMT - 2000
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

The reagent used to convert propene to 1-propanol is:

1. H2O, H2SO4

2. B2H6, H2O2, OH

3. Hg(OAc)2, NaBH4/H2O

4. Aq. KOH

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 73%
From NCERT
AIPMT - 2000
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

On ozonolysis, the alkene that gives the following product is:

1.
2. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}=\mathrm{CHCH}_2 \mathrm{CH}_3\)
3. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}=\mathrm{CHCH}_3\)
4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 91%
From NCERT
AIPMT - 2001
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A compound possessing optical isomerism provided it has the molecular formula C7H16, would be:

1. 2,3-Dimethyl pentane 2. 2,2-Dimethyl butane
3. 2-Methyl hexane 4. None of the above
Subtopic:  Alkanes, Alkenes and Alkynes - Conformations and Hybridisation |
 73%
From NCERT
AIPMT - 2001
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

The compound  on reaction with NaIO4 in the presence of KMnO4 gives:

1. CH3COCH3

2. CH3COCH3 + CH3COOH

3. CH3COCH3 + CH3CHO

4. CH3CHO + CO2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 72%
From NCERT
AIPMT - 2003
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch