Which isomer of pent-2-ene will have a higher boiling point and why?

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 |
 61%
Level 2: 60%+
Hints

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%
Level 1: 80%+
Hints

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 |
 90%
Level 1: 80%+
Hints

advertisementadvertisement

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 |
 78%
Level 2: 60%+
Hints

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 |
 71%
Level 2: 60%+
Hints

The products formed after ozonolysis of Pent-2-ene are:

1. Ethanal and Methanal 2. Ethanal and Propanal
3. Ethanal and Butanal 4. Ethanal and  Ethanol
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 90%
Level 1: 80%+
Hints

advertisementadvertisement

What type of mechanism governs the chlorination reaction of methane?

1. Elimination
2. Substitution nucleophilic unimolecular (\(S_{N^1}\))
3. Free Radical
4. Substitution nucleophilic bimolecular ( \(S_{N^2}\))

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 84%
Level 1: 80%+
Hints

Benzene+CH3ClAlCl3C6H5CH3

The mechanism & intermediate involved in the above reaction are:

1. Aromatic electrophilic substitution & carbocation

2. Aromatic Nucleophilic substitution & carbanion

3. Aromatic free radical substitution & Free radical

4. Carbene based substitution reaction & Carbene

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
 86%
Level 1: 80%+
Hints

An unsaturated hydrocarbon 'A' reacts with two molecules of H2 and upon reductive ozonolysis A gives butane-1,4-dial, ethanal, and propanone.

The IUPAC name of A is:

1. 2-Methylocta-2,6-diene

2. 2-Methylocta-1,5-diene

3. 3-Methylocta-2,6-diene

4. 2-Methylocta-1,6-diene

Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
 74%
Level 2: 60%+
Hints

advertisementadvertisement

The type of radicals that can be formed as intermediates during monochlorination of 2-methylpropane is-

1. Primary and tertiary radicals

2. Two types of primary radicals

3. Primary and secondary radicals

4. Two types of tertiary radical

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 78%
Level 2: 60%+
Hints