The correct order of decreasing reactivity of the following compounds:

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

with an electrophile (E⁺)  is :

Out of the above alkenes, the ones that can give 2-methyl butane on hydrogenation are:

$\mathrm{Ethyne}<mspace\; width="1em"></mspace>\stackrel{?}{\to }$ $\mathrm{Benzene}$ 

The reagent used in the above conversion is:

1. Cr₂O₃

2. Alc. KOH

3. Red hot Fe

4. NaNH₂/liq.NH₃

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

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

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

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 ( \(S_{N^2}\))

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

 An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentan-3-one.
The IUPAC name of ‘A’ is :

1. 3-Ethylpent-2-ene

2. 3-Ethylpent-2- yne

3. 2-Ethylpent-3-ene

4. 3-Ethylpent-4-yne

$\mathrm{Benzene}+{\mathrm{CH}}_3\mathrm{Cl}\stackrel{{\mathrm{AlCl}}_3}{\to }<mspace\; width="1em"></mspace>{\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_3$

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