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
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
The reagent used in the above conversion is:
1. Cr2O3
2. Alc. KOH
3. Red hot Fe
4. NaNH2/liq.NH3
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 |
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 |
Arrange the following carbanions in order of their decreasing stability:
A. \(\mathrm{H}_3 \mathrm{C}-\mathrm{C} \equiv \mathrm{C}^{-}\)
B. \(\mathrm{H}-\mathrm{C} \equiv \mathrm{C}^{-}\)
C. \(\mathrm{H}_3 \mathrm{C}-\mathrm{\bar{C}H_2}\)
1. A>B>C
2. B>A>C
3. C>B>A
4. C>A>B
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 Ethanal
Chlorination of methane takes place by:
1. Elimination
2.
3. Free radical
4.
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
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