A liquid compound (x) can be purified by steam distillation only if it is:
1. Steam volatile, immiscible with water
2. Not steam volatile, miscible with water
3. Steam volatile, miscible with water
4. Not steam volatile, immiscible with water
The compound which shows metamerism is:
1. | C3H6O | 2. | C4H10O |
3. | C5H12 | 4. | C3H8O |
The correct structure of 2,6-Dimethyl-dec-4-ene is:
1. | 2. | ||
3. | 4. |
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because-
1. + R effect of groups
2. R effect of CH3 groups
3. Hyperconjugation
4. l effect of CH3 groups
Paper chromatography is an example of:
1. Partition chromatography
2. Thin layer chromatography
3. Column chromatography
4. Adsorption chromatography
1. | 2. | ||
3. | 4. |
Match list-I with list-II:
List-I | List-II | ||
(a) | Separation of aniline-water mixture | (i) | Fractional distillation |
(b) | Separation of aniline-chloroform mixture | (ii) | Distillation under reduced pressure |
(c) | Separation of glycerol from spent-lye | (iii) | Distillation |
(d) | Separation of different fractions of crude oil | (iv) | Steam distillation |
(a) | (b) | (c) | (d) | |
1. | (i) | (iii) | (ii) | (iv) |
2. | (iv) | (i) | (iii) | (ii) |
3. | (iv) | (ii) | (iii) | (i) |
4. | (iv) | (iii) | (ii) | (i) |
1. | sp2 and sp3 | 2. | sp2 and sp2 |
3. | sp3 and sp2 | 4. | sp3 and sp3 |
Assertion (A): | Chlorine is an electron-withdrawing group, yet it exhibits ortho- and para-directing behavior in electrophilic aromatic substitution. |
Reason (R): | Inductive effect of chlorine destabilises the intermediate carbocation formed during the electrophilic substitution, however due to the more pronounced resonance effect, the halogen stabilises the carbocation at ortho and para positions. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |