Paper chromatography is an example of:
1. Partition chromatography
2. Thin layer chromatography
3. Column chromatography
4. Adsorption chromatography
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
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 most stable carbocation among the following is:
1. | 2. | ||
3. | 4. |
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. |
The compound that is most difficult to protonate is:
1. | 2. | ||
3. | 4. |
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) |