The number of primary amines of the formula are:
1. 1
2. 3
3. 4
4. 5
An isomer of ethanol is-
1. | Methanol | 2. | Diethyl ether |
3. | Acetone | 4. | Dimethyl ether |
The compounds that show geometrical isomerism among the following are:
a. 2-Butene
b. Propene
c. 1-Phenylpropene
d. 2-Methylbut-2-ene
1. a, b
2. c, d
3. a, b, c
4. a, c
Paper chromatography is an example of-
1. Partition chromatography
2. Thin layer chromatography
3. Column chromatography
4. Adsorption chromatography
The \(C - H\) bond distance is longer in -
1. | \(C_2H_2\) | 2. | \(C_2H_4\) |
3. | \(C_2H_6\) | 4. | \(C_2H_2Br_2\) |
1. 2–Bromo-3–methylbutanoic acid
2. 2-Methyl-3-bromobutanoic acid
3. 3-Bromo-2-methylbutanoic acid
4. 3-Bromo-2,3-dimethylpropanoic acid.
Compare the stability of the two resonating structures given below and mark the correct option:
1. (I) is more stable than (II)
2. (II) is more stable than (I)
3. (I) and (II) both have the same stability
4. None of the above
The effect that makes 2,3–dimethyl-2-butene more stable than 2-butene is-
1. Resonance
2. Hyperconjugation
3. Steric effect
4. Inductive effect
0.284 g of an organic substance gave 0.287 g AgCl in a carius method for the estimation of halogen. The percentage of Cl in the compound is-
1. 5%
2. 18%
3. 25%
4. 33%
The latest technique for isolation, purification and separation of organic compounds is -
1. | Crystallisation | 2. | Distillation |
3. | Sublimation | 4. | Chromatography |