The optically active compound among the following is-
1. | Glycerine | 2. | Acetaldehyde |
3. | Glyceraldehyde | 4. | Acetone |
In Duma's method of estimation of nitrogen, 0.35 g of an organic compound gave 55 ml of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be:
(Aqueous tension at 300 K = 15 mm)
1. 16.45
2. 27.45
3. 44.45
4. 35.45
The IUPAC name of the above mentioned compound is -
1. 3, 4-Dimethylpentanoyl chloride
2. 1-Chloro-1-oxo-2,3-dimethylpentane
3. 2-Ethyl-3-methylbutanoylchloride
4. 2, 3-Dimethylpentanoyl chloride
The arrangement in decreasing order of stability of H3, H5,(CH3)2H and (CH3)3 free radicals is-
1. H3 > H5 > (CH3)2H > (CH3)3
2. (CH3)3 > (CH3)2H > H5 > H3
3. H5 > H3 > (CH3)2H > (CH3)3
4. (CH3)3 > (CH3)2H > H3 >H5
The most stable carbocation among the following is:
1. | 2. | ||
3. | 4. |
The Prussian blue colour obtained during the test of nitrogen by Lassaigne's test is due to the formation of-
1. | Fe4[Fe(CN)6]3 | 2. | Na3[Fe(CN)6] |
3. | Fe(CN)3 | 4. | Na4[Fe(CN)5NOS] |
0.2 g of an organic compound on complete combustion produces 0.44 g of CO2. The percentage of carbon is -
1. 50%
2. 60%
3. 70%
4. 80%
The best method used for the separation of naphthalene and benzoic acid from their mixture is -
1. Sublimation
2. Chromatography
3. Crystallisation
4. Distillation
The total number of resonating structures (excluded the given structure) formed by the given molecule are :
1. | 2 | 2. | 3 |
3. | 4 | 4. | 5 |
The carbocation among the following that doesn't get stabilized by resonance is :
1. | 2. | ||
3. | 4. |