IIT JEE : Purification Of Organic Compounds QUESTIONS AND ANSWERS :: part1 : 16 to 20
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
16.Chromatographic technique was introduced by |
| Duma (1803) |
| Kjeldhl (1903) |
| Tswett (1906) |
| Lavosier. |
17.Naphthalene can be purified by |
| Sublimation |
| Crystallization |
| Extraction with a solvent |
| Distillation. |
18.Sugar containing an impurity of common salt can be purified by crystallization from |
| Benzene |
| Ethanol |
| Petroleum ether |
| Water. |
19.A mixture of o-hydroxyacetophenone and hydroxyacetophenone can be separated by |
| Sublimation |
| Steam distillation |
| Fractional crystallization |
| Distillation. |
20.Separation of two substances by fractional crystallisation depends upon their difference in |
| Densities |
| Solubilities |
| Melting point |
| Boiling points. |
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