MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which is the most suitable carrier gas in gas chromatography? |
| A. | Helium |
| B. | Nitrogen |
| C. | Oxygen |
| D. | Carbon dioxide |
| Answer» B. Nitrogen | |
| 2. |
What is the paper strip developed in partition chromatography called? |
| A. | Chromatograph |
| B. | Chroma |
| C. | Chromatographing strip |
| D. | Chromatogram |
| Answer» E. | |
| 3. |
Gas chromatography can be performed in X, whereas liquid chromatography can be performed in Y. Identify X and Y. |
| A. | X = only plane surfaces, Y = only columns |
| B. | X = only columns, Y = only plane surfaces |
| C. | X = only columns, Y = columns or plane surfaces |
| D. | X = columns or plane surfaces, Y = only plane surfaces |
| Answer» D. X = columns or plane surfaces, Y = only plane surfaces | |
| 4. |
Which type of chromatography involves the separation of a mixture over a column of adsorbent packed in a glass tube? |
| A. | Thin layer chromatography |
| B. | Partition chromatography |
| C. | Column chromatography |
| D. | Gas liquid chromatography |
| Answer» D. Gas liquid chromatography | |
| 5. |
The mobile phase in chromatography can comprise of which of the following? |
| A. | Gas or liquid |
| B. | Liquid or solid |
| C. | Solid or gas |
| D. | Liquid only |
| Answer» B. Liquid or solid | |
| 6. |
Paper chromatography is a type of which chromatography? |
| A. | Column chromatography |
| B. | Thin layer chromatography |
| C. | Adsorption chromatography |
| D. | Partition chromatography |
| Answer» E. | |
| 7. |
Thin layer chromatography is used to estimate drugs in formulation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
In column chromatography, identify the mobile and stationary phase from the following. |
| A. | Solid, Liquid |
| B. | Liquid, Solid |
| C. | Gas, Liquid |
| D. | Solid, Solid |
| Answer» C. Gas, Liquid | |
| 9. |
Which is not used as an absorbent in adsorption chromatography? |
| A. | Silica gel |
| B. | Alumina |
| C. | Potassium permanganate |
| D. | Starch |
| Answer» D. Starch | |
| 10. |
Which of the following is the apparatus for differential extraction? |
| A. | Separatory funnel |
| B. | Porous sheet |
| C. | Packed column |
| D. | Electric motor |
| Answer» B. Porous sheet | |
| 11. |
Identify the example of compounds separated by steam distillation method. |
| A. | Glycerol-spent lye mixture in soap industry |
| B. | Aniline-water mixture |
| C. | Chloroform and aniline mixture |
| D. | Different fractions of crude oil in petroleum industry |
| Answer» C. Chloroform and aniline mixture | |
| 12. |
In fractional distillation, vapors of low boiling point component ascend to the top of the column. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
What is the basis for the process of distillation? |
| A. | Difference in melting point |
| B. | Difference in temperature |
| C. | Difference in pressure |
| D. | Difference in boiling point |
| Answer» E. | |
| 14. |
In crystallization, the compound dissolved in a solvent is more soluble in what temperature? |
| A. | Room temperature |
| B. | Lower temperature |
| C. | Higher temperature |
| D. | Very low temperature |
| Answer» D. Very low temperature | |
| 15. |
The purification method where solid substances change from solid to vapor state without passing through the liquid state is called as which of the following? |
| A. | Sublimation |
| B. | Crystallization |
| C. | Distillation |
| D. | Differential extraction |
| Answer» B. Crystallization | |