MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Chloroform fraction is eluted from the column by passing chloroform through the column which acts as ____________ |
| A. | Eluter |
| B. | Eluant |
| C. | Elution |
| D. | None of the mentioned option |
| Answer» D. None of the mentioned option | |
| 2. |
The mixture of petroleum ether and benzene is used in the elution ratio of ____________ |
| A. | 1 : 2 |
| B. | 1 : 5 |
| C. | 1 : 9 |
| D. | 1 : 12 |
| Answer» D. 1 : 12 | |
| 3. |
Which of the following is separated through column chromatography? |
| A. | Chlorophyll and carotenoids |
| B. | Inorganic cations or complexes |
| C. | Sugar derivatives |
| D. | Amino acids formed by hydrolysis of a protein molecule |
| Answer» B. Inorganic cations or complexes | |
| 4. |
The elution power of a solvent is determined by ____________ |
| A. | Its overall polarity |
| B. | The polarity of the stationary phase |
| C. | The nature of the sample components |
| D. | All of the mentioned |
| Answer» E. | |
| 5. |
The components of the mixture in column chromatography are eluted in order of ____________ |
| A. | Increasing polarity and decreasing distribution ratio |
| B. | Increasing polarity and increasing distribution ratio |
| C. | Decreasing polarity and increasing distribution ratio |
| D. | Decreasing polarity and decreasing distribution ratio |
| Answer» C. Decreasing polarity and increasing distribution ratio | |
| 6. |
The correct order of increasing strength of adsorption is ____________ |
| A. | Alkanes >> Esters >> Aldehydes >> Phenols >> Ketones |
| B. | Aldehydes >> Phenols >> Ketones >> Esters >> Alkanes |
| C. | Aldehydes >> Ketones >> Esters >> Alkanes >> Phenols |
| D. | Alkanes >> Esters >> Ketones >> Aldehydes >> Phenols |
| Answer» E. | |
| 7. |
Column chromatography is based on the principle of _______________ |
| A. | Ion-exchange |
| B. | Exclusion principle |
| C. | Differential adsorption |
| D. | Absorption |
| Answer» D. Absorption | |
| 8. |
THE_MIXTURE_OF_PETROLEUM_ETHER_AND_BENZENE_IS_USED_IN_THE_ELUTION_RATIO_OF?$ |
| A. | 1 : 2 |
| B. | 1 : 5 |
| C. | 1 : 9 |
| D. | 1 : 12 |
| Answer» D. 1 : 12 | |
| 9. |
Chloroform_fraction_is_eluted_from_the_column_by_passing_chloroform_through_the_column_which_acts_as$ |
| A. | Eluter |
| B. | Eluant |
| C. | Elution |
| D. | None of the mentioned option |
| Answer» D. None of the mentioned option | |
| 10. |
Which of the following is separated through column chromatography? |
| A. | Chlorophyll and carotenoids |
| B. | Inorganic cations or complexes |
| C. | Sugar derivatives |
| D. | Amino acids formed by hydrolysis of a protein molecule |
| Answer» B. Inorganic cations or complexes | |
| 11. |
The elution power of a solvent is determined by |
| A. | Its overall polarity |
| B. | The polarity of the stationary phase |
| C. | The nature of the sample components |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
The components of the mixture in column chromatography are eluted in order of |
| A. | Increasing polarity and decreasing distribution ratio |
| B. | Increasing polarity and increasing distribution ratio |
| C. | Decreasing polarity and increasing distribution ratio |
| D. | Decreasing polarity and decreasing distribution ratio |
| Answer» C. Decreasing polarity and increasing distribution ratio | |
| 13. |
The correct order of increasing strength of adsorption is |
| A. | Alkanes >> Esters >> Aldehydes >> Phenols >> Ketones |
| B. | Aldehydes >> Phenols >> Ketones >> Esters >> Alkanes |
| C. | Aldehydes >> Ketones >> Esters >> Alkanes >> Phenols |
| D. | Alkanes >> Esters >> Ketones >> Aldehydes >> Phenols |
| Answer» E. | |
| 14. |
What is the factor responsible for the separation in column chromatography? |
| A. | Polarity differences between the solvent |
| B. | Polarity differences between the solute |
| C. | Polarity indifference between the solvent |
| D. | Polarity indifference between the solute |
| Answer» C. Polarity indifference between the solvent | |
| 15. |
Arrange the following compounds in order of their increasing adsorption tendencies. |
| A. | Cellulose >> starch >> calcium carbonate >> alumina |
| B. | Cellulose >> starch >> alumina >> charcoal |
| C. | Charcoal >> cellulose >> alumina >> starch |
| D. | Calcium carbonate >>; alumina >> starch >> cellulose |
| Answer» B. Cellulose >> starch >> alumina >> charcoal | |
| 16. |
Column chromatography is based on the principle of |
| A. | Ion-exchange |
| B. | Exclusion principle |
| C. | Differential adsorption |
| D. | Absorption |
| Answer» D. Absorption | |