MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Isopropyl methyl ether when treated with cold hydrogen iodide gives which of the following alcohol? |
| A. | isopropyl iodide and methyl iodide |
| B. | isopropyl alcohol and methyl iodide |
| C. | isopropyl alcohol and methyl alcohol |
| D. | isopropyl iodide and methyl alcohol |
| Answer» C. isopropyl alcohol and methyl alcohol | |
| 2. |
Which of the following way is not a method of preparation of alcohol? |
| A. | Grignard reaction |
| B. | Reduction of an aldehyde, ketone, or carboxylic acid with the appropriate reducing agent |
| C. | Substitution reaction of hydroxide or water on the appropriate alkyl halide |
| D. | Haber’s process |
| Answer» E. | |
| 3. |
Ethyl alcohol obtained by fermentation of starch or molasses is called wash, and what is it’s purity? |
| A. | 15% |
| B. | 99% |
| C. | 99.9% |
| D. | 95% |
| Answer» B. 99% | |
| 4. |
Catalytic reduction (Hydrogenation) of carbon monooxide with H2 under high pressure and temperature gives methyl alcohol. What is this process is known as? |
| A. | Baeyer’s test |
| B. | Hofmann’s reaction |
| C. | Kolb process |
| D. | BASF process |
| Answer» E. | |
| 5. |
ISOPROPYL_METHYL_ETHER_WHEN_TREATED_WITH_COLD_HYDROGEN_IODIDE_GIVES_WHICH_OF_THE_FOLLOWING_ALCOHOL??$ |
| A. | isopropyl iodide and methyl iodide |
| B. | isopropyl alcohol and methyl iodide |
| C. | isopropyl alcohol and methyl alcohol |
| D. | isopropyl iodide and methyl alcohol |
| Answer» C. isopropyl alcohol and methyl alcohol | |
| 6. |
WHICH_OF_THE_FOLLOWING_WAY_IS_NOT_A_METHOD_OF_PREPARATION_OF_ALCOHOL??$ |
| A. | Grignard reaction |
| B. | Reduction of an aldehyde, ketone, or carboxylic acid with the appropriate reducing agent |
| C. | Substitution reaction of hydroxide or water on the appropriate alkyl halide |
| D. | Haber’s process |
| Answer» E. | |
| 7. |
Among the alkenes which one produces tertiary butyl alcohol on acid hydration? |
| A. | (CH<sub>3</sub>)<sub>2</sub>C=CH<sub>2</sub> |
| B. | CH<sub>3</sub>-CH=CH-CH<sub>3</sub> |
| C. | CH<sub>3</sub>CH<sub>2</sub>CH=CH<sub>2</sub> |
| D. | CH<sub>3</sub>CH=CH<sub>2</sub> |
| Answer» B. CH<sub>3</sub>-CH=CH-CH<sub>3</sub> | |
| 8. |
Acid catalysed hydration of alkenes except ethene leads to the formation of which of the following? |
| A. | Mixture of secondary and tertiary alcohols |
| B. | Mixture of secondary and tertiary alcohols |
| C. | Secondary or tertiary alcohol |
| D. | Primary alcohol |
| Answer» B. Mixture of secondary and tertiary alcohols | |
| 9. |
Which is the only alcohol that can be prepared by the indirect hydration of alkene? |
| A. | Ethyl alcohol |
| B. | Propyl alcohol |
| C. | Isobutyl alcohol |
| D. | Methyl alcohol |
| Answer» B. Propyl alcohol | |
| 10. |
Ethyl alcohol obtained by fermentation of starch or molasses is called wash, and what is it’s purity?$ |
| A. | 15% |
| B. | 99% |
| C. | 99.9% |
| D. | 95% |
| Answer» B. 99% | |
| 11. |
15% pure ethyl alcohol (wash) on fractional distillation gives 95% ethyl alcohol by weight which is commonly known as which of the following terms? |
| A. | Wash |
| B. | Absolute alcohol |
| C. | Rectified spirit |
| D. | Methylated spirit |
| Answer» D. Methylated spirit | |
| 12. |
Which of the following steps is not used in the fermentation of starch into ethyl alcohol? |
| A. | Hydrolysis of starch into maltose by diastase present in barley |
| B. | Conversion of maltose into glucose by maltase present in yeast |
| C. | Conversion of glucose into ethanol by zymase present in yeast |
| D. | Conversion of sucrose into glucose and fructose by sucrase present in yeast |
| Answer» E. | |
| 13. |
Which of the following statements is incorrect regarding preparation of alcohols? |
| A. | Aldehydes and Ketones on catalytic reduction by [H] give primary alcohol and secondary alcohol respectively |
| B. | Ketones on reaction with Grignard’s reagent gives tertiary alcohol |
| C. | Aldehydes on reaction with Grignard’s reagent gives primary or secondary alcohol |
| D. | Alkyl halides on reaction alcoholic potash gives alcohol |
| Answer» E. | |
| 14. |
Catalytic reduction (Hydrogenation) of carbon monooxide with H2 under high pressure and temperature gives methyl alcohol. What is this process is known as? |
| A. | Baeyer’s test |
| B. | Hofmann’s reaction |
| C. | Kolb process |
| D. | BASF process |
| Answer» E. | |