MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 17 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. |
Which among the following product is formed when ethyne undergoes hydrogenation? |
| A. | Formaldehyde |
| B. | Formic acid |
| C. | Acetaldehyde |
| D. | Acetic acid |
| Answer» D. Acetic acid | |
| 2. |
Which among the following alkynes is used as a rocket fuel? |
| A. | Ethyne |
| B. | Propyne |
| C. | But-1-yne |
| D. | Pent-1-yne |
| Answer» C. But-1-yne | |
| 3. |
Alkynes cannot be prepared from ___________ |
| A. | Ketones |
| B. | Alcohols |
| C. | Aldehydes |
| D. | Other alkynes |
| Answer» C. Aldehydes | |
| 4. |
Majority of the alkynes are not prepared from/by ___________ |
| A. | Condensation |
| B. | Acetylene |
| C. | Dehydrohalogenation |
| D. | Hydrogenation |
| Answer» E. | |
| 5. |
The major alkyne, acetylene compound is produced by which among the following application on natural gas? |
| A. | Hydrogenation |
| B. | Partial oxidation |
| C. | Cracking |
| D. | Hydrohalogenation |
| Answer» C. Cracking | |
| 6. |
Select the incorrect statement regarding terminal alkynes. |
| A. | Methylacetylene is an example of terminal alkynes |
| B. | Terminal alkynes are more acidic when compared with alkenes |
| C. | Terminal alkynes are not as acidic as alkanes |
| D. | These have a replaceable acidic hydrogen atom |
| Answer» D. These have a replaceable acidic hydrogen atom | |
| 7. |
Alkynes are more reactive than alkenes. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 8. |
WHICH_AMONG_THE_FOLLOWING_ALKYNES_IS_USED_AS_A_ROCKET_FUEL??$ |
| A. | Ethyne |
| B. | Propyne |
| C. | But-1-yne |
| D. | Pent-1-yne |
| Answer» C. But-1-yne | |
| 9. |
Which_among_the_following_product_is_formed_when_ethyne_undergoes_hydrogenation?$ |
| A. | Formaldehyde |
| B. | Formic acid |
| C. | Acetaldehyde |
| D. | Acetic acid |
| Answer» D. Acetic acid | |
| 10. |
Identify the incorrect statement? |
| A. | Alkynes exists in gaseous state |
| B. | They are soluble in water |
| C. | They are soluble in organic solvents |
| D. | Alkynes have a very good boiling point |
| Answer» C. They are soluble in organic solvents | |
| 11. |
The transformation into carboxylic acids of the alkynes takes place with the help of which among the following reagents? |
| A. | Potassium chlorate |
| B. | Potassium permanganate |
| C. | Potassium dichromate |
| D. | Potassium chloride |
| Answer» C. Potassium dichromate | |
| 12. |
Alkynes cannot be prepared from |
| A. | Ketones |
| B. | Alcohols |
| C. | Aldehydes |
| D. | Other alkynes |
| Answer» C. Aldehydes | |
| 13. |
Majority of the alkynes are not prepared from/ by: |
| A. | Condensation |
| B. | Acetylene |
| C. | Dehydrohalogenation |
| D. | Hydrogenation |
| Answer» E. | |
| 14. |
The major alkyne, acetylene compound is produced by which among the following application on natural gas |
| A. | Hydrogenation |
| B. | Partial oxidation |
| C. | Cracking |
| D. | Hydrohalogenation |
| Answer» C. Cracking | |
| 15. |
Select the incorrect statement regarding terminal alkynes |
| A. | Methylacetylene is an example of terminal alkynes |
| B. | Terminal alkynes are more acidic when compared with alkenes |
| C. | Terminal alkynes are not as acidic as alkanes |
| D. | These have a replaceable acidic hydrogen atom |
| Answer» D. These have a replaceable acidic hydrogen atom | |
| 16. |
Select the incorrect statement |
| A. | The addition reactions occur more frequently in the alkenes than the alkynes |
| B. | The pi system of the alkynes gets weakened when they lose the pi atoms |
| C. | Alkynes readily undergo oligomerization |
| D. | Alkynes do not undergo polymerization |
| Answer» E. | |
| 17. |
Alkynes are more reactive than alkenes’ State true or false |
| A. | False |
| B. | True |
| Answer» B. True | |