MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 20 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. |
Ethylene on reaction with bromine forms which among the following product? |
| A. | BrH2C-CH2Br |
| B. | BrH2C=CH2Br |
| C. | Br2HC=CHBr2 |
| D. | Br2HC-CHBr2 |
| Answer» B. BrH2C=CH2Br | |
| 2. |
4-chlorobut-1-ene is the name of which among the following alkenes? |
| A. | CH2Cl-CH2=CH-CH2 |
| B. | CH2Cl-CH2-CH-CH2 |
| C. | CH2Cl=CH2-CH=CH2 |
| D. | CH2Cl-CH2-CH=CH2 |
| Answer» E. | |
| 3. |
Which among the following alkenes is used in the manufacturing of plastics? |
| A. | Butadiene |
| B. | 1,2-butadiene |
| C. | 1,3-butadiene |
| D. | 2-butadiene |
| Answer» D. 2-butadiene | |
| 4. |
Which among the following is not colourless? |
| A. | Methene |
| B. | Ethene |
| C. | Propene |
| D. | Butene |
| Answer» C. Propene | |
| 5. |
Identify the one which shows E-Z mechanism? |
| A. | 3-methylpent-2-ene |
| B. | 2-methylpent-2-ene |
| C. | Methyl-3-pent-2-ene |
| D. | 2,3-methylpentene |
| Answer» B. 2-methylpent-2-ene | |
| 6. |
Identify the incorrect statement regarding the synthesis of alkenes. |
| A. | Cracking of a hydrocarbon yields alkenes |
| B. | The reactions are exothermic |
| C. | Zeolite catalyst helps in the synthesis of alkenes |
| D. | The synthesis of alkenes is otherwise known as reforming |
| Answer» C. Zeolite catalyst helps in the synthesis of alkenes | |
| 7. |
Identify the addition reaction which is not undergone by the alkenes? |
| A. | Mercuration |
| B. | Oxymercuration |
| C. | Hydroboration |
| D. | Halogenation |
| Answer» B. Oxymercuration | |
| 8. |
Select the incorrect statement regarding alkenes. |
| A. | In alkenes, the carbons are connected by pi bonds |
| B. | Alkenes have almost same physical properties as that of the alkanes |
| C. | Alkenes are less reactive than alkanes |
| D. | Alkenes undergo polymerization reaction |
| Answer» D. Alkenes undergo polymerization reaction | |
| 9. |
Which among these is not a structural isomer of the compound C4H8? |
| A. | But-1-ene |
| B. | But-2-ene |
| C. | But-3-ene |
| D. | 2-methylpropene |
| Answer» D. 2-methylpropene | |
| 10. |
In Alkenes the Carbon atoms are connected to each other by a ___________ |
| A. | Single bond |
| B. | Double bond |
| C. | Triple bond |
| D. | Not connected |
| Answer» C. Triple bond | |
| 11. |
4-CHLOROBUT-1-ENE_IS_THE_NAME_OF_WHICH_AMONG_THE_FOLLOWING_ALKENES?$ |
| A. | CH<sub>2</sub>Cl-CH<sub>2</sub>=CH-CH<sub>2</sub> |
| B. | CH<sub>2</sub>Cl-CH<sub>2</sub>-CH-CH<sub>2</sub> |
| C. | CH<sub>2</sub>Cl=CH<sub>2</sub>-CH=CH<sub>2</sub> |
| D. | CH<sub>2</sub>Cl-CH<sub>2</sub>-CH=CH<sub>2</sub> |
| Answer» E. | |
| 12. |
Ethylene_on_reaction_with_bromine_forms_which_among_the_following_product$ |
| A. | BrH<sub>2</sub>C-CH<sub>2</sub>Br |
| B. | BrH<sub>2</sub>C=CH<sub>2</sub>Br |
| C. | Br<sub>2</sub>HC=CHBr<sub>2</sub> |
| D. | Br<sub>2</sub>HC-CHBr<sub>2</sub> |
| Answer» B. BrH<sub>2</sub>C=CH<sub>2</sub>Br | |
| 13. |
Which among the following alkenes is used in the manufacturing of plastic? |
| A. | Butadiene |
| B. | 1,2-butadiene |
| C. | 1,3-butadiene |
| D. | 2-butadiene |
| Answer» D. 2-butadiene | |
| 14. |
Which among the following is not colourless: |
| A. | Methene |
| B. | Ethene |
| C. | Propene |
| D. | Butene |
| Answer» C. Propene | |
| 15. |
Identify the one which shows E-Z mechanism |
| A. | 3-methylpent-2-ene |
| B. | 2-methylpent-2-ene |
| C. | Methyl-3-pent-2-ene |
| D. | 2,3-methylpentene |
| Answer» B. 2-methylpent-2-ene | |
| 16. |
Identify the incorrect statement regarding the synthesis of alkenes |
| A. | Cracking of a hydrocarbon yields alkenes |
| B. | The reactions are exothermic |
| C. | Zeolite catalyst helps in the synthesis of alkenes |
| D. | The synthesis of alkenes is otherwise known as reforming |
| Answer» C. Zeolite catalyst helps in the synthesis of alkenes | |
| 17. |
Identify the addition reaction which is not undergone by the alkenes |
| A. | Mercuration |
| B. | Oxymercuration |
| C. | Hydroboration |
| D. | Halogenation |
| Answer» B. Oxymercuration | |
| 18. |
Select the incorrect statement regarding alkenes |
| A. | In alkenes, the carbons are connected by pi bonds |
| B. | Alkenes have almost same physical properties as that of the alkanes |
| C. | Alkenes are less reactive than alkanes |
| D. | Alkenes undergo polymerization reaction |
| Answer» D. Alkenes undergo polymerization reaction | |
| 19. |
Which among these is not a structural isomer of the compound C4H8 |
| A. | But-1-ene |
| B. | But-2-ene |
| C. | But-3-ene |
| D. | 2-methylpropene |
| Answer» D. 2-methylpropene | |
| 20. |
In Alkenes the Carbon atoms are connected to each other by a |
| A. | Single bond |
| B. | Double bond |
| C. | Triple bond |
| D. | Not connected |
| Answer» C. Triple bond | |