MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
In glyceraldehydes, the complete sequence of priority is _________ |
| A. | –OH > -CH2OH > -CHO > -H |
| B. | –H > -CH2OH > -CHO > -OH |
| C. | –H > –OH > -CH2OH > -CHO |
| D. | –OH > CHO > -CH2OH > -H |
| Answer» E. | |
| 2. |
The cis-trans nomenclature is not applicable when _________ |
| A. | The different groups attached to the carbon atom of double bond are same |
| B. | Atleast one of the group attached to each carbon atom is same |
| C. | The different groups attached to the carbon atom of double bond are not same |
| D. | The cis-trans nomenclature is applicable for all compounds |
| Answer» D. The cis-trans nomenclature is applicable for all compounds | |
| 3. |
Select the incorrect option from the following. |
| A. | Fischer projections are two dimensional representations of three dimensional molecules |
| B. | A molecule is achiral if it cannot be superimposed on its mirror reflection |
| C. | E and Z notations are based on Cahn, Ingold and Prelog priority system |
| D. | Chiral molecules which are non-superimposable mirror images of each other are enantiomers |
| Answer» C. E and Z notations are based on Cahn, Ingold and Prelog priority system | |
| 4. |
Assign E or Z configuration to the given compound. |
| A. | E-configuration |
| B. | Z-configuration |
| C. | S-configuration |
| D. | R-configuration |
| Answer» B. Z-configuration | |
| 5. |
What are Stereoisomers? |
| A. | Isomers having a same molecular formula and same configuration |
| B. | Isomers having a same molecular formula but different configuration |
| C. | Isomers having a different molecular formula but the same configuration |
| D. | Isomers having a different molecular formula and different configuration |
| Answer» C. Isomers having a different molecular formula but the same configuration | |
| 6. |
THE_CIS-TRANS_NOMENCLATURE_IS_NOT_APPLICABLE_WHEN?$ |
| A. | The different groups attached to the carbon atom of double bond are same |
| B. | Atleast one of the group attached to each carbon atom is same |
| C. | The different groups attached to the carbon atom of double bond are not same |
| D. | The cis-trans nomenclature is applicable for all compounds |
| Answer» D. The cis-trans nomenclature is applicable for all compounds | |
| 7. |
In_glyceraldehydes,_the_complete_sequence_of_priority_is$ |
| A. | –OH > -CH<sub>2</sub>OH > -CHO > -H |
| B. | –H > -CH<sub>2</sub>OH > -CHO > -OH |
| C. | –H > –OH > -CH<sub>2</sub>OH > -CHO |
| D. | –OH > CHO > -CH<sub>2</sub>OH > -H |
| Answer» E. | |
| 8. |
Select the incorrect option from the following? |
| A. | Fischer projections are two dimensional representations of three dimensional molecules |
| B. | A molecule is achiral if it cannot be superimposed on its mirror reflection |
| C. | E and Z notations are based on Cahn, Ingold and Prelog priority system |
| D. | Chiral molecules which are non-superimposable mirror images of each other are enantiomers |
| Answer» C. E and Z notations are based on Cahn, Ingold and Prelog priority system | |
| 9. |
Which of the following compounds have Z-configuration? |
| A. | <sub>CH<sub>3</sub></sub><sup>CH<sub>3</sub>CH<sub>2</sub></sup>>C=C<<sup>H</sup><sub>CH<sub>3</sub></sub> |
| B. | <sub>H</sub><sup>Ph</sup>>C=C<<sup>COOH</sup><sub>Ph</sub> |
| C. | <sub>H<sub>2</sub>N</sub><sup>Cl</sup>>C=C<<sup>COOH</sup><sub>Br</sub> |
| D. | <sub>CH<sub>3</sub></sub><sup>Ph</sup>>C=C<<sup>CH<sub>2</sub>CH<sub>3</sub></sup><sub>Br</sub> |
| Answer» C. <sub>H<sub>2</sub>N</sub><sup>Cl</sup>>C=C<<sup>COOH</sup><sub>Br</sub> | |
| 10. |
In which type of projection we can get staggered and eclipsed conformations? |
| A. | Newman Projection |
| B. | Sawhorse Projection |
| C. | Fischer Projection |
| D. | Wedge Projection |
| Answer» C. Fischer Projection | |
| 11. |
Choose the correct option from the following. |
| A. | A group gets priority if its atomic number is high |
| B. | When atoms attached to a double bond have same atomic number, the first atoms are considered |
| C. | A group gets priority if its atomic number is low |
| D. | Lone pair gets more priority and is ranked above hydrogen |
| Answer» B. When atoms attached to a double bond have same atomic number, the first atoms are considered | |
| 12. |
Which type of compounds cannot exhibit geometrical isomerism? |
| A. | Singly Bonded |
| B. | Doubly Bonded |
| C. | Triply Bonded |
| D. | Cyclic Compounds |
| Answer» D. Cyclic Compounds | |
| 13. |
What are diastereomers? |
| A. | Molecules with non-superimposable mirror images |
| B. | Molecules with superimposable mirror images |
| C. | Molecules which do not have non-superimposable mirror images |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 14. |
What are Stereoisomers? |
| A. | Isomers having a same molecular formula and same configuration |
| B. | Isomers having a same molecular formula but different configuration |
| C. | Isomers having a different molecular formula but the same configuration |
| D. | Isomers having a different molecular formula and different configuration |
| Answer» C. Isomers having a different molecular formula but the same configuration | |