MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
Diastereomers are _________ |
| A. | Geometrical isomers |
| B. | Mirror images |
| C. | Non-mirror images |
| D. | Unstable molecules |
| Answer» D. Unstable molecules | |
| 2. |
The plane which divides the molecule into two equal parts so that each half is the mirror image of other half is called _________ |
| A. | Centre of symmetry |
| B. | Plane of symmetry |
| C. | Axis of symmetry |
| D. | Angle of symmetry |
| Answer» C. Axis of symmetry | |
| 3. |
Optical activity can also result from the lack of molecular symmetry in molecules. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Enantiomerism is the phenomenon of existence of enantiomers in a single structural formula, in _________ configuration. |
| A. | Same |
| B. | Opposite |
| C. | Same as well as opposite |
| D. | Initially opposite and then same |
| Answer» C. Same as well as opposite | |
| 5. |
Chiral molecules which are non-super-imposable mirror images of each other are called _________ |
| A. | Diastereomers |
| B. | Meso compounds |
| C. | Racemic mixture |
| D. | Enantiomers |
| Answer» E. | |
| 6. |
To avoid excessive high value of molecular rotation, concentration is taken as _________ |
| A. | 1 centi-mole/mL |
| B. | 1 milli-mole/mL |
| C. | 1 mole/mL |
| D. | 1 kilo-mole/mL |
| Answer» B. 1 milli-mole/mL | |
| 7. |
The specific rotation is inversely proportional to _________ |
| A. | Observed rotation |
| B. | Temperature |
| C. | Concentration of solution |
| D. | D-line of sodium vapour light |
| Answer» D. D-line of sodium vapour light | |
| 8. |
For any given substance, the amount of rotation does not depends upon _________ |
| A. | Wavelength of light used |
| B. | Nature of the solvent |
| C. | Temperature |
| D. | Pressure |
| Answer» E. | |
| 9. |
Chiral molecules are those which are? |
| A. | Shows geometrical isomerism |
| B. | Superimposable on their mirror images |
| C. | Not superimposable on their mirror images |
| D. | Unstable molecules |
| Answer» D. Unstable molecules | |