MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Unit Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What all factors affects the Amination by reduction process? |
| A. | Amount of iron and water used |
| B. | Effect of agitation |
| C. | Reaction temperature |
| D. | All of the mentioned |
| Answer» E. | |
| 2. |
Why do we use Iron (Fe) as catalysis in Amination by reduction processes? |
| A. | It’s great fineness |
| B. | High porosity |
| C. | High oxidation power |
| D. | All of the mentioned |
| E. | as catalysis in Amination by reduction processes?a) It’s great finenessb) High porosityc) High oxidation powerd) All of the mentioned |
| Answer» E. as catalysis in Amination by reduction processes?a) It’s great finenessb) High porosityc) High oxidation powerd) All of the mentioned | |
| 3. |
C6H5NO2 + 2Fe + 6HCl ——–> ______ + 2H2O + 2FeCl3 complete the reduction reaction? |
| A. | C6H5NH4 |
| B. | C6H5NO2 |
| C. | C6H5NH-C6H5 |
| D. | C6H5NH4 |
| Answer» B. C6H5NO2 | |
| 4. |
C6H5-NO2 gives C6H5-NH2 under which catalyst? |
| A. | Zn-acid |
| B. | Zn-water |
| C. | Zn-alkali |
| D. | All of the mentioned |
| Answer» B. Zn-water | |
| 5. |
What product do we get if C6H5-NO2 is catalysed by ‘Zn + water’? |
| A. | C6H5-NH2 |
| B. | C6H5-NHOH |
| C. | C6H6-NH-NH-C6H5 |
| D. | None of the mentioned |
| Answer» C. C6H6-NH-NH-C6H5 | |
| 6. |
WHY_DO_WE_USE_IRON_(FE)_AS_CATALYSIS_IN_AMINATION_BY_REDUCTION_PROCESSES??$ |
| A. | It’s great fineness |
| B. | High porosity |
| C. | High oxidation power |
| D. | All of the mentioned |
| Answer» E. | |
| 7. |
What all factors affects the Amination by reduction process?$ |
| A. | Amount of iron and water used |
| B. | Effect of agitation |
| C. | Reaction temperature |
| D. | All of the mentioned |
| Answer» E. | |
| 8. |
What is meant by an Electrophilic nitro group? |
| A. | Repels electron |
| B. | Attracts electron |
| C. | Free radical atoms |
| D. | Attract protons |
| Answer» C. Free radical atoms | |
| 9. |
What is the formula of Aryl amines? |
| A. | C<sub>6</sub>H<sub>5</sub>-NO<sub>2</sub> |
| B. | C<sub>6</sub>H<sub>5</sub>-NH-C<sub>6</sub>H<sub>5</sub> |
| C. | CH<sub>3</sub>-NH<sub>2</sub> |
| D. | C<sub>6</sub>H<sub>5</sub>-NH<sub>2</sub> |
| Answer» E. | |
| 10. |
C6H5NO2 + 2Fe + 6HCl ——–> ______ + 2H2O + 2FeCl3 complete the reduction reaction?$ |
| A. | C<sub>6</sub>H<sub>5</sub>NH<sub>4</sub> |
| B. | C<sub>6</sub>H<sub>5</sub>NO<sub>2</sub> |
| C. | C<sub>6</sub>H<sub>5</sub>NH-C<sub>6</sub>H<sub>5</sub> |
| D. | C<sub>6</sub>H<sub>5</sub>NH<sub>4</sub> |
| Answer» B. C<sub>6</sub>H<sub>5</sub>NO<sub>2</sub> | |
| 11. |
Who discovered in 1854 that nitro compounds could be reduced in the presence of iron and acetic acid? |
| A. | Perkin’s |
| B. | Bechamp’s |
| C. | Cara’s acid |
| D. | None of the mentioned |
| Answer» C. Cara‚Äö√Ñ√∂‚àö√ë‚àö¬•s acid | |
| 12. |
In the presence of what do we hydrolyse Anilide to an Amine? |
| A. | Alkali |
| B. | Zinc |
| C. | Mineral acids |
| D. | Sulphite |
| Answer» D. Sulphite | |
| 13. |
C6H5-NO2 gives C6H5-NH2 under which catalyst? |
| A. | Zn-acid |
| B. | Zn-water |
| C. | Zn-alkali |
| D. | All of the mentioned |
| Answer» B. Zn-water | |
| 14. |
What product do we get if C6H5-NO2 is catalysed by ‘Zn + water’?$ |
| A. | C<sub>6</sub>H<sub>5</sub>-NH<sub>2</sub> |
| B. | C<sub>6</sub>H<sub>5</sub>-NHOH |
| C. | C<sub>6</sub>H<sub>6</sub>-NH-NH-C<sub>6</sub>H<sub>5</sub> |
| D. | None of the mentioned |
| Answer» C. C<sub>6</sub>H<sub>6</sub>-NH-NH-C<sub>6</sub>H<sub>5</sub> | |
| 15. |
What is a Piria method? |
| A. | Electrolytic method |
| B. | Sulphite method |
| C. | Sulphide method |
| D. | Catalytic method |
| Answer» C. Sulphide method | |
| 16. |
Which of the following is a reduction method for the preparation of Amines? |
| A. | Metal and acids |
| B. | Sulphide |
| C. | Metal and alkali |
| D. | All of the mentioned |
| Answer» E. | |