MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Formaldehyde cannot undergo aldol condensation as well as Cannizzaro s reaction. |
| A. | Trues |
| B. | False |
| Answer» C. | |
| 2. |
How many products are formed from the aldol condensation reaction between ethanal and propanal? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 3. |
Which of the following compound does not undergo aldol condensation? |
| A. | Acetaldehyde |
| B. | Propanal |
| C. | Propanone |
| D. | Benzaldehyde |
| Answer» E. | |
| 4. |
Which of the following does not give yellow ppt on iodoform test? |
| A. | Propan-2-ol |
| B. | Butan-2-ol |
| C. | Pentan-2-one |
| D. | Pentan-3-one |
| Answer» E. | |
| 5. |
Which of the following compounds can be distinguished from iodoform test? |
| A. | Benzaldehyde and benzophenone |
| B. | Benzaldehyde and formaldehyde |
| C. | Acetophenone and acetaldehyde |
| D. | Acetophenone and benzophenone |
| Answer» E. | |
| 6. |
When an aldehyde is heated with Fehling s solution, a reddish-brown precipitate is formed due to which compound? |
| A. | CuS |
| B. | AgBr |
| C. | Cu<sub>2</sub>O |
| D. | CdS |
| Answer» D. CdS | |
| 7. |
What is the proportion of Fehling solution A to Fehling solution B in the solution of Fehling s reagent for conducting Fehling s test? |
| A. | 1:1 |
| B. | 1:2 |
| C. | 2:1 |
| D. | 1:3 |
| Answer» B. 1:2 | |
| 8. |
Which of the following is Tollen s reagent? |
| A. | Ammoniacal silver nitrate solution |
| B. | Aqueous copper sulphate |
| C. | Alkaline sodium potassium tartarate |
| D. | Mixture of sodium carbonate, sodium citrate and Cu<sup>2+</sup> complex |
| Answer» B. Aqueous copper sulphate | |
| 9. |
Four compounds A, B, C and D were heated individually with Tollen s reagent. It was found that all compounds other than D formed a silver mirror on the inside of their test tubes. Identify the compound D. |
| A. | Acetaldehyde |
| B. | Butyraldehyde |
| C. | Acetone |
| D. | Benzaldehyde |
| Answer» D. Benzaldehyde | |
| 10. |
What are the major products of the oxidation of pentan-2-one with concentrated HNO3 at very high temperatures? |
| A. | Butanoic acid and methanoic acid |
| B. | Propanoic acid and ethanoic acid |
| C. | Pentanoic acid |
| D. | Butanoic acid and ethanoic acid |
| Answer» C. Pentanoic acid | |
| 11. |
Acetaldehyde is oxidised to ______ in the presence of nitric acid. |
| A. | methanoic acid |
| B. | ethanoic acid |
| C. | acetone |
| D. | ethanol |
| Answer» C. acetone | |
| 12. |
A compound on treatment with hydrazine followed by heating up to 473K with KOH in ethylene glycol gives propane. Identify the compound. |
| A. | Methanal |
| B. | Ethanal |
| C. | Propanal |
| D. | Acetone |
| Answer» E. | |
| 13. |
What is the product of Clemmensen reduction on acetophenone? |
| A. | Benzaldehyde |
| B. | Methyl benzene |
| C. | Ethyl benzene |
| D. | Benzophenone |
| Answer» D. Benzophenone | |
| 14. |
Catalytic hydrogenation of _______ gives propan-2-ol. |
| A. | formaldehyde |
| B. | acetaldehyde |
| C. | propionaldehyde |
| D. | acetone |
| Answer» E. | |