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Class 12 Chemistry Practice Test: Aldehydes and Ketones - Chemical Reactions
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Class 12 Chemistry Practice Test: Aldehydes and Ketones - Chemical Reactions
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25 Questions

1. What are the major products of the oxidation of pentan-2-one with concentrated HNO3 at very high temperatures?
2. Which of the following compounds can be distinguished from iodoform test?
3. Which of the following does not give yellow ppt on iodoform test?
4. When an aldehyde is heated with Fehling’s solution, a reddish-brown precipitate is formed due to which compound?
5. What is the product of Clemmensen reduction on acetophenone?
6. What is the proportion of Fehling solution A to Fehling solution B in the solution of Fehling’s reagent for conducting Fehling’s test?
7. Which of the following is the most reactive towards hydrogen cyanide?
8. The following is an addition product of the reaction between _______ and sodium bisulphite.
The addition product of reaction between acetaldehyde & sodium bisulphite
9. A compound on treatment with hydrazine followed by heating up to 473K with KOH in ethylene glycol gives propane. Identify the compound.
10. Identify the catalyst in the nucleophilic addition of HCN to acetone.
11. Formaldehyde cannot undergo aldol condensation as well as Cannizzaro’s reaction.
12. Semicarbazones undergo acidic nucleophilic addition followed by dehydration to give N-substituted carbonyl derivatives.
13. 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.
14. The following acetal shown is formed by the reaction between ______ and ______ in the presence of dry HCl.
The acetal formed by reaction between ethanal & ethanol in presence of dry HCl
15. The nucleophilic addition reactions of aldehydes are carried out in ________ medium.
16. Identify the N-substituted derivative of carbonyl compounds that are coloured compounds and are useful in the identification of aldehydes and ketones.
17. Which of the following is least reactive towards a nucleophilic attack?
18. Aldehydes and ketones undergo __________ reactions.
19. What is the correct order of reactivity towards nucleophilic addition?
20. Which of the following is Tollen’s reagent?
21. How many products are formed from the aldol condensation reaction between ethanal and propanal?
22. Catalytic hydrogenation of _______ gives propan-2-ol.
23. Which of the following compound does not undergo aldol condensation?
24. What is the correct order of reactivity of the following towards nucleophilic addition?
25. Acetone reacts with ethylene glycol in dry HCl gas to form _________

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