Punjab 12th Class Chemistry Chapter 12 Aldehydes and Ketones Mcqs Test Online Punjab 12th Class Chemistry Chapter 12 Aldehydes and Ketones Mcqs Test Online 1234567891011121314151617181920Show paginator Hide paginator Question 1 of 20Chemistry 1. The colour of Iodoform is: 1.Yellow 2.Black 3.Blue 4.White Question 1 of 20Question 2 of 20 2. Cannizaro’s reaction is not given by: 1.Formaldehyde 2.Benzaldehyde 3.Trimethylacetaldehyde 4.Acetaldehyde Question 2 of 20Question 3 of 20 3. Aldehydes are the oxidation product of: 1.ter – alcohols 2.p – alcohols 3.carboxylic acids4.s – alcohols Question 3 of 20Question 4 of 20 4. Formaldehyde react with NH3 to give? 1.Tetra ethylene tetramine 2.Tetra ethylene hexamine 3.Cyclonite 4.Hexa methlene tetra amine Question 4 of 20Question 5 of 20 5. General formula of aldehyde and ketone is: 1.CnH2n+IO 2.CnH2n+2O3.CnH2nO 4.CnHnO Question 5 of 20Question 6 of 20 6. The colour of lodoform is: 1.Yellow 2.White 3.Blue 4.Black Question 6 of 20Question 7 of 20 7. Phenylhydrazone on treatment with carbohyl compounds produce: 1.None of these 2.Phenlhydrazone 3.Hydroxyl amines 4.Oximes Question 7 of 20Question 8 of 20 8. Which of the following compounds will not given iodoform test on treatment with I₂/NaOH. 1.Acetone 2.Butanone 3.3 – pentahone 4.Acetaldehyde Question 8 of 20Question 9 of 20 9. Which one of the following can undergo aldol condensation reaction? 1.Trimethylacetaldehyde 2.Benz aldehyde 3.Formaldehyde 4.Acetaldehyde Question 9 of 20Question 10 of 20 10. Which of the following reagents will react with both aldehydes and ketones? 1.Grignard reagent 2.Fehling’s reagent 3.Tollen’s reagent 4.Benedict’s reagent Question 10 of 20Question 11 of 20 11. Which of the following carbe prepared in the laboratory by dry distillation of (HCOO)₂ Ca? 1.H₂C = CH₂ 2.CH₂OH 3.HCHO 4.None of these Question 11 of 20Question 12 of 20 12. Aldehydes and ketones are carbonyl compounds. Which of them react both with NaBH4 and with Tollen’s reagent: 1.Neither aldehydes nor ketones 2.Both addehydes and ketones 3.Aldehydes only 4.Ketones only Question 12 of 20Question 13 of 20 13. Formaldehyde react with NH₃ to give? 1.Cyalonite 2.Tetra ethylene nexamine 3.Hexa methlene tetramine 4.Tetra ethylene tetramine Question 13 of 20Question 14 of 20 14. Acetone reacts with HCN to form a Cyanohydrin. It is an example of: 1.Nuelesphilic substitution2.Electrophilic substitution 3.Electro philic addition 4.Nucleophilic addition Question 14 of 20Question 15 of 20 15. The carbon atom of carbon atom of a carbonyl group is: 1.None of these 2.sp³ hybridized 3.sp hybridized 4.sp² hybridized Question 15 of 20Question 16 of 20 16. Aldol condensation is not successful with compounds: 1.Having no α –hydrogen 2.None 3.Having α –hydrogen 4.Having α –methyl group Question 16 of 20Question 17 of 20 17. Ketones are prepared by the oxidation of: 1.Primary alcohol 2.None of these 3.Secondary alcohol 4.Tertiary alcohol Question 17 of 20Question 18 of 20 18. Which of the following can be prepared in the laboratory by dry distillation of (HCOO)2 ca? 1.HCHO 2.CH3CHO3.H2C = CH2 4.CH3OH Question 18 of 20Question 19 of 20 19. General formula of aldehydes and ketone is? 1.CnH₂nO₂2.CnH₂nO 3.Cn₂H₂nO 4.CnH₂n₂O Question 19 of 20Question 20 of 20 20. Aldol condensation is not successful with compounds: 1.None2.Hydroxyl amines 3.Oximes 4.Phenylhydrazone Question 20 of 20 Loading... Test By Subject Punjab Test By Topics 12th Class Chemistry You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.