Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Aldehydes, Ketones and Carboxylic Acids

Short Answer Type

221. How will you convert ethanal into the following compounds?
But-2-enoic acid.

496 Views

Long Answer Type

222.
Write structural formulae and names of the four possible aldol condensation products from propanal and butanal. In each case, indicate which aldehyde served as nucleophile and which as electrophile.

Case i) Aldol condensation in two molecules of butanal, in which one acts as a nucleophile and the other as an electrophile.

Case ii) Aldol condensation in two molecules of propanal, in which one acts as nucleophile and other as an electrophile.

Case iii) Aldol condensation in between of one molecule of propanal and butanal in which propanal acts as a nucleophile and butanal acts as an electrophile.

Case iv) Aldol condensation in between of one molecule of butanal and propanal in which propanal acts as electrophile and butanal acts as a nucleophile.

255 Views

Short Answer Type

223. An organic compound with the molecular formula C₉H₁₀O forms 2, 4-DNP derivative, reduces Tollen’s reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2-benzenedicarboxylic acid. Identify the compound.

707 Views

224.

An organic compound (A) (Mol. formula C₈H₁₆O₂) was hydrolysed with dilute sulphuric acid to give a carboxylic acid (B) and an alcohol (C). Oxidation of (C) with chromic acid produced (B). Write equations for the reactions involved.

509 Views

225. Arrange the following compounds in increasing order of their property as indicated:

Acetaldehyde, Acetone, Di-tert-butyl ketone, Methyl tert-hutyl ketone (reactivity towards HCN).

276 Views

226. Arrange the following compounds in increasing order of their property as indicated:

CH₃CH₂CH(Br)COOH, CH₃CH(Br)CH₂COOH, (CH₃)₂CHCOOH, CH₃CH₂CH₂COOH (acid strength).

291 Views

227. Arrange the following compounds in increasing order of their property as indicated:
Benzoic acid, 4-Nitrohenzoic acid, 3, 4-Dinitrobenzoic acid, 4-Methoxy benzoic acid (acidstrength).

163 Views

228. Give simple tests to distinguish between the following pairs of compounds:
Propanal and Propanone

186 Views

229. Give simple tests to distinguish between the following pairs of compounds:
Phenol and Benzoic acid

189 Views

230. Give simple tests to distinguish between the following pairs of compounds:
Pentan-2-one and Pentan-3-one

229 Views

Previous Year Papers

Test Series

Test Yourself

Short Answer Type

Long Answer Type

222. Write structural formulae and names of the four possible aldol condensation products from propanal and butanal. In each case, indicate which aldehyde served as nucleophile and which as electrophile.

Short Answer Type

222.
Write structural formulae and names of the four possible aldol condensation products from propanal and butanal. In each case, indicate which aldehyde served as nucleophile and which as electrophile.