Aldehydes, Ketones and Carboxylic Acids · Question 7

An organic compound “x” where molar ratio of C, O and H are equal, on treatment with 50% KOH under reflux followed by acidification produced “y”. The most likely structure of “y” is: [Molar mass of ‘x’ is 58 g mol-1]

1. [figure]
2. CH3-CH=CH-CH=O
3. [figure]
4. [figure]

A molecule (X) with following structure under mild acidic condition is hydrolysed to produce (Y) and (Z). Identify the correct statements about (Y) and (Z). [figure] Choose the correct answer from the options given below :

1. A, B and C Only
2. B and C Only
3. C and D Only
4. A and D Only

Given below are the four isomeric compounds (P, Q, R, S) [figure] Identify correct statements from below. Choose the correct option.

1. C and E only
2. A and E only
3. A, B, D and E only
4. A, C and E only

The correct order of acidic strength of the major products formed in the given reactions, is : Choose the correct answer from the options given below :

1. C > A > D > B
2. A > D > C > B
3. A > D > B > C
4. C > B > A > D

A student is given one compound among the following compounds that gives positive test with Tollens' reagent. [figure] The compound is :

1. B
2. D
3. A
4. C

The unsaturated ether on acidic hydrolysis produces carbonyl compounds as shown below :- [figure] Based on this, predict the solution/reagent that will help to distinguish "P" and "Q" obtained in the following reaction :- CH3-CH=CH-O- CH3 |C=CH2 [ ]H3O P + Q

1. Saturated NaHSO3 solution
2. Fehling solution
3. Lucas reagent
4. 2,4-DNP reagent

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

1. Statement I is true but Statement II is false
2. Both Statement I and Statement II are false
3. Both Statement I and Statement II are true
4. Statement I is false but Statement II is true

Grignard reagent RMgBr (P) reacts with water and forms a gas (Q). One gram of Q occupies 1.4 dm3 at STP. (P) on reaction with dry ice in dry ether followed by H3O+ forms a compound (Z). 0.1 mole of (Z) will weigh g. (Nearest integer)

'x' is the product which is obtained from propanenitrile and stannous chloride in the presence of hydrochloric acid followed by hydrolysis. 'y' is the product which is obtained from the but-2-ene by the ozonolysis followed by hydrolysis. From the following, which product is not obtained when one mole of 'x' and one mole of 'y' react with each other in the presence of alkali followed by heating?

1. 2-Methylpent-2-enal
2. 2-Methylbut-2-enal
3. 3-Methylbut-2-enal
4. Pent-2-enal

[figure] The correct sequence of reagents for the above conversion of X to Y is :

1. (i) NaOH(aq), (ii) Jones reagent, (iii) H3O+
2. (i) NaOEt, (ii) B2H6/H2O2, (iii) Jones reagent
3. (i) Jones reagent, (ii) NaOEt, (iii) Hot KMnO4/KOH
4. (i) B2H6/H2O2, (ii) NaOEt, (iii) Jones reagent