Chemistry Question Bank

When ethanal is treated with Fehling’s solution, it gives a precipitate of (AFMC 2010)

Name the reagent used to bring about the following transformation : But-2-ene to ethanal (AMU 2010)

Which of the following reaction will not result in the formation of carbon-carbon bonds? (CBSE AIPMT 2010)

Identify the reaction which is used to obtain -hydroxy ketone? (Guj CET 2010)

Ethyl methyl ketone is obtained by heating calcium salts of (MHT CET 2010)

In the following reaction sequence, C H NH Cl Ca(OH) Alc.KOH CH CHO X Y -> -> Y is (MHT CET 2010)

Aldehydes and ketones are differentiated by using (UP CPMT 2010)

If heavy water is taken as solvent instead of normal water while performing Cannizzaro reaction, the products of the reaction are (AIIMS 2009)

The most reactive of the following is (J&K CET)

The compound, with which ethanal does not react, is. (AFMC 2009)

Assertion(A) 2-butenal lacks enolisable H-atom, α to carbonyl group, still it has sufficient acidic character. Reason(R) The conjugate base of 2-butenal is stabilized by resonance. (AIIMS 2009)

The compound 푥is

The reaction given is

Undergo Cannizaro reaction give product as (a) (b) (c) (d)

(a) (b) (c) (d)

shows Cannizzaro’s reaction due to

Benzaldehyde + NaOH→

In the scheme given below, the total number of intramolecular aldol condensation products formed from ′′푌′′ is (a)1 (b)2 (c)3 (d)4

(a) (b) (c) (d)

Which of the following compound will undergo self aldol condensation in the presence of cold dilute alkali

3-hydroxy butanal is formed when X reacts with Y in dilute Z solution. What are X, Y and Z? X Y Z (a) CH3CHO, (CH3)2CO, NaOH (b) CH3CHO, CH3CHO, NaCl (c) (CH3)2CO, (CH3)2CO, HCl (d) CH3CHO, CH3CHO, NaOH

Which of the products is formed when acetone is reacted with barium hydroxide solution? (a) (b) (c) (d)

Acetophenone when reacted with a base, C2H5ONa, yields a stable compound which has the structure (a) (b) (c)

Aldol condensation will not take place in

Predict the product ‘B’ in the sequence of reaction