Chemistry Question Bank

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

(i)CH MgBr (i)Dil.NaOH (ii) (ii)H O P R -> -> 4-methylpent-3-en-2-one compound P is (KCET 2014)

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon is (NEET 2016)

The IUPAC name of the compound (NEET 2017) is

Conc.NaOH O|| H C H CH CH O -> Find out the products of reaction (AIIMS 2019)

Identify compound X in the following sequences of reactions : (NEET 2021) (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)

Benzaldehyde + NaOH→

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

shows Cannizzaro’s reaction due to

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

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

The reaction given is

Predict the product ‘B’ in the sequence of reaction

does not show aldol condensation because :

If pentan-2-one is reacted with NaBH4, followed by hydrolysis with D2O, the product will be :

The compound which is not reduced by 퐿푖퐴푙퐻4 is

In the above sequence X can be

퐶퐻3퐶퐻푂+ 퐿푖퐴푙퐻4 →퐶퐻3퐶퐻2푂퐻 Nucleophile added in this reaction is

The product predominates is (a) (b) (c) (d)

For C6H5CHO which of the following is incorrect?

Which one of the following pairs is not correctly matched