CBSE 12 Chemistry Question Paper-2023 Set-3

Which of the following is not true about enantiomers?

Aspirin is obtained by the acetylation of which of the following compounds?

The reactivities of the carbonyl compounds HCHO (I), CH3CHO (II) and CH3COCH3 (III) towards nucleophilic addition reaction decreases in the order:

Among the following, which is the strongest base?

Which of the following carbohydrates gives only glucose on hydrolysis?

Which of the following vitamins is water-soluble?

Which of the following has the same unit of reaction rate as the rate constant?

Kohlrausch gave the following relation for strong electrolyte: Λ = Λ° - A√C Which of the following equality holds true?

Which of the following has the highest melting point?

Sodium phenoxide when heated with CO2 under pressure, followed by acidification, yields:

A compound (A) with molecular formula C5H10O, forms a phenyl hydrazone and gives negative Tollens' and iodoform tests. The compound on reduction gives n-pentane. The compound (A) is:

Benzene diazonium chloride on hydrolysis gives:

Helical structure of proteins is stabilized by:

A vitamin which plays a vital role in the clotting of blood is:

The rate of reaction A + B → Products, is given by the equation r = k[A][B]. If B is taken in excess, the order of the reaction will be:

An azeotropic mixture of two liquids has a boiling point higher than either of the two liquids when it:

To convert propene to 1-propanol, which of the following reagents and conditions should be used?

Which of the following reagents would you choose to convert CH3COCl to acetone?

Reaction of methyl chloride with an excess of ammonia will mainly give: