📚NCERT Questions — CBSE12

Which of the following is the general formula for most carbohydrates?

The formation of n-hexane when glucose is heated with HI suggests which structural feature of glucose?

Which type of protein structure involves the regular folding of the polypeptide backbone due to hydrogen bonding, forming structures like α-helix and β-pleated sheet?

Acetylation of glucose with acetic anhydride gives glucose pentaacetate. This reaction confirms the presence of:

Which of the following is the main storage polysaccharide of plants?

What is the product formed when glucose is oxidized with a mild oxidizing agent like bromine water?

Arrange the following acids in increasing order of their acidity: Benzoic acid, 4-Nitrobenzoic acid, 4-Methoxybenzoic acid.

In the gaseous phase, what is the correct order of basicity for primary, secondary, and tertiary amines, and ammonia?

Which of the following reagents can distinguish between propanal and propanone?

Which hormone is primarily responsible for regulating blood glucose levels within a narrow limit?

Why are lower aliphatic amines soluble in water?

What is the hybridization of the carbonyl carbon atom in aldehydes and ketones?

What is the role of chromosomes in heredity?

Why does direct nitration of aniline yield a significant amount of m-nitroaniline, despite the -NH2 group being ortho and para directing?

Which of the following reactions is used to introduce Cl- or Br- into the benzene ring by treating a diazonium salt solution with corresponding halogen acid in the presence of copper powder?

In the D-configuration of glyceraldehyde, where does the -OH group on the lowest asymmetric carbon atom lie when its structural formula is written following specific conventions?

Which of the following carboxylic acids is the strongest acid?

What are the two main types of nucleic acids?

What is the common name for C6H5NH2?

The enzyme that catalyzes the hydrolysis of maltose into glucose is named: