✓ Board-verified
Chemistry · 2024 · 3 marks
CBSE 2024 · Region 1 · Set 1 · Q27
Answer the following: (any three) (a) What is peptide linkage? (b) What type of bonds hold a DNA double helix together? (c) Which one of the…
Answer the following : (any three)
(a)
What is peptide linkage ?
(b)
What type of bonds hold a DNA double helix together ?
(c)
Which one of the following is a polysaccharide ? Sucrose, Glucose, Starch, Fructose
(d)
Give one example each for water-soluble vitamins and fat-soluble vitamins.
Marking-scheme solution
a) A linkage which joins two amino acids through -CONH-bond.
b) Hydrogen bonding
c) Starch
d) Water soluble - Vitamin B / C
Fat soluble - A, D, E, KMore from Biomolecules
- Assertion: Vitamin C cannot be stored in our body. Reason (R): Vitamin C is water soluble and readily excreted in urine.2024 · asked 2×
- Write two differences between DNA and RNA. 1 × 22023 · asked 2×
- Differentiate between the following: 2 × 1 (i) Acidic amino acids and basic amino acids (ii) Nucleotide and Nucleoside2026
- Assertion: Glucose gets oxidized to six carbon gluconic acid on reaction with bromine water. Reason (R): The carbonyl group is absent in the open…2026
- Living systems are made up of various complex biomolecules like carbohydrates, proteins, nucleic acids, lipids, etc. Carbohydrates are optically…2023
- Helical structure of proteins is stabilized by:2023
- Assertion: The pentaacetate of glucose does not react with H_2 N-OH. Reason (R): It indicates the presence of free - CHO group in glucose.2026
- Write the reactions of glucose with: H_2 N-OH Br_2 water2024
CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.