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Topic

Biochemistry

Asked 2 times in CDS over 9 years (2016–2025), peaking in 2025.
2
PYQs
1
Exams
2
Years active
2016–2025
Span
2025
Peak
1/2
Answers
📅 Full chronological timeline →

Key insights

  • Most tested in CDS — 2 of 2 PYQs
  • Most asked in 2025
  • Recurs across 2 years (2016–2025)

Across exams

CDS · 2

How the concept evolved

116
125
Rising — more than half its appearances (2 of 2) are since 2016.

Sample questions

You've seen the pattern — here are a few of the actual PYQs.
CDS2025
Which of the following represent disaccharides ?
  1. A Starch and glycogen
  2. B Glucose and galactose
  3. C Maltose and lactose
  4. D Ribose and xylose
Answer key not yet available (pending official release)
Science & Technology › Biology & Health
CDS2016
The elemental composition of an adult human body by mass is
  1. A C > O > H > N
  2. B O > C > H > N ✓
  3. C N > C > H > O
  4. D N > C > O > H
✓ Correct answer: (B)
Science & Technology › Biology & Health

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