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Topic Hybridization
Asked 3 times across 3 UPSC exams over 35 years (1987–2022), peaking in 1987.
Key insights
- Most tested in CSE — 1 of 3 PYQs
- Most asked in 1987
- Recurs across 3 years (1987–2022)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 1987 → CDS 2019 → CAPF 2022
How the concept evolved
Rising — more than half its appearances (2 of 3) are since 2016.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CAPF2022
One way of incorporating desired characters into crop varieties is hybridization. In this process, there is crossing between genetically dissimilar plants. Which one of the following crossings will not refer to hybridization?
- A Intervarietal
- B Interspecific
- C Intergenic
- D Intragenic ✓
✓ Correct answer: (D)
Science & Technology › Biotech & Genetics
CDS2019
The PCl5 molecule has trigonal bipyramidal structure. Therefore, the hybridization of p orbitals should be
- A sp3
- B sp3
- C dsp2
- D dsp3 ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
CSE1987
The hybrids of which of the following plants are available for commercial production? (
- Rice (
- Wheat Jute (4) Pulses (3)
- A 1, 2 and 4 ✓
- B 2 and 3
- C 3 and 4
- D 2, 3 and 4
✓ Correct answer: (A)
Agriculture › Crops & Cropping Systems
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