Kerala PSC Junior Chemist Question Paper — PYQ Practice
Junior Chemist notification 186/2025 — Mining and Geology department chemistry paper. PSC PYQ includes questions from this 2026 paper with subject-specific and general science coverage.
Paper details
- Paper code: junior-chemist-mining-geology-2026
- Format: Full previous year paper — PYQ practice with answers
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Open the app and navigate: Exam Browse → Kerala PSC → Engineering & Technical → Mining and Geology.
Focus on chemistry fundamentals plus General Science PYQs from past Kerala PSC technical papers.
Preview questions (5)
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Question 1 Junior Chemist 2026
A cation X3+ has [Kr]4d10 configuration. The element X belongs to?
Correct answer: B. p-block
Filled d10 with outer p-block character. Such ions are typical of post-transition p-block elements.
Question 2 Junior Chemist 2026
Ion-exchange separation of rare earths — which is true?
Correct answer: C. Lu3+ has minimum firmness vs La3+
Separation depends on ionic size; Lu3+ binds least firmly compared to La3+, aiding separation.
Question 3 Junior Chemist 2026
Synthetic zeolite HZSM-5 is obtained by?
Correct answer: D. Replacing H+ with Na+
Zeolite HZSM-5 is formed by ion exchange, replacing Na+ with H+ to create acidic sites.
Question 4 Junior Chemist 2026
Borane structure edge-contracted icosahedron with two missing vertices?
Correct answer: A. C2B7H13
C2B7H13 fits the described geometry, a carborane cluster with contracted icosahedral form.
Question 5 Junior Chemist 2026
Configuration showing z-in Jahn Teller distortion?
Correct answer: B. Octahedral d1
Octahedral d1 ions undergo Jahn-Teller distortion due to uneven occupancy of eg orbitals.
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Open this paper in PSC PYQ Exam Browse under Mining and Geology department.