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Chemistry — Tier 3

Physical, organic, and inorganic chemistry for Classes XI–XII

Sample Practice Questions

  1. IUPAC name of (CH₃)₃C−OH is:

    • Propan-2-ol
    • 2-methylpropan-1-ol
    • 2-methylpropan-2-ol
    • Butanol
    Show answer

    Answer: 2-methylpropan-2-ol

  2. Entropy increases in:

    • Freezing of water
    • Condensation of gas
    • Dissolving a solid in a liquid
    • Rusting in a closed system
    Show answer

    Answer: Dissolving a solid in a liquid

  3. Hybridisation of carbon in CO₂ is:

    • sp
    • sp²
    • sp³
    • sp³d
    Show answer

    Answer: sp

  4. Aldol condensation requires:

    • Only ketones
    • An aldehyde or ketone with α-hydrogen in base
    • Anhydrous conditions
    • Acid catalyst always
    Show answer

    Answer: An aldehyde or ketone with α-hydrogen in base

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Practice Questions

Practise NGSE questions on Chemistry — Tier 3. Answers are revealed after each question.

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Frequently Asked Questions

What does Chemistry — Tier 3 cover in the NGSE exam?

Physical, organic, and inorganic chemistry for Classes XI–XII.

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