🧪

Chemistry — Senior

Atomic structure, bonding, periodic table, reactions, and organic chemistry — Class IX–XI

Sample Practice Questions

  1. An endothermic reaction has ΔH:

    • Negative (energy released)
    • Positive (energy absorbed)
    • Zero
    • Equal to activation energy
    Show answer

    Answer: Positive (energy absorbed)

  2. Raoult's law applies to:

    • Rate of evaporation
    • Vapour pressure of ideal solutions
    • Boiling point only
    • Non-ideal mixtures
    Show answer

    Answer: Vapour pressure of ideal solutions

  3. Markovnikov's rule applies to:

    • Substitution reactions
    • Addition of HX to unsymmetrical alkenes
    • Elimination reactions
    • Nucleophilic substitution
    Show answer

    Answer: Addition of HX to unsymmetrical alkenes

  4. Ester formation (Fischer esterification) requires:

    • Acid + base
    • Acid + alcohol with H⁺ catalyst
    • Aldehyde + alcohol
    • Two alcohols
    Show answer

    Answer: Acid + alcohol with H⁺ catalyst

Practise more questions →
Practice Questions

Practise VVM questions on Chemistry — Senior. Answers are revealed after each question.

Start Practice →
All Topics