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Periodic Table, Periodic Properties and Variations of Properties — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryPeriodic Table, Periodic Properties and Variations of Properties1 Mark
MCQ
Why group IA elements are called alkali metals?
  • A
    When combined with water, their oxides produce acidic solutions.
  • ✓
    When their oxides and hydroxides are treated with water, they produce alkaline solutions.
  • C
    When their peroxides are treated with water, they produce alkaline solutions.
  • D
    When treated with water, their hydroxides produce acidic solutions.
✓

Answer

Correct option: B.
When their oxides and hydroxides are treated with water, they produce alkaline solutions.
(b) When their oxides and hydroxides are treated with water, they produce alkaline solutions.
Explanation : Group IA elements are called alkali metals because their oxides and hydroxides are soluble in water and form strong bases

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