English

When metals are dissolved in water the gas evolved is ______.

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Question

When metals are dissolved in water the gas evolved is ______.

Options

  • hydrogen

  • ammonia

  • carbon dioxide

  • nitrogen

MCQ
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Solution

When metals are dissolved in water the gas evolved is hydrogen.

Explanation:

Active metals (like Sodium, Potassium, or Calcium) react vigorously with water to form metal hydroxides and liberate hydrogen gas (H2).

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Chapter 3: Acids, Bases and Salts - EXERCISE [Page 74]

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Lakhmir Singh Chemistry [English] Class 10 ICSE
Chapter 3 Acids, Bases and Salts
EXERCISE | Q 7. | Page 74
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