alleryStart learning →When a metal reacts with a dilute acid, the gas produced is
Ahydrogen
Boxygen
Ccarbon dioxide
Dnitrogen
Answer & Solution
Correct answer: A. hydrogen
1. Metal + dilute acid → salt + hydrogen gas.
2. The gas is **hydrogen**, which burns with a 'pop' sound when a lit splinter is brought near.
3. e.g. Zn + H₂SO₄ → ZnSO₄ + H₂.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch2 'Acids, Bases and Salts', §2.2_
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