Question : Which of the following statements is correct?
Option 1: Metals react with acids and produce metal salts and hydrogen gas.
Option 2: Non-metals react with oxygen to produce non-metallic oxides which are basic.
Option 3: On burning, metals react with oxygen to produce acidic metal oxides.
Option 4: Less reactive metals displace more reactive metals from their compounds in aqueous solutions.
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Correct Answer: Metals react with acids and produce metal salts and hydrogen gas.
Solution : The correct answer is Metals react with acids and produce metal salts and hydrogen gas.
It is an example of a displacement reaction. Metals are placed above hydrogen in the reactivity series, and form metal salts along with hydrogen gas. As acids have the property of giving Hydrogen (H+) ions, the resultant hydrogen gas is produced along with a pop sound.
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