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.

Question : Which of the following statements is incorrect?

Option 1: Metals react with oxygen to form basic oxides

Option 2: Non-metals are malleable

Option 3: Non-metals do not produce any sound

Option 4: Metals have low ionisation enthalpy

Question : Which of the following metals reacts violently with cold water?

Option 1: Magnesium

Option 2: Aluminium

Option 3: Zinc

Option 4: Potassium