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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Question : Which of the following statement(s) is/are correct?
Option 1: Oxides of non-metals are basic
Option 2: Oxides of non-metals are acidic
Option 3: Oxides of metals are acidic
Option 4: All options are correct
Question : Which one of the following metals does not react with water to produce Hydrogen?
Option 1: Potassium
Option 2: Cadmium
Option 3: Sodium
Option 4: Lithium
Question : Which of the following will replace hydrogen from acids to form salts?
Option 1: Sulfur
Option 2: Sodium
Option 3: Silver
Option 4: phosphorus
Question : Which gas is the major component of biogas?
Option 1: Compressed natural gas
Option 2: Methane
Option 3: Hydrogen
Option 4: Liquefied petroleum gas
Question : The gas dissolved in water that makes it basic is:
Option 1: Ammonia
Option 2: Sulphur Dioxide
Option 4: Carbon Dioxide
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