Inorganic Chemistry - p-Block Elements (Class 12)

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Q1. Which of the following is a characteristic property of group 13 elements? (2019)

Solution:

Group 13 elements typically form covalent compounds due to their tendency to share electrons.

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Q2. What is the primary use of sodium bicarbonate (NaHCO3)? (2020)

Solution:

Sodium bicarbonate is used in baking, cleaning, and medicine, making it versatile.

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Q3. Which of the following compounds is used as a fire retardant? (2021)

Solution:

Boric acid is commonly used as a fire retardant due to its ability to inhibit combustion.

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Q4. Which of the following elements does not form a stable oxide? (2023)

Solution:

Lead does not form a stable oxide in the same way as the other elements listed.

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Q5. What is the primary oxidation state of nitrogen in nitric acid (HNO3)? (2023)

Solution:

In nitric acid, nitrogen has an oxidation state of +5.

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Q6. Which of the following is a characteristic property of noble gases? (2019)

Solution:

Noble gases are colorless and odorless under standard conditions.

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Q7. Which of the following compounds is used as a bleaching agent? (2022)

Solution:

Hydrogen peroxide (H2O2) is commonly used as a bleaching agent.

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Q8. Which of the following is the most electronegative element? (2023)

Solution:

Fluorine is the most electronegative element in the periodic table.

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Q9. Which of the following is the most stable oxidation state of nitrogen? (2019)

Solution:

The most stable oxidation state of nitrogen is +5, as seen in compounds like nitric acid.

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Q10. Which of the following compounds contains a coordinate bond? (2023)

Solution:

Carbon monoxide (CO) contains a coordinate bond between carbon and oxygen.