Inorganic Chemistry - p-Block Elements (Class 12)

⏱ Time: 0s

Q1. Which of the following compounds is used as a dry cleaning solvent? (2022)

Solution:

Carbon tetrachloride is commonly used as a dry cleaning solvent.

⏱ Time: 0s

Q2. 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.

⏱ Time: 0s

Q3. Which of the following compounds is an example of a covalent compound? (2019)

Solution:

SiO2 (silicon dioxide) is a covalent compound formed by the sharing of electrons between silicon and oxygen.

⏱ Time: 0s

Q4. What is the primary use of sulfuric acid in the industry? (2023)

Solution:

Sulfuric acid is primarily used as battery acid in lead-acid batteries.

⏱ Time: 0s

Q5. Which of the following is the most stable oxidation state of lead? (2019)

Solution:

Lead commonly exhibits a +4 oxidation state, although +2 is also stable, +4 is more stable in many compounds.

⏱ Time: 0s

Q6. 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.

⏱ Time: 0s

Q7. What is the primary oxidation state of nitrogen in nitric acid (HNO3)? (2023)

Solution:

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

⏱ Time: 0s

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

Solution:

Fluorine is the most electronegative element in the periodic table.

⏱ Time: 0s

Q9. What is the primary use of sulfuric acid (H2SO4) in industry? (2019)

Solution:

Sulfuric acid is primarily used in the production of fertilizers.

⏱ Time: 0s

Q10. What is the main product of the thermal decomposition of ammonium dichromate? (2023)

Solution:

The thermal decomposition of ammonium dichromate produces chromium(III) oxide (Cr2O3) as the main product.