Chemistry – Class 12 Mock Test 4

10%

Question 1 of 10

1. Which of the following is incorrect about Hypophosphorous acid?

It is also called phosphonic acid

It is represented by the formula H₃PO₂

It is monobasic

The oxidation state of phosphorus is +1

Question 1 of 10

Question 2 of 10

2. What product(s) is/are formed when aluminum metal is treated with concentrated nitric acid?

Al₄O₃

Al (NO₂) ₃ + H₂

Al₂O₃

Al (NO₃) ₃

Question 2 of 10

Question 3 of 10

3. What is the chemical formula structure of ozone?

O = O^- – O⁺

O^- = O⁺ – O

O = O⁺ – O^-

O^- – O = O⁺

Question 3 of 10

Question 4 of 10

4. Which of these gases is released upon treating zinc with diluted and then concentrated nitric acid?

Nitrous oxide and nitric oxide

Nitrogen dioxide and nitrous oxide

Nitric oxide and nitrous oxide

Nitrous oxide and nitrogen dioxide

Question 4 of 10

Question 5 of 10

5. What is the general outer electronic configuration of the Oxygen family?

ns²np²

ns²np⁵

ns²np⁴

ns²np³

Question 5 of 10

Question 6 of 10

6. What is formed when amphoteric oxides react with an alkali solution?

Acid

No reaction

Salt and water

Salt only

Question 6 of 10

Question 7 of 10

7. Which of the following is the most popular oxoacid of sulfur?

Sulfuric acid

Peroxodisulfuric acid

Pyrosulfuric acid

Sulfurous acid

Question 7 of 10

Question 8 of 10

8. Which of the following is the correct order of acidic strength?

HClO₄ = HClO₃ = HClO₂

HClO₂ > HClO₄ > HClO₃

HClO₄> HClO₃ > HClO₂

HClO₄ < HClO₄ < HClO₂

Question 8 of 10

Question 9 of 10

9. What is the range of the oxidation states shown by phosphorus in its oxoacids?

+1 to +2

+2 to +4

+1 to +3

+1 to +5

Question 9 of 10

Question 10 of 10

10. Which of the following is a property of phosphine?

It is inflammable

The solution of phosphine in water decomposes in the presence of light

It acts as a Lewis acid

It is insoluble in water

Question 10 of 10