10th Class Chemistry Chapter 5 TestSALTS

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. According to the solubility rules, which of these groups of salt are always soluble in water?

   1. All sodium, potassium, and ammonium salts

   2. Barium and lead sulfates

   3. Silver and lead chlorides

   4. All

2. Where are the smaller sodium ions located in the sodium crystal cube?

   1. At the corners of the cube

   2. At the center of each face

   3. In the edges of the cube

   4. Floating outside the cube

3. What is the three dimensional network structure formed by ions in a salt called?

   1. Atomic cloud

   2. Liquid matrix

   3. Molecular chain

   4. Crystal lattice

4. When magnesium reacts with sulfuric acid, which gas is liberated?

   1. O₂

   2. CO₂

   3. H₂

   4. SO₂

5. Which of the following salt is used as a fungicide?

   1. Magnesium hydroxide

   2. Potassium nitrate

   3. Sodium carbonate

   4. Copper sulphate

6. Which salts are always soluble in water?

   1. Chlorides

   2. Sulphates

   3. Nitrates

   4. Carbonates

7. The melting points of ionic compounds depend upon which factors?

   1. Only on the color of the crystals

   2. Only on atmospheric pressure

   3. Charges on the ions and their sizes

   4. Mass of the substance

8. The strength of attraction between ions in a salt depends on:

   1. Temperature only

   2. Distance between ions only

   3. Magnitude of charges only

   4. Both magnitude of charges and distance

9. Copper sulphate is used in:

   1. Plastic making

   2. Water softening

   3. Glass manufacturing

   4. Both b and c

10. How do we test if the solution is ready for crystallization?

    1. By checking temperature

    2. By smelling it

    3. By changing its color

    4. By dipping a glass rod