Soluble and insoluble substances - class-VI
soluble and insoluble substances
Questions
Question 1 Multiple Choice (Single Answer)
How many of the following are soluble in water?
salt, sugar, sand, dust
- 1
- 2
- 3
- 4
Question 2 Multiple Choice (Single Answer)
Pick one material which is completely soluble in water:
- oil
- sawdust
- mud
- alum
Question 3 Multiple Choice (Single Answer)
Select a pair of solute and solvent materials to form solution:
- Chalk powder and water
- Alcohol and water
- Milk and oil
- Glass and water
Question 4 Multiple Choice (Single Answer)
Find odd one out on the basis of the solubility of the material.
- Sugar
- Salt
- Chalk
- Wood
Question 5 Multiple Choice (Single Answer)
Maximum of 9.72 g of potassium chloride dissolves in 30 g of water at $70^{\circ}$C. The solubility of potassium chloride at $70^{\circ} C$ is:
- 3.24 g
- 32.4 g
- 0.324 g
- 33.4 g
Question 6 Multiple Choice (Single Answer)
What do you understand by the statement "the solubility of copper sulphate in water at $20^{\circ}C$ is 20.7 g" ?
- A maximum of 20.7 grams of copper sulphate can be dissolved in 100 ml water at a temperature $20^{\circ}$C.
- A maximum of 20.7 grams of copper sulphate can be dissolved in 100 g of water at $20^{\circ}$C.
- A maximum of 20.7 grams of copper sulphate can be dissolved in 79.3 g of water at $20^{\circ}$C.
- A maximum of 20.7 grams of copper sulphate can be dissolved in 79.3 ml of water at $20^{\circ}$C.
Question 7 Multiple Choice (Single Answer)
In the solvation of $NaCl$ in water, which of the following occur ?
- Hydrogen atom interacts with $Cl^-$ atom
- Oxygen atom interacts with $Na^+$ atom
- Both $A$ and $B$
- None of these
Question 8 Multiple Choice (Single Answer)
Select the material which is insoluble in water.
- Glucose
- Washing soda
- Alcohol
- Benzene