Solutions

Q. Question 14

In the refining of silver, the recovery of silver from silver nitrate solution involves displacement by copper metal. Write down the reaction involved.

Q.

What is the short definition for homogeneous and heterogeneous mixture???

Q.

Phenolphthalein indicator is used in the pH range

1. $3.2-4.4$

2. $4.8-6.0$

3. $6.8-8.4$

4. $8.2-10.0$

Q. The concentration of [H+] and concentration of [OH ] of a 0.1 M aqueous solution of 2% ionised weak acid is [ionicproduct of water = 1/10] (1) 2/10 M and 5/10 M (2) 1/10M and 3/10 M (3) 0.02/10 M and 5/10 M (4) 3/10 M and 4/10 M

Q. What is a solution?

Q.

A solution contains 20 g of sodium chloride dissolved in 80 g of water. The concentration of this solution by mass percentage method is

1. 10%
2. 25%
3. 80%
4. 20%

Q.

Why does the solubility of a solute decrease with an increase in temperature?

Q.

Differentiate between solids, liquids and gases with respect to compressibility.

Q. What's are the solute and solvent present in a tincture of iodine?

Q.

What is the difference between concentration of a solution and solubility?

Q.

Did suspension show tyndall effect?how?

Q.

Is milk an emulsion or suspension?

Q.

Camphor changes directly into gaseous state without changing into liquid state.

1. True

2. False

Q. Solutions cannot be separated by the process of filtration.

1. True
2. False

Q.

Which among the following is present in aerated drinks ?

1. Water and carbon monoxide

2. Oxygen and water

3. Air and water

4. Carbon dioxide and water

Q. The amount of solute present in a given amount of solution represents:

1. concentration
2. saturation
3. dispersion
4. absorption

Q.

What is the name of the clear liquid formed when a solid dissolves in a liquid?

Q.

In soda water identify the solvent?

Q.

What is another name for a homogeneous mixture?

Q.

What are supersaturated solution give some examples

Q.

Sugar solution is an example of _________

Q.

Identify the solute and solvent in 80% solution of ethyl alcohol with water.

Q.

The solubility of potassium chloride in water at 20 °C is 34.7 g in 100 g of water. The density of the solution is 1.3 g mL^-1. Calculate the concentration of potassium chloride in the solution in: % (m/m)

Q.

How can a true solution be separated by physical means

Q.

A mixture of milk and water can be separated by filtration. (True or False)

1. True
2. False

Q.

Give an example of a solution in which both the solute and solvent are solids.

Q.

Choose the right answer:

Which of the following show "Tyndall effect"?

A)Salt solution

B)sugar solution

C) copper sulphate solution

D)milk

Q.

A material containing two or more substances is known as a mixture. Mixtures can be classified as homogeneous and heterogeneous depending upon the composition of substances present.

-A mixture is said to be homogeneous if its

1. Components exist in more than one state

2. Composition is not uniform throughout

3. Components exist in only liquid state

4. Composition is uniform throughout

Q.

Brass is a mixture of two elements copper and zinc.

1. True

2. False

Q.

Name the mixture whose particles are big enough to be seen with naked eye.

1. True solution

2. Homogeneous mixture

3. Suspension

4. Colloidal solution