CBES Board Class 9/Solutions Multiple Choice Questions CLASS 9 Sample Test,Sample questions

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Question: 
A mixture that has a uniform composition throughout is called

1. saturated solution

2. super saturated solution

3. solution

4. solvent

Question: 
An unsaturated solution

1. cannot dissolve more solute

2. cannot add more solvent

3. can add more solute

4. none of above

Question: 
At a particular temperature the solution which cannot dissolve more solute is called

1. saturated solution

2. saturated solution

3. unsaturated solution

4. aqueous solution

Question: 
Bypassing hydrogen gas through vegetable oil it is converted in to

1. butter

2. milk

3. ghee

4.condensed milk

Question: 
Colloids can

1. scatter light

2. not scatter light

3. absorb heat

4. evolve heat

Question: 
Commercially concentrated HCl is

1. 0.4

2. 0.5

3. 0.37

4. 0.8

Question: 
Fog is a solution to

1. air in water vapors

2. air in air

3. vapors in vapors

4.water vapors in air

Question: 
In amalgams the solvent is

1. gas

2. liquid

3. solid

4. none of above

Question: 
In solutions the particles are

1. invisible

2. visible by naked eye

3. visible by ordinary microscope

4. visible by electron microscope

Question: 
In the air the nitrogen gas acts as

1. solute

2.solvent

3. gaseous solute

4. aqueous solute

Question: 
In the presence of crystals of solute a supersaturated solution is

1. not stable

2. stable

3. cannot be made

4. none of above

Question: 
Mass of solute dissolved in 100g of a solution refers to

1. percentage of solution

2. molarity of solution

3. molality of solution

4. none of above

Question: 
olid solutions of metals are called

1. alloys

2. amalgams

3. saturated solutions

4. supersaturated solution

Question: 
Solubility is the amount of solute dissolved in

1. 50 g of solvent

2. 100 g of solvent

3. 250 g of solvent

4. 200 g of solvent

Question: 
Solutions that contain solid solutes in liquid solvents are called

1. liquids in solids

2. solids in liquids

3. solids in solids

4. solids in gas

Question: 
The concentration of a dilute solution is

1. high

2. very high

3. same

4.low

Question: 
The concentration of the solution is the quantity of

1. solvent in solute

2. solute in given solvent

3. gas dissolved in liquid

4. none of above

Question: 
The mass of NaOH present per dm3 of 0.25M NaOH solution is

1. 10 g

2. 8 g

3. 5 g

4. 2 g

Question: 
The methanol and water are

1. miscible

2. non miscible

3. forms saturated solution

4. forms supersaturated solution

Question: 
The molarity of solution which contains 40 g urea dissolved in 500cm3 is

1. 1.2 M

2. 1.389 M

3. 1.334 M

4. 1.5 M

Question: 
The number of moles of solute dissolved per dm3 of the solution is

1.molality

2.percentage

3.concentration

4.molarity

Question: 
The only liquid metal at room temperature is

1. sodium

2. iron

3. mercury

4. aluminum

Question: 
The particle size in suspension is

1. less than 103 nm

2. 102 nm

3. greater than 103

4. 10 nm

Question: 
The solubility of Na2SO4

1. increases with increase in temperature

2. decreases with increase in temperature

3. no effect on solubility with change in temperature

4. none of above

Question: 
The solution of copper and zinc forms

1. sodium

2. mercury

3.brass

4. silver

Question: 
The solution of mercury with other metals is called

1. amalgam

2. saturated solution

3. supersaturated solution

4. unsaturated solution

Question: 
The substance present in a lesser amount in solution is

1. solute

2. solvent

3.aqueous solvent

4. none of above

Question: 
To prepare ammonia gas the gaseous mixture of

1. hydrogen and chlorine is used

2.hydrogen and nitrogen is used

3. hydrogen and helium is used

4. hydrogen and iodine is used

Question: 
When NaCl is dissolved in water the negative end of water molecules is attracted towards

1. Cl

2. H

3. He

4. Na

Question: 
When the tiny particles of a substance are dispersed through a medium then the mixture is called

1. alloys

2.amalgams

3. suspension

4. colloid

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