Chemistry I X Solution of Suspension

Chemistry I X Solution of Suspension

1. Calculate the molarity of solution containing 4g NaOH in 500 cm3 solution:

a) M=0.4M
b) M=0.3M
c) M=0.1M
d) M=0.2M
2. Calculate the molality of solution containing 5.3g of Na2CO3 in 500g of water:

a) Molality=0.1m
b) Molality=0.3m
c) Molality=0.5m
d) Molality=0.6m
3. A solution is prepared by dissolving 1 mole of ethyl alcohol ( C2H5-OH) in 3 moles of water (H2O) Calculate mole fraction of ethyl alcohol and water.

a) XA=0.23 XB=0.72
b) XA=0.24 XB=0.70
c) XA=0.25 XB=0.75
d) XA=0.21 XB=0.71
4. The suspended particles in suspension are generally of the size:

a) 10nm
b) 100nano-m
c) 1200nm
d) 1nm
5. The sum of the mole fraction of solute and solvent is equal to :

a) 2
b) 5
c) 0
d) 1
6. Solubility is defined as the amount of solute in gram at a given temperature dissolved in:

a) 20g of solvent
b) 100g of solvent
c) 10g of solvent
d) 200g of solvent
7. The process in which a solid directly changes to vapours is known as :

a) Sublimation
b) Evaporation
c) Diffusion
d) Fusion
8. A solution , which contains excess amount of solute as compared to that of solvent is called :

a) Dilute
b) None of these
c) Concentrated
d) Aqueous
9. A mixture in which solute particles do not dissolve in solvent is called:

a) Molar solution
b) Colloidal solution
c) Suspension
d) None of the above
10. Which one of the following is soluble in water:

a) Kerosene oil
b) Methanol
c) Chloroform
d) None of the above
11. 4% by mass of sodium chloride means ___g sodium chloride per 100g of solution:

a) 4
b) 96
c) 58
d) 5
12. The example of liquid in liquid solution:

a) Carbonated water
b) Alcohol
c) Carbon di-sulphide
d) None of the above
13. ___________is an example of solid in solid solution:

a) Bronze
b) Fog
c) Smoke
d) None of these
14. Aqueous solution of NH4CI is:

a) Basic in nature
b) None of the above
c) Acidic in nature
d) Neutral
15. According to Henry's Law m=KP here 'm' means:

a) Constant
b) Mass
c) Amount of gas
d) None of these
16. A suspension of fine particles of gas in a liquid is called:

a) Emulsion
b) Foam
c) Smoke
d) None of the above
17. A suspension of droplets of one liquid into another liquid which in not soluble is called as:

a) Mud
b) Non of these
c) Mist
d) Emulsion
18. One nanometere(1mm)=_____________

a) 10-6
b) 10-8
c) None of the above
d) 10-9
19. One liter =__________________ml:

a) 100
b) 1000
c) 10000
d) 100000
 
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