INDIAN SCHOOL AL-GHUBRA
CLASS IX CHEMISTRY PRACTICALS
1. Size of the solute particles is in the order:
a)
b)
c)
d)
Colloidal Solution < True Solution < Suspension
True Solution < Colloidal Solution < Suspension
Suspension < True Solution < Colloidal Solution
Suspension < Colloidal Solution < True Solution
2. Size of solute particle in the colloidal solution is
a) 10-9 m to 10-7m
b) > 10-7 m
c) < 10-9 m
d) Equal to 10-9 m
3. Colloidal particles exhibit:
a) Tyndall Effect
b) Brownian Movement
c) Both Tyndall Effect and Brownian Movement
d) None of the above
4. Colloidal Solution is:
a) Transparent
b) Opaque
c) Translucent
d) None of the above
5. Size of solute particle in True Solution is:
a) < 10-9 m
b) >10-9 m
c) Equal to 10-9 m
d) None of the above
6. Size of solute particles in Suspension is:
a) > 10-9 m
b) < 10-9 m
c) Equal to 10-9 m
d) None of the above
7. Milk is an example of:
a) True Solution
b) Suspension
c) Colloidal Solution
d) None of the above
8. Colloidal particles:
a) Does not settle under any condition
b) Settles on cooling
c) Settles under gravity
d) Settles on centrifugation
9. Particles of True Solution are:
a) Visible to naked eye
b) Visible under a microscope
c) Invisible under all circumstances
d) May or may not be visible to naked eye
10. NaCl is an example of:
a) True Solution
b) Suspension
c) Colloidal Solution
d) None of the above
11. Difference between the particles of colloidal solution and the
particles of true solution is due to:
a) Diameter
b) Radius
c) Stability
d) Size of particle
12. A liquid scatters a beam of light and leaves no residue when passed
through filter paper. It is an example of:
a) True Solution
b) Colloidal Solution
c) Suspension
d) None of the above
13. Tyndall effect is observed in:
a) Solution
b) Solvent
c) Precipitate
d) Colloidal Solution
14. The term Dispersion medium and Dispersion Phase are associated
with:
a) Colloidal Solution
b) True Solution
c) Suspension
d) Solvent
15. Sand dissolved in water is an example of:
a) Colloidal Solution
b) Suspension
c) True Solution
d) None of the above
16. Brownian movement is observed in:
a) Colloidal Solution
b) Solvent
c) True Solution
d) Suspension
17. 10% solution of Glucose is:
a) 10g of glucose in 90g of water
b) 10g of water in 90g of glucose
c) 10g of glucose in 100g of water
d) 10g of water in 100g of glucose
18. There is equilibrium between dissolved and undissolved solute in:
a) Unsaturated solution
b) Saturated solution
c) Suspension
d) Oil
19. Jelly, Cheese and Butter are examples of:
a) Colloids
b) True Solution
c) Suspension
d) None of the above
20. If the solution contains more than the saturation concentration, it is
a) Unsaturated solution
b) Super Saturated Solution
c) Suspension
d) Concentrate Solution