9th class chemistry Chapter no.6 MCQs
Unit no.6 MCQS of 9th Class Chemistry
Solution:
1. Concentrated solution of common salt is called:
a. Jelly
b. Brine
c. Chalk solution
d. Paints
2. The example of universal solvent on Earth is:
a. Ammonia
b. Water
c. Ether
d. Alcohol
3. Which of the following is not an amorphous solid?
a. Glass
b. Rubber
c. Sodium chloride
d. Plastic
4. The example of true solution is:
a. Soap solution
b. Starch solution
c. Ink in water
d. Tooth paste
5. The compound which is used as a universal solvent is:
a. Alcohol
b. Water
c. Benzene
d. Petrol
6. The minimum components of a solution are:
a. Three
b. Five
c. Four
d. Tow
7. The simple method to differentiate between solution and
pure liquid is:
a. Hydration
b. Evaporation
c. Halogenation
d. Distillation
8. Solvent in soft drinks is:
a. Milk
b. Benzene
c. Oil
d. Water
9. Brass is an example of solid solution:
a. Zn + Cu
b. Zn + C
c. Zn + Al
d. Zn + Fe
10. Alloy is an example of:
a. Gaseous solution
b. Solid solution
c. None
d. Liquid solution
11. Sea water is an example of:
a. Gaseous solution
b. Solid solution
c. None
d. Liquid solution
12. Air is an example of:
a. Gaseous solution
b. Solid solution
c. None
d. Liquid solution
13. Dental amalgam is an example of:
a. Solid gaseous solution
b. Liquid solid solution
c. Solid solid solution
d. Solid liquid solution
14. The most common solutions are:
a. Gaseous solutions
b. Solid solutions
c. Liquid solutions
d. All
15. Sea water is a resource of ……… naturally occurring elements:
a. 92
b. 118
c. 86
d. 90
16. The solution which completely evaporates is called:
a. Solution
b. Pure solution
c. Saturated solution
d. Impure solution
17. Brass is an example of:
a. Saturated solution
b. Homogenous solution
c. Concentrated solution
d. Heterogeneous solution
18. In aqueous solutions, the solvent is always:
a. Brine
b. Oil
c. Petrol
d. Water
19. In sugar solution, the solvent is:
a. Sugar
b. Gas
c. Water
d. Petrol
20. In salt solution, the solute is:
a. Both
b. Salt
c. None
d. Water
21. The number of solutes that can be dissolved in a solvent are:
a. Three
b. One
c. Any number
d. Tow
22. When a saturated solution is diluted it turns into:
a. Concentrated solution
b. Supersaturated solution
c. None of these
d. Unsaturated solution
23. A solution containing maximum amount of solute is called:
a. Unsaturated solution
b. Concentrated solution
c. Super saturated solution
d. Saturated solution
24. A solution which have the capacity to dissolve more solute is called:
a. Unsaturated solution
b. Concentrated solution
c. Super saturated solution
d. Saturated solution
25. The capacity of saturated solution to dissolve more solute can be increased by increasing its:
a. Surface area
b. Pressure
c. Nature of the solute
d. Temperature
26. We can prepare super saturated solution from saturated solution by increasing its:
a. Surface area
b. Pressure
c. Nature of the solute
d. Temperature
27. We can dilute a solute by adding more ……… in it:
a. Sugar
b. Solute
c. Brine
d. Solvent
28. In concentrated solutions, ……… is present in excess amount:
a. Solution
b. Solvent
c. Water
d. Solute
29. Mist is an example of solution:
a. Solid in gas
b. Liquid in gas
c. Gas in solid
d. Gas in liquid
30. Which one of the following is a ‘liquid in solid’ solution?
a. Opal
b. Sugar in water
c. Fog
d. Butter
31. Which one of the following is heterogeneous mixture?
a. Milk of magnesia
b. Milk
c. Sugar solution
d. Ink
32. Mist is an example of:
a. Solid in gas
b. Liquid in gas
c. Gas in solid
d. Gas in liquid
33. Butter is an example of:
a. Gas in liquid
b. Liquid in gas
c. Solid in liquid
d. Liquid in solid
34. Alloy is an example of:
a. Solid in solid
b. Solid in gas
c. Liquid in solid
d. Solid in liquid
35. Which of the following is an example of solid in solid solution?
a. Butter
b. Opals
c. Dust in air
d. Fog
36. Opal is an example of:
a. Solid in solid
b. Liquid in gas
c. Gas in solid
d. Solid in gas
37. Types of solution are:
a. Nine
b. Seven
c. Ten
d. Eight
38. Air is an example of:
a. Solid in liquid
b. Liquid in gas
c. Liquid in solid
d. Gas in gas
39. Which of the following solution is an example of liquid in liquid solution?
a. Alcohol in water
b. Fog
c. Butter
d. Mist
40. Smoke in air is an example of:
a. Solid in gas
b. Gas in gas
c. Solid in solid
d. Gas in liquid
41. The example of liquid in liquid solution is:
a. Butter
b. Alcohol in water
c. Opals
d. Air
42. The example of liquid in gas is:
a. Fog
b. Air
c. Smoke in air
d. Oxygen
43. Sugar in water is an example of:
a. Liquid in solid
b. Liquid in gas
c. Solid in liquid
d. Gas in liquid
44. Cheese is an example of:
a. Liquid in solid
b. Liquid in gas
c. Solid in liquid
d. Gas in liquid
45. Concentration is ratio of:
a. Solvent to solution
b. Solvent to solute
c. Both a and b
d. Solute to solution
46. Which one of the following solutions contains more water?
a. 0.5M
b. 2M
c. 0.25M
d. 1M
47. If 10cm of alcohol is dissolved in 100g of water, it is called:
a. %v/w
b. %m/m
c. %v/v
d. %m/v
48. Molarity is the number of moles of solute dissolved in:
a. 1 dm3 of solvent
b. 1kg of solution
c. 1dm3 of solution
d. 100g of solvent
49. 5% sugar solution means:
a. 5 gram sugar is dissolved in 105 gram of water
b. 5 gram sugar is dissolved in 90 gram of water
c. 5 gram sugar is dissolved in 95 gram of water
d. 5 gram sugar is dissolved in 100 gram of water
50. The number of moles of solute dissolved in 1 dm solution is called:
a. Colloid
b. Solubility
c. Suspension
d. Molarity
51. Concentration is a ratio of:
a. Solvent to solution
b. Solvent to solute
c. A and B both
d. Solute to solution
52. The number of grams of solute dissolved in 100 grams of solution is called:
a. Volume/Mass
b. Mass/Mass
c. Volume/Volume
d. Mass/Volume
53. If the solute-solute forces are strong enough than those of solute-solvent forces. The solute:
a. Dissolves slowly
b. Dissolve readily
c. Dissolves and precipitates
d. Does not dissolve
54. Which one of the following will show negligible effect of temperature on its solubility?
a. NaNO3
b. KCl
c. NaCl
d. KNO3
55. ……… molar sugar solution is more concentrated:
a. 3
b. 1
c. 4
d. 2
56. The compound which does not dissolve in water is:
a. CuSO4
b. KCl
c. C6 H6
d. Na2 CO3
57. Which of the following dissolve in water?
a. Benzene
b. Alcohol
c. Petrol
d. Ether
58. The factors affecting solubility are:
a. Four
b. Tow
c. Five
d. Three
59. Like dissolve like is a basic principle of:
a. Solvent solute interaction
b. Saturated solution
c. Solubility
d. Concentrated solution
60. As we increase the temperature of the solution, its solubility:
a. Remains same
b. Increases
c. No change
d. Decreases
61. As we decrease the temperature of the solution, its solubility:
a. Remains same
b. Increases
c. No change
d. Decreases
62. When KCl is added in water, the test tube becomes:
a. Remains same
b. Hot
c. Breaks
d. Cold
63. When Li SO is dissolved in water, the test tube becomes:
a. Remains same
b. Hot
c. Breaks
d. Cold
64. A reaction in which heat is absorbed is called:
a. Spontaneous reaction
b. Exothermic reaction
c. Non spontaneous reaction
d. Endothermic reaction
65. Tyndall effect is shown by:
a. Jelly
b. Sugar solution
c. Chalk solution
d. Paints
66. Tyndall effect is due to:
a. By spreading of rays of light
b. By stopping the rays of light
c. By passing of rays of light
d. By not spreading of rays of light
67. The example of suspension is:
a. Jelly
b. Milk of magnesia
c. Tooth paste
d. Ink
68. The color of concentrated solution of potassium permanganate is:
a. Dark purple
b. Dark red
c. Shiny yellow
d. Dark green
69. The example of suspension is:
a. Milk
b. Starch
c. Paint
d. Blood
70. Milk of magnesia is an example of:
a. Colloid
b. Solution
c. Suspension
d. True solution
71. The example of false solution or colloid is:
a. Sugar in water
b. Paints
c. Salt in water
d. Starch
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