Class 6 General Science Notes: - Unit-7: Mixtures: Solved Exercise (MCQs)

A. MCQs (Choose the Correct Answers).

1. When sugar is mixed in water it becomes:

a. Element
b. Compound
c. Alloy
d. Mixture

... Answer is d. Mixture
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2. The process used to purify oil is called:

a. Evaporation
b. Distillation
c. Filtration
d. Winnowing

... Answer is b. Distillation
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3. Which one is Not an example of an alloy?

a. Brass
b. Steel
c. Iron
d. Bronze

... Answer is c. Iron
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4. The percentage of Nitrogen in the air is:

a. 35%
b. 78%
c. 87%
d. 21%

... Answer is b. 78%
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5. The maximum amount of solute that can be dissolved in a solvent at a specific temperature is called:

a. Solubility
b. Solution
c. Concentration
d. Mixture

... Answer is a. Solubility
----------------------

6. Which of the following is the property of mixtures:

a. The substance lose their original properties
b. The substances are mixed in a fixed amount
c. The substances can be separated by physical methods
d. Only one type of substance is mixed

... Answer is c. The substances can be separated by physical methods
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7. The solid particles which are left on filter paper while filtration are called: :

a. Residue
b. Filtrate
c. Solvent
d. Solute

... Answer is a. Residue
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8. Air is a mixture of different gases. This combination is an example of

a. Chemical combination
b. no chemical combination
c. no physical combination
d. both chemical and physical combination

... Answer is b. no chemical combination
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9. A mixture of sugar and grains is an example of:

a. Homogenous mixture
b. Heterogeneous mixture
c. Colloids
d. Solutions

... Answer is b. Heterogeneous mixture
------------------------
 

10. Soup powder is mixed with water, in this soup powder is an example of:

a. Solute
b. Solvent
c. Solution
d. Mixture

... Answer is a. Solute
----------------

MCQs of General Science Class-6:

Unit-1, Unit-2, Unit-3, Unit-4, Unit-5, Unit-6, Unit-7, Unit-8, Unit-9, Unit-10, Unit-11, Unit-12

Source: General Science Book (National Book Foundation, Pakistan)

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