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- 1. Multiple Choice
Air is regarded as a mixture because:
Its pressure may very
Its pressure may very
Its volume changes under different conditions
Its composition may vary
- 2. Multiple Choice
A sample contains two substances and has uniform properties. The sample is:
A compound
A heterogeneous mixture
An element
A homogeneous mixture
- 3. Multiple Choice
If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of
Evaporation
Precipitation
Condensation
Sublimation
- 4. Multiple Choice
What is the solute in the soda water?
Water
Carbon dioxide
Sugar
Oxygen
- 5. Multiple Choice
Which of the following is not a mixture?
Pure water.
Sea water.
Air.
Brass.
- 6. Multiple Choice
Which of the following is a heterogeneous mixture?
Air.
Brass.
Iodised table salt.
Steel.
- 7. Multiple Choice
Which of the following is an example of homogeneous substance?
Granite.
Copper sulphate.
m&m candy.
Muddy water.
- 8. Fill in the Blank
True or false
Element is always metal.
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