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- 1. Multiple Choice
Which of the following apparatus is not required in sublimation?
Condenser
Funnel
China Dish
Wire gauze
- 2. Multiple Choice
Suspension is _______ mixture
Homogeneous
Saturated
Unsaturated
Heterogenous
- 3. Multiple Choice
Cooking of food and digestion of food
Are both physical processes
Are both chemical processes
Cooking is physical whereas digestion is chemical
Cooking is a chemical whereas digetion is physical
- 4. Multiple Choice
Which of the following are homogeneous in nature?
(1) Ice (2) Wood (3) Soil (4) Air
(1) and (3)
(2) and (4)
(1) and (4)
(3) and (4)
- 5. Multiple Choice
How will you seperate oxygen from a mixture of liquid air?
Centrifugation
Seperating funnel
Fractional distillation
Distillation
- 6. Multiple Choice
Tyndall effect is observed in forests because of
Trees
High oxygen level
Mist and dust particles in the air
Less sunlight
- 7. Multiple Choice
Air is regarded as mixture because?
It's pressure may vary
It's temperature may vary
Volume changes under different compositions
It's compositions may vary
- 8. Multiple Choice
In which of the following constituents are present in the ratio?
Mixture
Solution
Compound
Colloid
- 9. Multiple Choice
When a saturated solution is heated and more solute is dissolved in it, what is such a solution called?
Supersaturated Solution
Colloidal Solution
Aqueous Solution
Thermo Saturated Solution
- 10. Multiple Choice
A sample contains two substances and has uniform properties. The
sample is
A compound
A heterogeneous mixture
An element
A homogeneous mixture
- 11. Multiple Choice
what is the solute in the soda water?
water
carbon dioxide
sugar
oxygen
- 12. Multiple Choice
colloids can be separated by
filtration
distillation
sedimantation
centrifugation
- 13. Multiple Choice
what are atoms composed of?
Protons and electrons
Protons, neutrons and electrons
neutrons and electrons
ions, elements and compound
- 14. Multiple Choice
how will you seperate the components of sugar solution?
evaporation
crystallization
filteration
chromatography
- 15. Multiple Choice
burning of candle is a
physical change
chemical change
both physical and chemical change
none of these
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