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WorksheetsIs Matter Around Us Pure?
Total questions: 15
Worksheet time: 8mins
Which of the following apparatus is not required in sublimation?
Condenser
Funnel
China Dish
Wire gauze
Suspension is _______ mixture
Homogeneous
Saturated
Unsaturated
Heterogenous
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
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)
How will you seperate oxygen from a mixture of liquid air?
Centrifugation
Seperating funnel
Fractional distillation
Distillation
Tyndall effect is observed in forests because of
Trees
High oxygen level
Mist and dust particles in the air
Less sunlight
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
In which of the following constituents are present in the ratio?
Mixture
Solution
Compound
Colloid
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
A sample contains two substances and has uniform properties. The
sample is
A compound
A heterogeneous mixture
An element
A homogeneous mixture
what is the solute in the soda water?
water
carbon dioxide
sugar
oxygen
colloids can be separated by
filtration
distillation
sedimantation
centrifugation
what are atoms composed of?
Protons and electrons
Protons, neutrons and electrons
neutrons and electrons
ions, elements and compound
how will you seperate the components of sugar solution?
evaporation
crystallization
filteration
chromatography
burning of candle is a
physical change
chemical change
both physical and chemical change
none of these
