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WorksheetsIS MATTER AROUND US PURE
Total questions: 24
Worksheet time: 12mins
Name the mixture whose particles are large enough to scatter light:
True solution
Homogenous solution
Colloid
all of the above
Smell of Hydrogen sulfide gas
rotten eggs
burning tyre
pleasant
sweet
(a) is the non-metal which is in liquid state at room tempearture.
Which of the following techniques is used in diagnostic lab for blood and urine test:
Sublimation
Crystallization
Centrifugation
Evaporation
Which of the following is a chemical change?
cooking food
melting of wax
dissolving sugar in water
mixing iron fillings with sulfur powder
The continuous zig-zag movement of colloidal particles in a dispersion medium is called:
Oscillation
Tyndall effect
Dispersion
Brownian movement
A colloid with a solid dispersed phase and liquid dispersing medium is called (a) .
Which of the following is a true solution?
Blood
Milk
Chalk powder in water
Salt solution
(a) technique can be used to separate different components of chlorophyll.
We can separate crystals of alum from impure samples through (a) method.
(a) is the mixture of two or more metals or a metal and a non-metal and cannot be separated into their components by physical methods.
Name the flask
round bottom flask
flat bottom flask
conical flask
NAME THE APPARATUS
DISTILLATOR
CONDENSOR
FRACTIONATING COLUM
NAME THE SEPARATION TECHNIQUE
FRACTIONAL DISTILLATION
DISTILLATION
SEPARATING FUNNEL
EVAPORATION
NAME THE PROCESS
DISTILLATION
FRACTIONAL DISTILLATION
EVAPORATION
CONDENSATION
NAME THE SEPARATION TECHNIQUE DISTILLATION
EVAPORATION
DISTILLATION
CONDENSATION
NAME THE SEPARATION TECHNIQUE AND NAME THE COMPONENTS IT IS USED TO SEPARATE
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
The process used to separate oil and water is:
Distillation
Sublimation
Separating funnel
chromatography
Two substances A and B when bought together form a substance C with the evolution of heat. The properties of C are entirely different from those of A and B. the substance C is:
A compound
An element
A mixture
None of the above
A sample contains two substances and has uniform properties. The sample is:
A compound
A heterogeneous mixture
An element
A homogeneous mixture
.A student is given a mixture of iron filings and sulphur in thee ratio 1 : 2 by weight. He was then asked to heat the mixture over a flame and to observe the olor change. The student will observe that the mixture becomes:
Black
Grey
Yellow
Orange
Distillation is a good separation technique for:
Solids
Liquids
Solid alloys
Gases
If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of
Evaporation
Precipitation
Condensation
Sublimation
