Class 9
Subject Chemistry
Chapter Is matter around us pure
Assignment 02
1.) More than one kind of pure form of matter combines forming………..
a) Texture
b) Solution
c) Mixture
d) Component
ANS-Mixture
2.) Dissolved sodium chloride can be separated from water by…………………
a) Chemical process
b) Physical process
c) Chemical process of extraction
d) Physical process of evaporation
ANS-Physical process of evaporation
3.) Non uniform compositions of solutions called………….. solutions.
a) Mixture
b) Texture
c) Homogenous
d) Heterogeneous
ANS-Heterogeneous
4.) Uniform compositions of solutions called………… solutions.
a) Mixture
b) Texture
c) Homogenous
d) Heterogeneous
ANS-Homogenous
5.) Homogenous solution may separated by……………….
a) Chemical process
b) Physical process
c) filtration
d) Physical process of evaporation
ANS- Chemical process
6.) Mixture of two or more metals , or metals and non-metals called as…………
a) Alloy
b) Solution
c) Mixture
d) Metallic mixture
ANS-Alloy
7.) Alloy cannot be separated by……………..method
a) Chemical
b) Evaporation
c) Extraction
d) Physical
ANS-Physical
8.) Brass is mixture of………….. and……….. .
a) Zinc, carbon
b) Zinc, Mg
c) Zinc, Co
d) Zinc, Copper
ANS-Zinc, Copper
9.) Zinc and Copper get mixed by forming……….
a) Steel
b) Brass
c) Gold
d) Zinc carbon mixture
ANS-Brass
10.) Component present in large amount in solution called………….
a) Solute
b) Sugar
c) Solvent
d) Mixture
ANS-Solvent
11.) The component of solution that dissolved in solvent called……………
a) Solute
b) Sugar
c) Solvent
d) Mixture
ANS-Solute
12.) A component present in lesser quantity in solution called………..
a) Solute
b) Sugar
c) Solvent
d) Mixture
ANS-Solute
13.) A component present in more quantity in solution called……………
a) Solute
b) Sugar
c) Solvent
d) Mixture
ANS-Solvent
14.) Sugar in water..in that case sugar is …………..
a) Solute
b) Small particles
c) Solvent
d) Mixture
ANS-Solute
15.) Air is ………………….. mixture.
a) Heterogeneous
b) Gas
c) Solid
d) Homogenous
ANS- Homogenous
16.) if the solute particle size is smaller than …… then it cannot seen by naked eyes.
a) 1m
b) 1cm
c) 1mm
d) 1nm
ANS-1nm
17.) When no more solute can be dissolved in solution at given temperature is called………. Solution.
a) Homogenous
b) Heterogeneous
c) Saturated
d) Unsaturated
ANS-Saturated
18.) The amount of the solute present in the saturated solution at this temperature is called its………………….
a) Unsaturation
b) Diffusion
c) Collusion
d) Solubility
ANS-Solubility
19.) If the amount of solute contained in the solution is less than the saturation level…it called as……………
a) Saturated solution
b) Unsaturated solution
c) Homogenous solution
d) Heterogeneous solution
ANS-Unsaturated solution
20.) The concentration of solution is the depend on amount of …………………. Present in given solution.
a) Solvent
b) Solution
c) Pericles
d) Solute
ANS-Solute
21.) Mass of solute divided by mass of solution multiply by 100 then we get?
a) Solution
b) Mass
c) Mass percentage of solution
d) Volume percentage
ANS-Mass percentage of solution
22.) Mass of solute divided by volume of solution multiply by 100 then we get?
a) Solution
b) Mass
c) Mass percentage of solution
d) Mass by Volume percentage of solution
ANS- Mass byVolume percentage of solution
23.) If the solution is 400 ml and solvent is 300ml so what is percentage of solute?
a) 30
b) 40
c) 45
d) 25
ANS-25
24.) Solids are disperse in liquids called……
a) Diffusion
b) Dissolution
c) Collusion
d) Suspension
ANS-Suspension
25.) Suspension is ……………… mixture.
a) Saturated
b) Unsaturated
c) Homogenous
d) Heterogeneous
ANS-Heterogeneous
26.) Mixture of water and milk shows……………….. effect.
a) Solubility
b) Diffusion
c) Tyndall
d) Brightening
ANS-Tyndall
27.) Colloid is ………… mixture.
a) Saturated
b) Unsaturated
c) Homogenous
d) Heterogeneous
ANS-Heterogeneous
28.) …………….. particles are scattered a beam of light passing through it and make its path visible.
a) Solute
b) Solvent
c) Colloidal
d) None of the above
ANS-Colloidal
29.) Foam is the example of…………
a) Scattering light
b) Colloids
c) Saturated solution
d) Unsaturated solutions
ANS-Colloids
30.) We can separate the volatile component from its non volatile solute by the method of………….
a) Extraction
b) Separation
c) Filtration
d) Evaporation
ANS- Evaporation
31.) Solid particle are not soluble in solution. That can be separated by the………
a) Extraction
b) Separation
c) Filtration
d) Evaporation
ANS- Filtration
32.) Solid particles are very small in solution which cannot separated by filtration that solution separated by ………………….
a) Dissolution
b) Collusion
c) Suspension
a) Centrifugation
ANS-Centrifugation
33.) Centrifugation do not used in………..
a) Diagnostic laboratories
b) Separate butter and cream
c) To separate water and sugar
d) Used in washing machines
ANS-To separate water and sugar
34.) Two immiscible layers can separate out in layer depending on their …………………
a) Volume
b) Surface tension
c) Density
d) Viscosity
AN-Density
35.) ……………………….solutions can separated depending upon their densities.
a) Miscible solution
b) Water
c) Immiscible
d) Colloidal
ANS-Immiscible
36) Separation of camphor and salt done by…………… method
a) Dissolution
b) Collusion
c) Sublimation
d) Suspension
ANS-Sublimation
37.) Separation of dyes and black ink using ……………………. Method.
a) Dissolution
b) Chromatographic
c) Sublimation
d) Suspension
ANS-Chromatographic
38.) ………………. Is a mixture of 2 or more colors.
a) Alloy
b) Dyes
c) Ink
d) Paints
ANS-Dyes
39.) Kroma means?
a) Dyes
b) Colors
c) Paints
d) Natural colors
ANS-Colors
40.) ……………………….. is method to separate two miscible liquids.
a) Collusion
b) Sublimation
c) Suspension
d) Distillation
ANS-Distillation
41.) Chromatographic method used to separate
a) Colors in dye
b) Drug from blood
c) Tea powder from factory
d) Drugs from blood
ANS-Tea powder from factory
42.) Two miscible liquids having boiling point less than 25K can separated by ……………..
a) Distillation
b) Sublimation
c) Suspension
d) Fractional distillation
ANS-Fractional distillation
43.) ………………………… method used for separation of petroleum products.
a) Distillation
b) Sublimation
c) Suspension
d) Fractional distillation
ANS-Fractional distillation
44.) Boiling point of oxygen.
a) -280
b) -183
c) -130
d) -220
ANS- -183
45.) Boiling point of nitrogen
a) -196
b) -183
c) -130
d) -220
ANS- -196
46.) Crystallization method is used to purify………..
a) Liquid
b) Gas
c) Solid
d) Miscible liquids
ANS-Solids
47.) ………………….. method is used to purify solid.
a) Distillation
b) Sublimation
c) Fractional distillation
a) Crystallization
ANS-Crystallization
48.) Crystal alum separated from impure samples by……………………. Method.
a) Distillation
b) Sublimation
c) Fractional distillation
d) Crystallization
ANS-Crystallization
49.) Chemical change shown in reaction called……………
a) Physical reaction
b) Chemical reaction
c) Saturated
d) Substitution reaction
ANS-Chemical reaction
50.) Two or more atoms combined together forming….
a) Element
b) Molecule
c) Atoms
d) None of the above
ANS-Molecule
