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CBES Board Class 9 MCQ Quiz Hub
Solutions Multiple Choice Questions CLASS 9
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1. Bypassing hydrogen gas through vegetable oil it is converted in to
butter
milk
ghee
condensed milk
2. Fog is a solution to
air in water vapors
air in air
vapors in vapors
water vapors in air
3. To prepare ammonia gas the gaseous mixture of
hydrogen and chlorine is used
hydrogen and nitrogen is used
hydrogen and helium is used
hydrogen and iodine is used
4. The solution of copper and zinc forms
sodium
mercury
brass
silver
5. The number of moles of solute dissolved per dm3 of the solution is
molality
percentage
concentration
molarity
6. A mixture that has a uniform composition throughout is called
saturated solution
super saturated solution
solution
solvent
7. The solution of mercury with other metals is called
amalgam
saturated solution
supersaturated solution
unsaturated solution
8. Solubility is the amount of solute dissolved in
50 g of solvent
100 g of solvent
250 g of solvent
200 g of solvent
9. At a particular temperature the solution which cannot dissolve more solute is called
saturated solution
saturated solution
unsaturated solution
aqueous solution
10. Commercially concentrated HCl is
0.4
0.5
0.37
0.8
11. olid solutions of metals are called
alloys
amalgams
saturated solutions
supersaturated solution
12. The mass of NaOH present per dm3 of 0.25M NaOH solution is
10 g
8 g
5 g
2 g
13. In solutions the particles are
invisible
visible by naked eye
visible by ordinary microscope
visible by electron microscope
14. The concentration of a dilute solution is
high
very high
same
low
15. In amalgams the solvent is
gas
liquid
solid
none of above
16. The substance present in a lesser amount in solution is
solute
solvent
aqueous solvent
none of above
17. When the tiny particles of a substance are dispersed through a medium then the mixture is called
alloys
amalgams
suspension
colloid
18. The particle size in suspension is
less than 103 nm
102 nm
greater than 103
10 nm
19. The molarity of solution which contains 40 g urea dissolved in 500cm3 is
1.2 M
1.389 M
1.334 M
1.5 M
20. An unsaturated solution
cannot dissolve more solute
cannot add more solvent
can add more solute
none of above
21. The concentration of the solution is the quantity of
solvent in solute
solute in given solvent
gas dissolved in liquid
none of above
22. Colloids can
scatter light
not scatter light
absorb heat
evolve heat
23. When NaCl is dissolved in water the negative end of water molecules is attracted towards
Cl
H
He
Na
24. Solutions that contain solid solutes in liquid solvents are called
liquids in solids
solids in liquids
solids in solids
solids in gas
25. The solubility of Na2SO4
increases with increase in temperature
decreases with increase in temperature
no effect on solubility with change in temperature
none of above
26. In the presence of crystals of solute a supersaturated solution is
not stable
stable
cannot be made
none of above
27. Mass of solute dissolved in 100g of a solution refers to
percentage of solution
molarity of solution
molality of solution
none of above
28. The methanol and water are
miscible
non miscible
forms saturated solution
forms supersaturated solution
29. In the air the nitrogen gas acts as
solute
solvent
gaseous solute
aqueous solute
30. The only liquid metal at room temperature is
sodium
iron
mercury
aluminum
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