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Hassan
1.The volume of 0.025M H3PO4 required to neutralise 25ml of 0.03M Ca(OH)2 is
A. 20ml
B. 25ml
C. 40ml
D. 20ml
2.Mixing of table salt in water makes:
A. Mixture
B. Compound
C. Colloidal
D. Mixture
3.Which of the followings is electrolyte?
A. glucose
B. NaCI
C. sugar
D. glucose
4.For example 10 gm of sodium chloride is added in 90 gm of • water. This solution is
A. 10%
B. 50%
C. 90%
D. 10%
5.The number of moles of a solute per liter of a solution is
A. Molality
B. Normality
C. Molarity
D. Molality
6.The number of moles of a substance dissolved in in 1000 cm3 of solution is:
A. Molality
B. Normality
C. Molarity
D. Molality
7.A substance that releases hydrogen ions (If) is:
A. Acid
B. Salt
C. Alkali
D. Acid
8.Which of the followings is not acidic pH?
A. 5
B. 4
C. 7
D. 5
9.Which of the followings acts as natural buffer?
A. NaCI
B. Na2CO,
C. Nal ICO;
D. NaCI
10.The pH of blood remains at:
A. 4.3
B. 7.35
C. 9.23
D. 4.3
11.The mass of 150 cm³ of stone is 400 g. Its density is
A. 3.2 g cm-3
B. 2.6 g cm-3
C. 4 g cm-3
D. 3.2 g cm-3
12.SI unit of density is
A. kgm-4
B. kgm-3
C. kgm-2
D. kgm-4
13. (Density/mass) is equal to
A. power
B. area
C. energy
D. power
14. If the density of air is 1.3 kgm-3. The mass of air in a room measuring 8m×5m×4m is
A. 210 kg
B. 208 kg
C. 215 kg
D. 210 kg
15.The density of water is
A. 100 kgm-3
B. 10 kgm-3
C. 1000 kgm-3
D. 100 kgm-3
16.In liquids the particles
A. move randomly with unlimited space
B. move randomly with limited space
C. vibrate at a fixed position
D. move randomly with unlimited space
17.In gases the particles are
A. closely packed
B. not free to move
C. regularly packed
D. closely packed
18.Matter consists of tiny particles termed as
A. matter
B. atoms
C. ions
D. matter
19.Gases have
A. low density and mass
B. high density and mass
C. high density but low mass
D. low density and mass
20.If the temperature of the gas is increased, the kinetic energy would
A. increase
B. decrease
C. remain same
D. increase
21.In gases, the pressure is
A. directly proportional to volume
B. inversely proportional to volume
C. directly proportional to friction
D. directly proportional to volume
22.The mass per unit volume of a liquid at a standard temperature and pressure is called
A. specific weight
B. mass density
C. specific gravity
D. specific weight
23. The volume per unit mass of a liquid is called specific volume.
A. Yes
B. No
C. Both (a) and (b)
D. Yes
24.The weight per unit volume of a liquid at a standard temperature and pressure is called
A. specific weight
B. mass density
C. specific gravity
D. specific weight
25. The specific weight of water in S.I. units is taken as
A. 9.81 kN/m3
B. 9.81 x 103 N/m3
C. 9.81 x 10-6 N/mm3
D. 9.81 kN/m3
26.The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called
A. density of liquid
B. specific gravity of liquid
C. compressibility of liquid
D. density of liquid
27. The specific gravity has no units.
A. Agree
B. Disagree
C. Both (a) and (b)
D. Agree
28.The specific gravity of water is taken as
A. 0.001
B. 0.01
C. 0.1
D. 0.001
29.The specific weight of sea water is
A. same as
B. less than
C. more than
D. same as
30.The density of a liquid in kg / m3 is numerically equal to its specific gravity.
A. True
B. False
C. Both (a) and (b)
D. True
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