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Home » Engineering » Chemical Engineering » Aptitude Test - 8
1.A substance that releases hydrogen ions (If) is:
A. Acid
B. Salt
C. Alkali
D. Acid
2.Which of the followings is not acidic pH?
A. 5
B. 4
C. 7
D. 5
3.Which of the followings acts as natural buffer?
A. NaCI
B. Na2CO,
C. Nal ICO;
D. NaCI
4.The pH of blood remains at:
A. 4.3
B. 7.35
C. 9.23
D. 4.3
5.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
6.SI unit of density is
A. kgm-4
B. kgm-3
C. kgm-2
D. kgm-4
7. (Density/mass) is equal to
A. power
B. area
C. energy
D. power
8. 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
9.The density of water is
A. 100 kgm-3
B. 10 kgm-3
C. 1000 kgm-3
D. 100 kgm-3
10.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
11.In gases the particles are
A. closely packed
B. not free to move
C. regularly packed
D. closely packed
12.Matter consists of tiny particles termed as
A. matter
B. atoms
C. ions
D. matter
13.Gases have
A. low density and mass
B. high density and mass
C. high density but low mass
D. low density and mass
14.If the temperature of the gas is increased, the kinetic energy would
A. increase
B. decrease
C. remain same
D. increase
15.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
16.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
17. The volume per unit mass of a liquid is called specific volume.
A. Yes
B. No
C. Both (a) and (b)
D. Yes
18.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
19. 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
20.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
21. The specific gravity has no units.
A. Agree
B. Disagree
C. Both (a) and (b)
D. Agree
22.The specific gravity of water is taken as
A. 0.001
B. 0.01
C. 0.1
D. 0.001
23.The specific weight of sea water is
A. same as
B. less than
C. more than
D. same as
24.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
25.The specific weight is also known as weight density.
A. Correct
B. Incorrect
C. Both (a) and (b)
D. Correct
26.The variation in the volume of a liquid with the variation of pressure is called
A. surface tension
B. compressibility
C. capillarity
D. surface tension
27.The reciprocal of compressibility is known as
A. Young’s modulus
B. expansion index
C. Bulk modulus
D. Young’s modulus
28.When a small diameter tube is dipped in water, the water rises in the tube with an upward ……….. surface.
A. flat
B. concave
C. parabolic
D. flat
29.A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because
A. it is easier to see through the glass tube
B. glass tube is cheaper than a metallic tube
C. it is not possible to conduct this experiment with any other tube
D. it is easier to see through the glass tube
30.Mercury does not wet the glass. This is due to property of the liquid known as
A. cohesion
B. adhesion
C. viscosity
D. cohesion
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