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Solved Thermodynamics MCQs Online Quiz Test
Q.1: Steam causes more sever burn than the boiling water because it possesses ———?
- Latent heat of fusion
- Latent heat of sublimation
- Latent heat of vaporization
- All of the above
C
Q.2: The conversion of vapours back into their liquid state is called———?
- crystallization
- evaporization
- vaporization
- condensation
D
Q.3: When water freezes at 0°C its density decreases due to——–?
- Change of bond angles
- Cubic structure of ice
- Change of bond length
- Empty space present in the structure of ice
D
Q.4: The boiling point increases down the zero group element due to———?
- Ion dipole forces
- London forces
- Hydrogen bonding
- Dipole dipole forces
B
Q.5: Rising of a wetting liquid in a capillary tube is due to———?
- Surface tension
- Cohesive forces
- Adhesive forces
- viscosity
C
Q.6: The number of formula units in 29.25g of common salt———?
- 6.022 x 1023
- 2 x NA
- 4 x 6.022 x 1023
- 3.01 x 1023
D
Q.7: Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it ?
- Liquid do not have definite shape
- Liquid do not have definite volume
- Lieuid is highly compressible
- Liquid molecules can slide over each other
D
Q.8: Molar heat of vaporization of water is———?
- 40.7 KJ/mole
- 40.7 J/mole
- 40.7 cal/mole
- 40.7 Kcal/mole
A
Q.9: Crystallites are present in———?
- crystalline solids
- amorphous solids
- liquid crystals
- all of the above
B
Q.10: A malleable solid is one which can be———?
- Converted into wires
- Melted easily
- All of the above
- Converted into thin sheets
D