Everyday Science MCQs

5120 MCQs  (Page 334 of 512)

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Molar heat of vaporization of water is_________________?
A. 40.7 kj/mole
B. 40.7 j/mole
C. 40.7 cal/mole
D. 40.7 kcal/mole
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Crystallites are present in_________________?
A. Crystalline solids
B. Amorphous solids
C. Liquid crystals
D. All of the above
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A malleable solid is one which can be_________________?
A. Converted into wires
B. Converted into thin sheets
C. Melted easily
D. All of the above
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Crystalline solids can be identified easily from their ___________________?
A. Sharp melting point
B. Definite geometry
C. Transition temperature
D. Colour
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Which one is false for evaporation ?
A. Surface phenomenon
B. Continuous
C. Exothermic
D. Cause cooling
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Which one of the following does not show hydrogen bonding?
A. Water
B. Ethyl alcohol
C. Phenol
D. Diethyl ether
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Which one is a conductor but is not malleable ?
A. Iron
B. Graphite
C. Silver
D. Platinum
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The density of water may be__________________?
A. Equal to that of ice
B. Greater than that of ice
C. Less than that of ice
D. All are possible
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Steam causes more sever burn than the boiling water because it possesses _________________?
A. Latent heat of fusion
B. Latent heat of vaporization
C. Latent heat of sublimation
D. All of the above
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The conversion of vapours back into their liquid state is called__________________?
A. Crystallization
B. Evaporization
C. Vaporization
D. Condensation
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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