Everyday Science MCQs

5120 MCQs  (Page 336 of 512)

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During which process empty spaces between particles become minimum ?
A. Ionization
B. Condensation
C. Fusion
D. Evaporation
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Which one of the following has highest volatility_________________?
A. Diethyl ether
B. Ethyl alcohol
C. Water
D. Ethylene glycol
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If we provide very high amount of heat to a liquid its boiling point will__________________?
A. Increase
B. Remains constant
C. Decrease
D. There will be no boiling
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A solid may be made up of_________________?
A. Atoms
B. Ions
C. Molecules
D. A, b, and c
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Amorphous substances posses_________________?
A. No definite geometry
B. No definite heat of fusion
C. No sharp melting points
D. All of the above
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Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?
A. More strength of h-bonding
B. More strength of london forces
C. Less polarizability
D. All of the above
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The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?
A. Vaporization
B. Evaporation
C. Crystallization
D. Sublimation
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Water has maximum density at __________________?
A. 0°c
B. 2°c
C. 4°c
D. 100°c
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Formation of vapours from the surface of a liquid is called________________?
A. Vapourization
B. Evaporation
C. Condensation
D. Cracking
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The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called________________?
A. Dipole-dipole forces
B. Ion dipole-dipole forces
C. London dispersion forces
D. Debye forces
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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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