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.Management Sciences
Category: Liquids and Solids
The number amino acid units for each turn of helix on average are____________________?
0
A. 21
B. 23
C. 25
D. 27
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
The conversion of vapours back into their liquid state is called__________________?
A. crystallization
B. evaporization
C. vaporization
D. condensation
Formation of vapours from the surface of a liquid is called________________?
A. vapourization
B. evaporation
C. condensation
D. cracking
The number of formula units in 29.25g of common salt_________________?
A. 6.022 x 1023
B. 3.01 x 1023
C. 2 x NA
D. 4 x 6.022 x 1023
The pressure during the molar heat of fusion is kept________________?
A. 0 atmosphere
B. one atmosphere
C. 2 atmosphere
D. 10 atmosphere
Crystallites are present in_________________?
A. crystalline solids
B. amorphous solids
C. liquid crystals
D. all of the above
Which one of the following does not show hydrogen bonding?
A. Water
B. Ethyl alcohol
C. Phenol
D. Diethyl ether
Hydrogen bonding is involved in____________________?
A. Solubility
B. Cleansing action of detergents
C. Biological molecules
D. All
The boiling point increases down the zero group element due to_________________?
A. Ion dipole forces
B. London forces
C. Hydrogen bonding
D. Dipole dipole forces
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