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Real gases conform more closely with the van der Waals equation of state than the ideal gas equation of state.
A
true
B
false
Correct Answer:
true
This happens particularly at higher pressures.
For the Van der Waals real gas equation Statement I: The unit of constant a is atm.L2/mole2 Statement II: The unit of constant b is L
A
Both statements are false
B
Only one can be true at a time
C
Both statement are true
D
None of the mentioned
Consider the following statements.
1. A real gas can be approximated as an ideal gas when it is highly dilute.
2. Only monoatomic gases can be approximated as ideal gases.
3. An ideal gas does not undergo phase transitions.
Which of the above statements are correct?
A
1 and 2
B
1 and 3
C
2 and 3
D
1, 2 and 3
The value of compressibility factor at the critical state for a van der Waals gas is
A
0.325
B
0.350
C
0.375
D
0.400
The internal pressure of a van der Waals gas is
A
independent of the molar volume
B
inversely proportional to the molar volume
C
inversely proportional to square of the molar volume
D
directly proportional to the molar volume
What are the units of “b” in van der Waals equation?
A
L/mol
B
L mol
C
1/L mol
D
L
What is the power of diminishment of van der Waals force with respect to distance?
A
2
B
4
C
6
D
8
A van der Waals bond is a _________ bond.
A
Primary
B
Secondary
C
Tertiary
D
Quaternary
Which of the following of a protein molecule determines the strength of van der Waals force?
A
The molecular weight of the protein
B
PI of the protein
C
Number of amino acids present
D
The surface area of the molecule
Van der Waals forces are the only attractive forces present in nonpolar compounds.
A
True
B
False
In physical adsorption the enzymes are attached to the matrix through hydrogen bonding, van der Waals forces, or hydrophobic interactions; whereas in ionic bonding, the enzymes are bound through?
A
Hydrophilic linkage
B
Di-sulphide bonding
C
Salt linkages
D
Cross-linking