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Pharmaceutical Chemistry 2 Important Questions. We covered all the Pharmaceutical Chemistry 2 Important Questions in this post for free so that you can practice well for the exam.
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Pharmaceutical Chemistry 2 Important Objective Questions for Students
Adding sodium chloride to water while boiling eggs will
a) Lower the boiling point of water
b) Raise the boiling point of water
c) Stop the eggs from cracking
d) Improve the taste of the eggs
Option b – Raise the boiling point of water
The ratio of depression in freezing point for 0.01 M aqueous solutions of urea, sodium chloride, and sodium sulfate is
a) 1 : 1 : 1
b) 1 : 2 : 3
c) 1 : 2 : 4
d) 2 : 2 : 3
Option b – 1 : 2 : 3
A solution contains 4 g of solute per litre at 27°C. The osmotic pressure of this solution is
a) 0.1 atm
b) 0.3 atm
c) 0.4 atm
d) 0.9 atm
Option c – 0.4 atm
If two liquids A and B form an ideal solution, then
a) The enthalpy change of mixing is zero
b) The entropy change of mixing is zero
c) The free energy change of mixing is zero
d) Both free energy and entropy changes are zero
Option a – The enthalpy change of mixing is zero
When 2 g of a non-volatile solute is dissolved in 78 g of benzene, the vapour pressure of benzene at 80°C decreases by 10 mm Hg. If the vapour pressure of pure benzene is 750 mm Hg, the molar Mass of the solute is
a) 15
b) 150
c) 1500
d) 148
Option d – 148
The vapour pressures of pure ethanol and methanol are 42 mm Hg and 88.5 mm Hg respectively. An ideal solution is prepared by mixing 46 g of ethanol and 16 g of methanol. The mole fraction of methanol in the solution is
a) 0.467
b) 0.502
c) 0.647
d) 0.556
Option c – 0.647
The van’t Hoff factor (i) for a substance that dissociates in one solvent and associates in another solvent is respectively
a) Less than one and less than one
b) Greater than one and less than one
c) Greater than one and greater than one
d) Less than one and less than one
Option b – Greater than one and less than one
An aqueous solution is 1.00 molal in KI. Which of the following changes will increase the vapour pressure of the solution?
a) Adding sodium chloride
b) Adding sodium sulfate
c) Adding more 1.00 molal KI
d) Adding water
Option d – Adding water
The vapour pressure of water depends primarily on
a) The surface area of the container
b) The volume of the container
c) The temperature
d) None of the above
Option c – The temperature
We covered all the Pharmaceutical Chemistry 2 important Questions above in this post for free so that you can practice well for the exam.
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