Physical Pharmaceutics I MCQ with Answers, FAQ, Important Questions

The following is applicable to supercritical fluids
A. Decreased viscosity than liquids
B. Decreased density than liquids
C. Increased viscosity than gases
D. All of the above

Answer: All of the above

Molar refraction is ————- property,
A. Additive
B. Additive and constitutive
C. Colligative
D. Constitutive

Answer: Additive and constitutive_________have significance in structural elucidation.
A. Dielectric constant
B. Refractive Index
C. Dipole moment
D. Both A & B

Answer: Dipole moment.

___________is a process in which vaporization of liquid mixture gives a mixture of
constituents from which desired one is separated in pure form.
A. Azeotropic distillation
B. Steam distillation
C. Fractional distillation
D. Binary distillation

Answer: Fractional distillation

Amorphous substance do not have__________
A. Sharp melting point
B. characteristic geometrical shape
C. regularity of the structure
D. all of the above

Answer: all of the above

Liquid crystals have applications in
A. Extraction
B. Temperature Monitoring stripes
C. Synthesis of co-crystals
D. Both A & B

Answer: Temperature Monitoring stripes

If the H+ concentration is 0.00001 M/l, what is the pH of the solution?
A. 9
B. 5
C. 14
D. None of the above

Answer: 9

For acidic drug solution containing 50% each of ionised and unionised drug, HendersonHasselbalch equation can be modified toE. pH=1/2 pkaF. pH=pkaG. pH= 2pKaH. pH=pka+log(ionised/unionised)

Answer: pH=pka

The ratio of the increment (amount added) of strong acid or base to the small change in
pH (Δ pH) brought about by this addition is termed as
A. buffer index
B. buffer value,
C. buffer efficiency
D. all of the above

Answer: all of the above

Which of the following statements is correct with regards to the solubility of gases in water
A. Increases with increase in pressure
B. Increases by addition of non-electrolytes
C. Increases with increase in temperature
D. Increases in case of chemical reaction

Answer: Increases with increase in pressure