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, Henderson
Hasselbalch equation can be modified to
E. pH=1/2 pka
F. pH=pka
G. pH= 2pKa
H. 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
Wednesday, January 12, 2022