Quiz 19-August-2023

1/5 - (1 vote)

Labmonk quiz, NET Life Science,

#1. IVIVC utilizes the principles of statistical moment analysis:

Level C

Level A

Level D

Level B

#2. When Ke is constant and Ka is larger:-

Cmax more and tmax is short

Cmax is lesser and tmax is short

Cmax is more and tmax is longer

Cmax is lesser and tmax is longer

#3. The difficulties of long elution time and poor resolution of complex mixtures are observed in elution analysis. These difficulties can be overcome by modification of elution analysis, known as: -

Frontal analysis

Isocratic-elution analysis

Displacement analysis

Gradient-elution analysis

#4. Identify the starting material A and B in the synthesis of Clomifene.

Where A 4-hydroxy-benzophenone and B 2-diethylamino-ethyl chloride

Where A 4-hydroxy-benzophenone and B benzaldehyde

Where A 4-hydroxy benzaldehyde and B 4-methoxy aniline

Where A 4-hydroxy-benzophenone and B 4-methoxy aniline

#5. Which of the following solutions are more likely to have the same osmotic pressure? Solutions of:

Concentrated electrolytes with the same molal concentration

Diluted electrolytes with the same molal concentration

Concentrated nonelectrolytes with the same molal concentration

Diluted nonelectrolytes with the same molal concentration (b) (c) (d)

#6. Which equation is used to predict the stability of a drug product at room temperature from experiments at accelerated temperature?

The Arrhenius equation

Hildebrand equation

The Hixson-Crowell equation

Higuchi equation

#7. When considering drug delivery to the brain which of the following is false?

The cells in the blood vessels that supply the brain are tightly connected which restricts drug absorption

Drugs with a low log P value show improved passive diffusion into the brain (P: oil / water partition coefficient)

Polar molecules can be taken up into the brain through active transport

Only relatively small lipophilic molecules readily, passively diffuse into the brain

#8. Which statements are correct for the micelle formation? (P) Micelles are dynamic structures that are continually formed and broken down in solution. (Q) The typical micelle diameter is about 2–3 μm and so they are visible under the light microscope. (R) Micelle formation is a spontaneous process. (S) When the surfactant concentration is increased above the CMC, the number of micelles increases and the free surfactant concentration decreases below CMC.

P and Q

R and S

P and S

P and R

#9. Materials whose consistency depends on the duration of shear, as well as on the rate of shear, exhibit: -

Plasticity

Viscoelasticity

Thixotropy

Rheopexy

#10. Which statement correctly describes Hess’s Law?

Enthalpy changes can be calculated only if one or more of the reactants is/are element

The enthalpy change of a reaction is independent of the route of reaction

The enthalpy of all reactants in their standard states is defined as zero

The enthalpy change of a reaction can be calculated only at 1 atm pressure and 25 °C

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Quiz 19-August-2023

#1. IVIVC utilizes the principles of statistical moment analysis:

#2. When Ke is constant and Ka is larger:-

#3. The difficulties of long elution time and poor resolution of complex mixtures are observed in elution analysis. These difficulties can be overcome by modification of elution analysis, known as: -

#4. Identify the starting material A and B in the synthesis of Clomifene.

#5. Which of the following solutions are more likely to have the same osmotic pressure? Solutions of:

#6. Which equation is used to predict the stability of a drug product at room temperature from experiments at accelerated temperature?

#7. When considering drug delivery to the brain which of the following is false?

#9. Materials whose consistency depends on the duration of shear, as well as on the rate of shear, exhibit: -

#10. Which statement correctly describes Hess’s Law?

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