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Q. In the study of the rate of a reaction, 100 ml of 0.1 N hydrochloric acid is added to 10 ml methyl acetate for the reaction to occur. The reason for making such a proportion is to make:

Q. When cumulative percent frequency on a probability scale is plotted against logarithm of the particle size, 50 percent on the probability scale gives the powder particle diameter of:

Q. An o/w microemulsion is prepared using a hydrophilic surfactant. The appearance of the microemulsion is:

Q. Which of the following properties of a particle significantly affects the physical, chemical and biological properties of the drug?

Q. Rate of reaction is the

Q. ............ exists when dispersed solid particles in a suspension retain change in relation their adjoining liquid medium.

Q. which of the following is cause of physical degradation of drug?

Q. If zeta potential of a suspension is high, then the system will be considered as

Q. Which type of colloidal material is used commonly in the preparation of a structured vehicle?

Q. When coulter-counter apparatus is employed for powder analysis, the following criterion is important: