Porosity of a porous powder is defined as:

Related MCQs

• The porosity of powder is equal to
• Porosity is expressed in
• When charcoal powder is dusted on the surface of water, the contact angle (in degrees) that the charcoal exhibits is:
• 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:
• Sieving method is used for size distribution analysis of powder. The disadvantage of this method is:
• When coulter-counter apparatus is employed for powder analysis, the following criterion is important:
• Fisher subsieve sizer is used to determine the surface area of the powder. The surface area is measured based on the change in:
• The powder having low bulk density or large bulk volume is known as
• Emulsions are defined as thermodynamically unstable systems. The events that follow sequentially towards instability are: