Chemrane

Which type of filtration is used in removing hardness?

Which method is used to remove yeast?

What is concentration polarization modulus?

• C_b/C_m

• C_b*C_m

• C_b-C_m

• None of these

What is the other name of diffusion dialysis?

• Donnan dialysis

• Donnann dialysis

• Doonnan dialysis

• Dhonnan dialysis

Which one is an asymmetric membrane?

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Which method is used for the concentration of fruit juice?

Which method is not employed in the preparation of asymmetric membrane?

• Precipitation by cooling

• Track etching

• Precipitation by evaporation

• Precipitation by immersion in a solvent

What is the molar transmembrane flux of species if

Permeability P= 10 units

Membrane thickness l= 10units

Driving force = 600units

• 500

• 200

• 400

• 600

What is a composite membrane?

• Same as symmetric membrane

• Same as asymmetric membrane

• Asymmetric membrane cast on a support

• Symmetric membrane running perpendicular to asymmetric membrane

The SDI measures:

• microbiological water quality

• scale-forming tendencies of the water

• colloidal matter in the water

• fouling potential of suspended solids