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i) Define a membrane in a process engineering context. Two of the main desired attributes of membranes are high permeability and high selectivity. Define permeability and select
Which of the following principles/rules limits the maximum number of electrons in an orbital to two: (1) Aufbau principle (2) Pauli's exclusion principle (3) Hund's rule
The molar concentration of an HCl solution is 12.4 mol/L. How many moles of Hcl is in 1.50 L of HCl solution
The position and velocity of a small particle like electron cannot be simultaneously determined." This statement is: (1) Heisenberg uncertainty principle (2) Principle of
The principal quantum number represents : (1) Shape of an orbital (2) Distance of electron from nucleus (3) Number of electrons in an orbit (4) Number of orbitals in an
Q. Determine the Ionization in Solutions? Ans. Ionic compounds dissolve in water because the polar water molecule pulls apart the ions of the ionic compound. This process
Uses Trihydric alcohols (a) It is used as antifreeze in automobile radiator. (b) It is used in the preparation of good quality of soap-hand lotions shaving creams and tooth
Directive effect in mono substituted benzene derivatives: The substituent previously present on the benzene ring directs the incoming substituent to inhabit ortho (2 or 6), met
diagonal relationships
Soaps and detergents Sodium and pottasium salts of fatty acids such as palmitic acid, stearic acid, oleic acid etc are called soaps, while detergents are ammonium or sulphonate
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