Choose the correct answer:
By passing 96500 C of electriciy through aqueous `Al_2O_3` the amount of Al produced is 27g/9g

Choose the correct answer: int_0^(2/3)(dx/(4+9x^2)) equals:

The mixture of compounds A and B is passed through a column of Al_2O_3 by using alcohol as eluant . Compound A is eluted in preference to compound B. Which of the compounds A or B, is more readily adsorbed on the column?

Al_2O_3 is reduced by elecrrolysis at low potentals and high current. If 4.0xx10^4 amperes of current is passed through molten Al_2O_3 for 6 hours, what mass of aluminium is produced?

Each question contains STATEMENT-1 (Assertion) and STATEMENT-2( Reason). Examine the statements carefully and mark the correct answer according to the instruction given below: STATEMENT-1: The equilibrium of A(g) iffB(g)+c(g) is not affected by changing the volume. STATEMENT-2: K_(c) for the reaction does not depend on volume of the container.

A human heart discharges 75 cc of blood the through the artcries at each beat against an average pressure of 10 cm ofmercutry.Assuming that the pulse frequency is 72 per minute,the rate of working of heart is watt is (density of mercury = 13.6 g cm^-3 and g = 9.8 m s^(-2) ):

What is the coordination entity formed when excess of aqueous KCN is added to the aqueous solution of copper sulphate? Why is it that no precipitate of copper sulphide is obtained when H_2S (g) is passed through this solution .

A bottle of an aqueous H_2O_2 solution is labelled as '28 V' H_2O_2 and the density of the solution (in g/mL) is 1.25 . Choose the corrects option : A) Molality of H2O2 is 2 B) Molarity of H2O2 is 5 C) Molality of H2O2 is 2.15 D) None of these

Lowering in vapour pressure is determined by Ostwald and Walker dynamic methed. It is based on the prinicipal , that when air is allowed to pass through a solvent or solution, it takes up solventvapour with it to get itself saturated at that temperature I and II are weighted separately before and after passing dry air. Loss in mass of each set, gives the lowing of vapour pressure. The temperature of air, the solution and the solvent is kept constant. Dry air was passed thorough 9.24 g of solute in 108 g of water and then through pure water. The loss in mass of solution was 3.2 g and that of pure water 0.08 g . The molecular mass (g/mol) of solute is nearly :

How many moles of electrons are required to Produce 10.0 g of Al from molten Al_2O_3 ?

One Faraday of electricity is passed through molten Al_2O_3 , aqueous solution of CuSO_4 and molten NaCl taken in three different electrolyti cells connected in series. The mole ratio of Al, Cu and Na deposited at the respective cathode is