Aqueous solution of raw sugar , when passed over beds of animal charcoal becomes colourless.Explain.

When a piece of copper is placed in an aqueous solution of silver nitrate , the colour of the solution becomes blue. This is due to ________.

When 48250 C of electricity is passed through an aqueous solution of NiI_(2) (atomic mass of Ni= 58.8) , the mass of nickel metal deposited would be_________.

When a current of 3A is passed through an aqueous solution of a palladium salt, the mass of Pd metal deposited in 1 hour is 2.98 g. If the metal's atomic mass is 106.4, the valency of palladium is _________.

When an aqueous solution of copper sulphate is electrolysed using copper electrodes the reaction at the anode is represented by

Manish was given aqueous solutions of silver nitrate, zinc sulphate and an iron nail. In the first experiment, he dipped iron nail in silver nitrate solution and observed that the solution turned brown. In second experiment, he dipped iron nail in zinc sulphate solution. However, no change was observed. Based on the above information, answer the following questions. Name the type of reaction that occurs when iron reacts with AgNO_3 solution.

Aqueous solutions of hydrogen suphide and sulphur dioxide when mixed together , yeild _________.

A 5% aqueous solution (by mass) of cane sugar (molar mass 342 g/mol) has freezing point of 271K. Calculate the freezing point of 5% aqueous glucdse solution if freezing point of water is 273.15K.

Choose the correct option from the bracket and explain the statement giving reason: (oxidation, displacement, electrolysis, reduction, zinc, copper, double, displacement, decomposition ) Addition of an aqueous solution of ZnSO_4 to an aqueous solution of BaCl_2 is an example of __ reaction

When SO_2 is passed through an aqueous solution of I_2 , it becomes colourless. This is due to

30xx10^(-4) kg of urea dissolved in water to make 500 mL aqueous solution and this solution is isotonic with cane - sugar solutions .How much mass of cane sugar in its one litre solutions ? (H=1,N=14,O=16,C=12)