Write one use of the following alloys: [2](a) Bronze(b) Fuse metal

Arrange the following as per the instruction given in the brackets: [3](a) Al, K, Mg, Ca (decreasing order of its reactivity)(b) N, Be, O, C (increasing order of non-metallic character)(c) P, Si, F, Be (decreasing order of valence electrons)

The following sketch illustrates the process of conversion of Alumina to Aluminium: [5]Study the diagram and answer the following:Name the constituent of the electrolyte mixture which has a divalent metal in it.Name the powdered substance ‘X’ sprinkled on the surface of the electrolyte mixture.What is the name of the process?Write the reactions taking place at the electrodes ‘Y’ (anode) and ‘Z’ (cathode) respectively.

The compound that is not an ore of aluminium: [1] Cryolite Corundum Fluorspar Bauxite

State a relevant reason for the following: [2](a) Hydrogen chloride gas cannot be dried over quick lime.(b) Ammonia gas is not collected over water.

Identify the cation in each of the following cases: [2](a) Ammonium hydroxide solution when added to Solution B gives a white precipitate which does not dissolve in excess of ammonium hydroxide solution.(b) Sodium hydroxide solution when added to Solution C gives a white precipitate which is insoluble in excess of sodium hydroxide solution.

Complete and balance the following equations: [3] (a) NH4Cl + Ca(OH)2 → (b) CuSO4 + NH4OH → (c) Cu + Conc. HNO3 →

The following questions are pertaining to the laboratory preparation of Ammonia gas from Magnesium nitride: [3](a) Write a balanced chemical equation for its preparation.(b) Why is this method seldom used?(c) How do you identify the gas formed?

Metals are good ............... [oxidizing agents / reducing agents] [1]

Fill in the blank with the correct choice:Higher the pH value of a solution, the more ............... [acidic / alkaline] it is. [1]

The ion which could be discharged most readily during electrolysis is ............... [Fe2+ / Cu2+] [1]

Fill in the blank with the correct choice:............... [Silver chloride / Lead chloride] is a white precipitate that is soluble in excess of Ammonium hydroxide solution. [1]