Match the Column A with Column B: [5]Column AColumn B(a) Sodium chloride1. has two shared pair of electrons(b) Methane2. has high melting and boiling points(c) Hydrogen chloride gas3. a greenhouse gas(d) Oxidation reaction4. has low melting and boiling points(e) Water5. Zn − 2e− ⟶ Zn2+6. S + 2e− ⟶ S2−

State the terms/process for the following: [5]The energy released when an atom in the gaseous state accepts an electron to form an anion.Tendency of an element to form chains of identical atoms.The name of the process by which Ammonia is manufactured on a large scale.A type of salt formed by partial replacement of hydroxyl radicals with an acid radical.The ratio of the mass of a certain volume of gas to the same volume of hydrogen measured under the same conditions of temperature and pressure.

Fill in the blank with the correct choice:Conversion of ethene to ethane is an example of ............... [hydration / hydrogenation] [1]

An example of a cyclic organic compound is: [1]PropenePenteneButeneBenzene

The hydrocarbon formed when sodium propanoate and soda lime are heated together: [1]MethaneEthaneEthenePropane

The general formula of hydrocarbons with single covalent bonds is: [1]CnH2n+2CnH2nCnH2n−2CnH2n−6

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.

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

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.

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]