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−

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]

Fill in the blank by choosing the correct answer: During electrolysis, the compound ............... in its molten state liberates reddish brown fumes at the anode. [NaCl / PbBr2] [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]

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

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?

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.

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)