Rita was given an unknown salt for identification. She prepared a solution of the salt and divided it into two parts. To the first part of the salt solution, she added a few drops of ammonium hydroxide and obtained a reddish-brown precipitate. To the second part of the salt solution, she added a few drops of silver nitrate solution and obtained a white precipitate. Name: (a) the cation present and (b) the anion present in the salt given for identification.

Differentiate between the following pairs based on the criteria given: (a) Sulphuric acid and Nitric acid (using barium chloride solution) (b) Unsaturated and Saturated hydrocarbons (type of bond present)

State the terms for the following: (a) The group obtained by removing one hydrogen atom from the parent alkane. (b) Two metal plates or wires through which the current enters and leaves the electrolytic cell. (c) The amount of substance which contains the same number of units as the number of atoms in carbon-12. (d) The tendency of an atom to pull a shared pair of electrons towards itself in a compound. (e) The formula which represents the simplest ratio between the atoms of elements present in a compound.

Match the following: Column A Column B (a) ZnCl2 from Zn 1. Precipitation (b) KNO3 from KOH 2. Direct combination (c) CaCO3 from CaCl2 3. Displacement 4. Neutralization

Match the Column A with Column B: Column A Column B (a) Water 1. Lithium (b) Alkali metal 2. Iodine (c) Halogen 3. Covalent compound (d) Calcium oxide 4. Acetic acid (e) Weak acid 5. Ionic compound 6. Sulphuric acid

Arrange the following as per the instructions given in the brackets: (a) Carbon, Fluorine, Beryllium (decreasing order of atomic size) (b) Sulphuric acid, Phosphoric acid, Acetic acid (increasing order of number of replaceable H atoms per molecule) (c) Potassium, Lithium, Sodium (increasing order of ionization potential)

Calcium carbonate reacts with dilute hydrochloric acid as given below: (a) What is the mass of 5 moles of calcium carbonate? (Relative molecular mass of calcium carbonate is 100) (b) How many moles of HCl will react with 5 moles of calcium carbonate? (c) What is the volume of carbon dioxide liberated at S.T.P. at the same time?

Mohan has three solutions P, Q and R having a pH of 13, 5 and 2 respectively. Which of the above solutions P, Q or R: (a) will react with Magnesium to liberate hydrogen gas? (b) will liberate ammonia gas when it reacts with ammonium chloride? (c) will contain molecules as well as ions?

Complete and balance the following equations: (a) Al2O3 + 2NaOH ⟶ (b) C2H5COONa + NaOH ⟶ (c) C2H4Br2 + alcoholic KOH ⟶

Define / State: (a) Electronegativity. (b) Gay-Lussac’s law of combining volumes.

Arrange the following according to the instructions given in brackets: (a) C2H2, C3H6, CH4, C2H4 (In the increasing order of the molecular weight) (b) Cu2+, Na+, Zn2+, Ag+ (The order of Preferential discharge at the cathode)

Differentiate between the following pairs based on the criteria given in the brackets: (a) Cane sugar and hydrated copper sulphate [using concentrated H2SO4] (b) Sulphuric acid and hydrochloric acid [type of salts formed]