The indicator which changes to pink colour in an alkaline solution is: (a) Blue Litmus (b) Methyl Orange (c) Red Litmus (d) Phenolphthalein

Salts can be prepared by the action of dilute acid on: 1. bases 2. carbonates 3. metals 4. sulphites The method which cannot be used for the preparation of copper salts is: (a) 1 (b) 2 (c) 3 (d) 4

The metal hydroxide which reacts with both acids and alkalis to form salt and water is: (a) Calcium hydroxide (b) Magnesium hydroxide (c) Aluminium hydroxide (d) Ferric hydroxide

Fill in the blanks with the choices given in the brackets: (a) Metals are good ............... [oxidizing agents /reducing agents] (b) Non-polar covalent compounds are ............... [good / bad] conductors of heat and electricity. (c) Higher the pH value of a solution, the more is ............... [acidic / alkaline] it is. (d) ............... [Silver chloride / Lead chloride] is a white precipitate that is soluble in excess of Ammonium hydroxide solution. (e) Conversion of ethene to ethane is an example of ............... . [hydration / hydrogenation]

Convert the following reactions into a balanced chemical equation: (a) Ammonia to nitric oxide using oxygen and platinum catalyst. (b) Sodium hydroxide to sodium sulphate using sulphuric acid. (c) Ferrous sulphide to hydrogen sulphide using hydrochloric acid.

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]

State the terms/process for the following: (a) The energy released when an atom in the gaseous state accepts an electron to form an anion. (b) Tendency of an element to form chains of identical atoms. (c) The name of the process by which Ammonia is manufactured on a large scale. (d) A type of salt formed by partial replacement of hydroxyl radicals with an acid radical. (e) 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.

Which pair of reactants can be best used to produce lead (II) sulphate? (a) Sulphuric acid + Lead (b) Sulphuric acid + Lead hydroxide (c) Sodium sulphate + Lead nitrate (d) Potassium sulphate + Lead oxide

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

State whether the following statements are True or False: (a) Organic compounds having different molecular formula, but same structural formula are called isomers. (b) A salt is a compound formed by partial or complete replacement of the hydrogen ion of an acid by a metal or electropositive ion.

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)