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]

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]

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.

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

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?

K, L and M are beakers containing three different solutions as shown below. Name the beaker which: (a) contains only ions. (b) contains only molecules. (c) has pH less than 7.

Given below is a diagram showing the placement of five different oxides. With respect to the given diagram answer the following questions: (a) Name the type of oxide represented in region X in the diagram. (b) Identify the oxide which has been incorrectly placed in the above diagram. (c) Name the oxide from the above diagram which will form an alkali when dissolved in water.

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

Given below are some chemicals. Lead nitrate, Copper, Hydrochloric acid, Lead oxide, Iron, Sodium carbonate, Copper carbonate, Chlorine Using suitable chemicals from the box given above, write balanced chemical equations for the preparation of the following salts. (Note: The chemicals may be used more than once, if needed.) (a) Lead (II) carbonate (b) Copper (II) chloride (c) Iron (II) chloride

P, Q, R and S are the different methods of preparation of salts. P – Simple displacement Q – Neutralisation by titration R – Precipitation S – Direct combination Choose the most appropriate method to prepare the following salts: (a) PbCl2 (b) FeCl3 (c) Na2SO4