![]() (iii) Copper sulphate solution is electrolysed using copper electrodes. (b) Barium chloride solution is added to a solution of Zinc sulphate. (a) Sodium chloride solution is added to a solution of lead nitrate. (ii) State one observation in the following cases: (b) The most commonly used oxide ore of Aluminium. (a) The ore of Zinc containing its sulphide. (c) Hydrogen chloride gas cannot be collected over water Question 6: (c) State the colour of the precipitate formed when barium chloride is added to the solution of P. (b) Mention one observation when zinc is added to the solution of P. Zinc is added to one part of the solution and to another part of the solution Barium chloride is added. On heating it produces a white anhydrous powder. (iii) Seema takes a blue crystalline salt P in a test tube. (b) Write a balanced chemical equation for the above reaction. ![]() To demonstrate this, she passes ammonia gas over heated copper oxide. (i) (a) Ranjana wants to prove that ammonia is a reducing agent. (c) Balanced equation for the reaction occurring (iv) With respect to Haber’s process answer the following: (a) Action of warm water on Aluminium nitride. (iii) Give balanced equations for each of the following: Find the relative molecular mass of the gas. When the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of hydrogen is 2 g. (ii) A gas cylinder of capacity 40 dm3 is filled with gas X the mass of which is 20 g. (b) Give a balanced equation for the reaction that takes place at the cathode. (a) Name the other aluminum containing compound added to alumina. (i) The following questions relate to the extraction of Aluminium by electrolysis. (b) Calculate the number of moles in 22 grams of carbon dioxide. The compound PQ2 is a good conductor of electricity. In the formation of a compound PQ2, atom P gives one electron to each atom of Q. In an electrovalent compound, the cation attains the electronic configuration of the noble gas that comes after it in the periodic table.Ģ. (iv) (a) State wether the following statements are TRUE or FALSE. (c) State whether X is likely to be placed to the left or to the right of Y in the periodic table? (b) How is the electronegativity of X likely to compare with that of Y? (a) How is the oxidising power of X likely to compare with that of Y? (iii) The electron affinity of an element X is greater than that of element Y. Sulphuric acid reacts with Copper to produce Sulphur dioxide gas. (a) In the preparation of HCl gas when it reacts with Sodium chloride. (ii) What property of Sulphuric acid is exhibited in each of the following cases: Nitric acid reacts with compound Q to give a salt Ca(NO3)2, water and carbon dioxide. (i) Identify the reactant and write the balanced equation for the following: The intended marks for questions or parts of questions are given in brackets SECTION B Chemistry ICSE Specimen Paper Solved 2024 Class-10 Attempt any four questions from Section B. The time given at the head of this Paper is the time allowed for writing the answers.This time is to be spent in reading the question paper.You will not be allowed to write during first 15 minutes.Time allowed: Two and half hours Answers to this Paper must be written on the paper provided separately.(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure modeĮmergency or planned entry into unknown concentrations or IDLH conditions: (APF = 50) Any supplied-air respirator with a full facepiece (APF = 50) Any self-contained breathing apparatus with a full facepiece (APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter (APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode (APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter. ![]() (APF = 25) Any powered, air-purifying respirator with a high-efficiency particulate filter. (APF = 25) Any supplied-air respirator operated in a continuous-flow mode The following filters may also be used: N99, R99, P99, N100, R100, P100.Ĭlick here for information on selection of N, R, or P filters. (APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators.
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