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ICSE Class X Prelims 2022 : Chemistry (Ashoka Universal School (AUS), Nashik)

4 pages, 38 questions, 29 questions with responses, 30 total responses,

Rahul Jaiswal
Ashoka Universal School (AUS), Nashik

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Ashoka Group of Ashoka Marg. Academic Session 2021-22 Slip test Paper -2 (10th Feb) Grade X Subject: Chemistry Time: 1 hrs Marks: 40 Section A (40 Marks) (Attempt all the questions from this section) Q.1 Multiple Choice Question [10] i) The formula for cryolite is. a) Na3AIF6 b) Na3AlF6 c) Na2AlF6 d) Na2AlF3 ii) ____ chain isomers can be obtained from the alkane C5H12 a) 2 b) 3 c) 1 d) 4 iii) Acetic acid (CH3COOH) was obtained from ____ a) Vinegar b) Red Ant c) Butter d) Alcohol iv) An Alloy of a metal used in aircraft a) Haematite b) Magnetite c) Bauxite d) Siderite v) An additional substance is added to combine and remove impurities to from usable product called. a) Matrix b) Slag c) Mud d) Flux vi) KI paper changes from colourless to brown in. a) Hydrogen Sulphide b) Ammonia c) Chlorine d) Nitrogen dioxide vii) A gas which is Reddish brown in colour. a) Chlorine b) Hydrogen c) Nitrogen dioxide d) Nitrogen trichloride. viii) A salt of sodium ions burns with flame. a) Brick red b) Golden yellow c) Yellow d) Peacock green ix) The suffix for Saturated hydrocarbon is. a) ane b) ene c) yne d) al x) The general formula for alkene. a) CnH2n 2021-22/G-X/Slip test-2/Chemistry b) CnH2n+2 c) CnH2n-2 d) CnH2n+1 Page 1of 4 Section B (40 Marks) (Attempt any three questions from this Section.) Q.2 a) Mention the role of each during extraction of Aluminium. i) Bauxite [3] ii) Sodium hydroxide iii) Graphite b) Answer the following questions. [3] i) Which solution is used to react with bauxite as first step in obtaining pure aluminium oxide? ii)The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the equation for the reaction. iii) Name the element which serves both as anode and cathode in the extraction of aluminium. c) Write the equation for the reaction that occurs at the cathode during the extraction. electrolysis. [2] of aluminium by d) Write the formula for. [2] i) Cryolite v) Fluorspar Q.3 a) Write the IUPAC name of the following: [5] i) ii) iii) iv) 2021-22/G-X/Slip test-2/Chemistry Page 2of 4 v) b) Copy and complete the following table which refers to the action of heat on [3] Carbonates: Carbonate Colour of residue on cooling Zinc Carbonate Lead Carbonate Copper Carbonate c) Distinguish by a chemical test, [2] i)Sodium chloride and sodium sulphate ii) Sulphuric acid from hydrochloric acid. Q.4a) Write the structures of the following compounds: i) 2, 3-dimethylbutane ii) 2-methylpropane [3] iii) hex-1-ene b) State your observations. i) A SO2 gas pass through the acidified K2Cr2O7. [2] ii) When starch iodide paper introduces in NO2 gas c) Name the gases which: [3] i) Extinguishes burning wooden splinter. ii) Turns moist red litmus blue. iii) Do not affect moist litmus. d) Draw Condensed Formula for the following. iv) Prop-1-yne [2] v) 2-methyl propan-2-ol Q.5 a) State your observation for each of the following reactions. 2021-22/G-X/Slip test-2/Chemistry [5] Page 3of 4 i) When Potassium Parmagnet passed through hydrogen sulphide gas. ii) Dil. Sulphuric acid is added to Barium chloride. iii) Ammonium hydroxide is added to zinc nitrate. iv) Starch iodide paper added to chlorine gas v) Excess of sodium hydroxide solution is added to lead nitrate solution b) Define the following. [3] i) Flux ii) Catenation iii) Homologues c) Write the term for the following. [2] i) An atom radical or bond which defines the structure of organic compounds and confers characteristic properties to it. ii) The earthly impurities present in ore. 2021-22/G-X/Slip test-2/Chemistry Page 4of 4

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