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ICSE Class X Prelims 2023 : Chemistry (Karnataka ICSE Schools Association KISA, Bengaluru)

6 pages, 38 questions, 38 questions with responses, 59 total responses,

Aditya ghosh
Ryan International School (RIS), Kundalahalli, Bangalore

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1 KARNATAKA ICSE SCHOOLS ASSOCIATION Std. X - PREPARATORY EXAMINATION 2023 SUBJECT : CHEMISTRY ------------------------------------------------------------------------------------------------------------Maximum Marks : 80 Time : 2 hours Answers to this paper must be written on the answer sheet provided separately. Attempt all questions from Section A and any four questions from Section B. All working, including rough work, must be clearly shown and must be done on the same sheet as the rest of the answer. Omission of essential working will result in the loss of marks. The intended marks for questions or parts of questions are given in brackets [ ]. ------------------------------------------------------------------------------------------------------------- SECTION A (40 marks) (Attempt all questions from this section) Question 1. Choose the correct answer from the options given below: [15] (i) Elements belonging to the same group have similar chemical properties, because a) they have similar electronic configuration in valence shell. b) their atomic numbers increase as we move down a group c) they are all metallic or nonmetallic elements. d) their number of electrons increase steadily. (ii) A salt which in solution gives a bluish white precipitate with NaOH solution and a white precipitate with BaCl2 solution is: a) CuCl2 b) FeSO4 c) CuSO4 d) Fe2(SO4)3 (iii) During the electrolysis of acidified water using inert electrode, which of the following takes place: a) Oxygen is released at Cathode b) Oxygen is released at anode c) Hydrogen is released at anode d) Sulphur dioxide is released at anode. (iv) Formation of chloroform from methane and chlorine is an example of: a) Addition b) Dehydration c) Substitution d) Elimination

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Additional Info : ICSE Class X Sample / Model Paper 2024 : Chemistry
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