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ICSE Class X Sample / Model Paper 2023 : Chemistry

6 pages, 3 questions, 0 questions with responses, 0 total responses,

Arabinda Kumar Das
St. Xavier's Institution (SXI), Panihati, Kolkata

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STEWART SCHOOL, BHUBANESWAR SCREENING EXAMINATION - 2023-24 CHEMISTRY Maximum Marks :80 Time allowed : Two hours Answers to this paper must be written on the paper provided separately. You will not be allowed to write during first 15 minutes. This time is to be spent in reading the question paper. The time given at the head of this Paper is the time allowed for writing the answers. Section A is compulsory, Attempt any four questions from Section B. The intended marks for questions or parts of questions are given in brackets [ ] SECTION - A (Attempt all questions from this section) Question.1. Choose the correct answers to the questions from the given options. (i) Among the period 3 elements, the element which has high electron affinity is (a) sodium (ii) [ 15 ] (b) chlorine (c) fluorine (d) Argon The ratio between the number of molecules in 2gm of hydrogen and 32gm of oxygen is (a) 1 : 2 (iii) (c) 1 : 01 (d) 1.01 : 1 (c) ZnO (d) Nacl Which of the following is not a base? (a) KOH (iv) (b) 1 : 1 (b) Al (OH ) 3 One molecule of aluminium hydroxide will require how many molecules of dil.HCl for complete neutralization. (a) 1 (v) (vi) (vii) (b) 2 (c) 3 (d) 4 Which of the following elements will form acidic oxide? (a) sodium (b) magnesium (c) sulphur (d) None of these Which of the following increases along the period? (a) Number of valence electrons. (b) Atomic size (c) Electropositive character (d) all of these The molecular mass of a compound is 88 amu having empirical formula of C 2 H 4 O . Its molecular formula will be (a) C2H4O2 (b) C4H8O2 (c) C8H4O2 (d) C2H8O2 Page | 1

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