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GSEB HSC JULY 2009 : Chemistry

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0 52(E) (JULY, 2009) [Maximum Marks : 100 Time : 3.00 Hours] General Instructions : (1) There are total 60 questions and all are compulsory. (2) Begin new section strictly on new page and maintain order of answers. (3) Write your answers to the required points as instructed in questions. (4) Use log table or simple calculator for calculation. (5) Constants : h = 6.626 x 10-27 erg-sec. R = 1.987 Calorie /mole R = 0.082 lit. atm. SECTION - A Questions from 1 to 16 are multiple choice type. Each question carries 1 mark. Select the correct answer from the following. 16 1. The molecular orbital energy level given below is applicable for which of the following? als < a * 1s< a2s < a * 2s < a2pz < 7t2px = n2py < n*2p,, = n*2pz <a*2pz (A) B2 (B) C2 (C) N2 (D) 02 2. Which one of the following oxide is semi -conductor ? (A) TiO (B) Ti203 (C) Ti02 (D) Re03 052(E) [17] P.T.O.

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Additional Info : Gujarat Secondary Education Board (GSEB) Higher Secondary Certificate (HSC) - Science Stream - English Medium
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