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ICSE Class X Board Exam 2017 : Chemistry

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JEE(Advanced) 2019/Paper-2 FINAL JEE(Advanced) EXAMINATION - 2019 (Held On Monday 27th MAY, 2019) PAPER-2 TEST PAPER WITH ANSWER & SOLUTION PART-2 : CHEMISTRY A LL EN SECTION-1 : (Maximum Marks: 32) This section contains EIGHT (08) questions. Each question has FOUR options. ONE OR MORE THAN ONE of these four option(s) is (are) correct answer(s). For each question, choose the option(s) corresponding to (all) the correct answer(s) Answer to each question will be evaluated according to the following marking scheme: Full Marks : +4 If only (all) the correct option(s) is (are) chosen. Partial Marks : +3 If all the four options are correct but ONLY three options are chosen. Partial Marks : +2 If three or more options are correct but ONLY two options are chosen and both of which are correct. Partial Marks : +1 If two or more options are correct but ONLY one option is chosen and it is a correct option. Zero Marks : 0 If none of the options is chosen (i.e. the question is unanswered). Negative Marks : 1 In all other cases. For example, in a question, if (A), (B) and (D) are the ONLY three options corresponding to correct answers, then choosing ONLY (A), (B) and (D) will get +4 marks; choosing ONLY (A) and (B) will get +2 marks; choosing ONLY (A) and (D) will get +2 marks; choosing ONLY (B) and (D) will get +2 marks; choosing ONLY (A) will get +1 marks; choosing ONLY (B) will get +1 marks; choosing ONLY (D) will get +1 marks; choosing no option (i.e. the question is unanswered) will get 0 marks, and choosing any other combination of options will get 1 mark. 1. The cyanide process of gold extraction involves leaching out gold from its ore with CN in the presence of Q in water to form R. Subsequently, R is treated with T to obtain Au and Z. Choose the correct option(s). (1) T is Zn (2) R is [Au(CN)4] (3) Z is [Zn(CN)4]2 (4) Q is O2 Ans. (1,3,4) JEE(Advanced) 2019/Paper-2/Held on Monday 27 th May, 2019 1

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