Tiêu đề ISC CLASS XII CHEMISTRY SPECIMEN QUESTION PAPER 2026.pdf ✅

---------------------------------------------------------------------------------------------------------------- ISC (CLASS XII) SPECIMEN QUESTION PAPER 2026 1 CHEMISTRY PAPER 1 (THEORY) Maximum Marks: 70 Time Allotted: Three Hours Reading Time: Additional Fifteen Minutes Instructions to Candidates 1. You are allowed an additional fifteen minutes for only reading the question paper. 2. You must NOT start writing during the reading time. 3. This question paper has 9 printed pages. 4. It is divided into four sections and has twenty one questions in all. 5. Answer all questions. 6. Section A has fourteen subparts. Each question carries 1 mark. 7. While attempting Multiple Choice Questions in Section A, you are required to write only ONE option as the answer. 8. Section B has ten questions. Each question carries 2 marks. 9. Section C has seven questions. Each question carries 3 marks. 10. Section D has three questions. Each question carries 5 marks. 11. Internal choices have been provided in one question each in Sections B, C and D. 12. The intended marks for questions are given in brackets [ ]. 13. All working, including rough work, should be done on the same sheet as, and adjacent to the rest of the answer. 14. Balanced equations must be given wherever possible and diagrams where they are helpful. 15. When solving numerical problems, all essential workings must be shown. 16. In working out problems, use the following data: Gas constant R=1·987cal deg-1mol-1=8·314JK-1mol-1 =0·0821dm3atmK-1mol-1 , 1 l atm =1dm3atm=101·3 J. 1 Faraday=96500 coulombs. Avogadro’s number= 6·023×1023 . Instruction to Supervising Examiner 1. Kindly read aloud the Instructions given above to all the candidates present in the examination hall.

---------------------------------------------------------------------------------------------------------------- ISC (CLASS XII) SPECIMEN QUESTION PAPER 2026 3 (a) Only (Q) and (S) are correct. (b) Only (P) and (S) are correct. (c) Only (P) and (Q) are correct. (d) Only (P) and (R) are correct. (iii) When Chlorobenzene is heated with aq. ammonia in the presence of Cu2O at high pressure, it gives: (Recall) (a) aniline. (b) phenyl isocyanide. (c) diphenyl. (d) diphenylamine. (iv) Hydrolysis of sucrose is called: (Recall) (a) esterification. (b) saponification. (c) hydration. (d) inversion. (v) An organic compound with molecular formula C3H6O does not give silver mirror test with Tollen’s reagent but gives an oxime with hydroxylamine. The compound is: (Understanding) (a) CH3CH2CHO (b) CH3-CO-CH3 (c) CH2=CH-CH2OH (d) CH2=CH-O-CH3 (vi) Given below are two statements marked Assertion and Reason. Read the two statements carefully and select the correct option. (Analysis) Assertion: 0∙1 M sucrose solution has higher depression in the freezing point than 0∙1 M urea solution. Reason: Depression in freezing point is not a colligative property. (a) Both Assertion and Reason are true and Reason is the correct explanation for Assertion. (b) Both Assertion and Reason are true but Reason is not the correct explanation for Assertion. (c) Assertion is true and Reason is false. (d) Both Assertion and Reason are false.