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CBSE Class 12 Pre Board 2021 : Computer Science - Set 1 (CBSE Gulf Sahodaya Qatar Chapter, Doha)

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PreBoard1, 2020-21 Computer Science (083) Class XII Date: 3rd, Max. Marks: 70 Time Allowed: 3 hours December2020 General Instructions: 1. This question paper contains two parts A and B. Each part is compulsory. 2. Both Part A and Part B have choices. 3. Part-A has 2 sections: a. Section I is short answer questions, to be answered in one word or one line. b. Section II has two case studies questions. Each case study has 4 case-based sub-parts. An examinee is to attempt any 4 out of the 5 subparts. 4. Part - B is Descriptive Paper. 5. Part- B has three sections a. Section-I is short answer questions of 2 marks each in which two question have internal options. b. Section-II is long answer questions of 3 marks each in which two questions have internal options. c. Section-III is very long answer questions of 5 marks each in which one question has internal option. 6. All programming questions are to be answered using Python Language only Part-A Question No. Marks allocated Section-I Select the most appropriate option out of the options given for each question. Attempt any 15 questions from question no 1 to 21. 1. Find the valid identifier/s from the following: 1 a) MySum b) true c) Last@sum d) 123Sum 2. Given the lists L= [1, 3, 6, 82, 5, 7, 11, 92], write the output of 1 print(L[2:5]) print(L[-2:-8:-2]) 3. ______________________statement is given for importing comma separated module into your program. 1 4. Identify the valid identity operator/s in Python from the following. 1

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