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CBSE Class 12 Pre Board 2021 : Informatics Practices - with ANSWERS / MARKING SCHEME (Kendriya Vidyalaya (KV), Kanpur Cantt)

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KENDRIYA VIDYALAYA KANPUR CANTT Pre- Board Examination-I (2020-2021) Class- XII Subject- Informatics Practices Time Allowed: 3 Hours Maximum Marks: 70 General Instructions: 1. This question paper contains two parts A and B. Each part is compulsory. 2. Both Part A and Part N 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 3 sections: a. Section-I is short answer questions of 2 marks each in which two questions 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. Q.No Marks Allocated PART -A SECTION-I Select the most appropriate option out of the options for each question. Attempt any 15 questions from question no 1 to 21. 1 2 3 4 5 6 7 Which of these is not a communication channel? (i) Satellite (ii) Microwave (iii) Radio wave 1 (iv) Wi-Fi Which of the following methods should be used in the code to display a graph? (i) Show() (ii) display() (iii) execute() (iv) plot() Write the output of the following SQL command. SELECT TRUNCATE(345.79) (i) 345.79 (ii) 345.0 (iii) 346 (iv) 345.8 Axes of a plot can be labelled using _____ and ______ functions. In a dataframe, axis-0 is for (i) columns (ii) rows (iii) rows and columns both (iv) None of these Which function is used to rename the existing column or index? (i) std() (ii) hist() (iii) groupby() (iv) rename() The term Intellectual Property Rights covers: (i) Copyrights (ii) Trademarks (iii) Patents (iv) All of these 1 1 1 1 1 1

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