(Papers) CISCE : Download Class X Exam Papers-2017 (Computer Science)



(Papers) CISCE : Download Class X Exam Papers-2017 (Computer Science)



Computer Science :

  • Subject : Computer Science
  • Year : 2017
  • Duration : 3 Hour

Instructions :

  1. Answer all questions in Part I (compulsory) and six questions from Part-II, choosing two
  2. questions from Section-A, two from Section-B and two from Section-C .
  3. All working, including rough work, should be done on the same sheet as the rest of the answer.
  4. The intended marks for questions or parts of questions are given in brackets [ ].

(a) State the law represented by the following proposition and prove it with the help of a truth table:  [1]
P V P = P
(b) State the Principle of Duality. [1]
(c) Find the complement of the following Boolean expression using De Morgan’s law: [1]
F(a,b,c) = (bʹ + c) + a
(d) Draw the logic diagram and truth table for a 2 input XNOR gate. [1]
(e) If (~P => Q) then write its: [1]
(i) Inverse
(ii) Converse

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