This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following expression is dual of A) (AB + CD) = (A + C) (A + D) (B + C) (B + D). B) (AC + BD) = (A + C) (A + D) (B + C) (B + D). C) (AB + CD) = (A + B) (A + D) (B + C) (C + D). D) (AD + BC) = (A + B) (A + C) (B + C) (B + D). Show Answer Correct Answer: A) (AB + CD) = (A + C) (A + D) (B + C) (B + D). 2. A + (B * A) = A) A. B) ~A. C) B. D) 1. E) Your mama. Show Answer Correct Answer: A) A. 3. The Given IC numbers 7404, 7400, 7432 are ..... gates respectively. A) NAND, AND, NOT. B) NOT, NAND, OR. C) NOT, NAND, AND. D) NOR, EXOR, NOT. Show Answer Correct Answer: B) NOT, NAND, OR. 4. Is 25 < 32? A) True. B) False. C) Not Sure. D) None of the above. Show Answer Correct Answer: A) True. 5. State the number of possible combinations for a Boolean expression with 3 variables. A) 4. B) 6. C) 8. D) 16. Show Answer Correct Answer: C) 8. 6. ( A + B ) ( C + D ) is the same as A) AC + BD. B) (A . B ) + ( C . D ). C) A + B + C + D. D) AC + AD + BC + BD. Show Answer Correct Answer: D) AC + AD + BC + BD. 7. NOT 0 A) 0. B) 1. C) All the above. D) None of the above. Show Answer Correct Answer: B) 1. 8. A logic table for NOT that has an input of TRUE will show an output for ..... A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 9. Which logic gate outputs true only if both inputs are true? A) AND gate. B) OR gate. C) NOT gate. D) XOR gate. Show Answer Correct Answer: A) AND gate. 10. What is the primary purpose of a truth table? A) To list all possible values of a Boolean expression. B) To solve mathematical equations. C) To organise data in a database. D) To create a computer program. Show Answer Correct Answer: A) To list all possible values of a Boolean expression. 11. The associative law of addition for three variables is written as A + (B + C) = ..... A) (A + B) + C. B) A + (BC). C) (AB) + C. D) (AB) C. Show Answer Correct Answer: A) (A + B) + C. 12. Which of the following are boolean constants? A) Yes. B) NO. C) 1. D) ALL OF THESE. Show Answer Correct Answer: D) ALL OF THESE. 13. A logic circuit has 4 inputs. How many output combinations are possible? A) 8. B) 16. C) 32. D) 4. Show Answer Correct Answer: B) 16. 14. What is the output of the following Python code?x = 10y = 50if (x ** 2 > 100 and y < 100):print(x, y) A) 100 500. B) 10 50. C) 1 5. D) None. Show Answer Correct Answer: D) None. 15. Which of the these is NOT a fundamental operation in Boolean algebra? A) NOT. B) AND. C) OR. D) YET. Show Answer Correct Answer: D) YET. 16. The result of A complement plus 1 is equal to A) A. B) A complement. C) 1. D) 0. Show Answer Correct Answer: C) 1. 17. Give dual for the following:-(A+0).(A.1.A') A) (A+1).(A.0.A'). B) (A.1)+(A+0+.A'). C) (A'.1)+(A+0+.A'). D) (A.0)+(A+1+.A'). Show Answer Correct Answer: B) (A.1)+(A+0+.A'). 18. What is the primary reason for using binary in computers? A) It's easier to understand. B) It allows for more data storage. C) It minimizes signal issues. D) It's faster than other systems. Show Answer Correct Answer: C) It minimizes signal issues. 19. The correct way to check if age is between 20 and 30 is ..... A) Age>=20 and age<=30. B) Age>=20 and <=30. C) Age<=20 and age<=30. D) Age<=20 and age>=30. E) Age<=20 and >=30. Show Answer Correct Answer: A) Age>=20 and age<=30. 20. Boolean algebra expressions are simplified because ..... A) Circuits are then cheaper to build. B) Circuits are more logically correct. C) More gates are used. D) None of the above. Show Answer Correct Answer: A) Circuits are then cheaper to build. 21. Which logic gate outputs 1 when at least one input is 1? A) AND. B) OR. C) NOT. D) XOR. Show Answer Correct Answer: B) OR. 22. Evaluate this Boolean statement:This sentence has seven words in it. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. Name the procedure "Break the line, change the sign" A) Demorgan's law. B) Duality principle. C) Demorganization. D) Fallact. Show Answer Correct Answer: C) Demorganization. 24. !false && false A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 25. Evaluate this Boolean expression:I am in Computer Science AND I am in Year 9 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← PreviousNext →Related QuizzesClass 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 1Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 2Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 3Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 4Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 5Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 6Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 7Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 8Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 10Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books