This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Divides a number by another number and returns just the whole number A) DIV. B) MOD. C) EXP. D) INT. E) REM. Show Answer Correct Answer: A) DIV. 2. Rule in Boolean Algebra where if you invert a term twice it is equal to its original term. E.G (NOT NOT A) = A A) Distribution. B) Association. C) Commutation. D) Double Negation. Show Answer Correct Answer: D) Double Negation. 3. When computer engineers are designing processors, they ..... work at the transistor level. A) Always. B) Never. C) Sometimes. D) Rarely. Show Answer Correct Answer: D) Rarely. 4. Apply Demorgan's theorem to simplify the following expression:[(A+B)+C]' A) ABC. B) A'+B+C. C) A+B+C. D) A'B'C'. Show Answer Correct Answer: D) A'B'C'. 5. The only time an XOR is true is when ..... A) Both inputs are false. B) Both inputs are true. C) One input is true and the other input is false. D) The output is grounded. Show Answer Correct Answer: C) One input is true and the other input is false. 6. Which has the highest order of precedence:AND, OR or NOT? A) NOT. B) AND. C) OR. D) XOR. E) NOR. Show Answer Correct Answer: A) NOT. 7. Which of the following represents the Idempotent Law? A) A + A = A. B) A + 1 = 1. C) A 0 = 0. D) A 1 = A. Show Answer Correct Answer: A) A + A = A. 8. Another way to represent ON or TRUE A) 1. B) 0. C) All the above. D) None of the above. Show Answer Correct Answer: A) 1. 9. Which of the following represents the complement of the function X + YZ A) X'(Y+Z)'. B) X'Y' +Z'. C) X'(Y'+Z'). D) X' + Y'Z'. Show Answer Correct Answer: C) X'(Y'+Z'). 10. Three managers have a key of a safe with them, and it requires any two keys to open the safe. If A, B and C denote the presence of the three managers respectively in front of the safe, write down the switching expression denoting the condition for opening the safe? A) A.B + B.C + C.A. B) (A + B + C) . (A' + B' + C'). C) (A + B + C) + B.C + C.A + A.B.C. D) All of these. Show Answer Correct Answer: A) A.B + B.C + C.A. 11. The process of combining adjacent 1's in K-map is known as: A) Encoding. B) Grouping. C) All the above. D) None of the above. Show Answer Correct Answer: B) Grouping. 12. 6) Which among the below stated boolean expressions do not obey De-Morgan's theorem? A) X+Y = X . Y. B) X.Y = X + Y. C) X.Y = X.Y. D) None of the above. Show Answer Correct Answer: C) X.Y = X.Y. 13. According to the associative law: A) A+B=B+A. B) A=A+A. C) (A+B)+C=A+(B+C). D) A+0=A. Show Answer Correct Answer: C) (A+B)+C=A+(B+C). 14. De Morgan's Theorem:(AB)' =? A) A + B. B) A' + B'. C) A' + B'. D) A'B'. Show Answer Correct Answer: B) A' + B'. 15. The two variables age and day are initialized with the values shown. age < ..... 16 day < ..... "Tuesday" Choose the compound conditional that evaluates to true. A) (age > 10) AND (age < 15). B) NOT (age > 10). C) (day = "Tuesday") OR (age < 12). D) NOT ( (age = 16) OR (day = "Tuesday") ). Show Answer Correct Answer: C) (day = "Tuesday") OR (age < 12). 16. A + 0 =? A) 0. B) 1. C) A. D) None of these. Show Answer Correct Answer: C) A. 17. The associative law of multiplication for three variables is written as A (BC) = ..... A) (A + B) + C. B) A + (BC). C) (AB) + C. D) (AB) C. Show Answer Correct Answer: B) A + (BC). 18. The expression (AB)'+(BC)' can also be written as A) A+B+C. B) (A'BC)'. C) (ABC)'. D) None. Show Answer Correct Answer: C) (ABC)'. 19. What is the output of an XOR gate when both inputs are the same? A) 0. B) 1. C) It depends on the number of inputs. D) Undefined. Show Answer Correct Answer: A) 0. 20. Why is abstraction important in computer engineering? A) It simplifies the design process. B) It reduces the cost of components. C) It increases the speed of development. D) All of the above. Show Answer Correct Answer: A) It simplifies the design process. 21. Select the correct meaning of the symbol in Boolean algebra. A) OR operation. B) AND operation. C) NOT operation. D) XOR operation. Show Answer Correct Answer: B) AND operation. 22. How many input and output required for multiplexer? A) Many input and one output. B) One input and many output. C) One input and one output. D) None of the above. Show Answer Correct Answer: A) Many input and one output. 23. What would the following condition return?5 > 2 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. Identify the logic gate that produces the complement of its input. A) OR. B) NOR. C) NOT. D) NAND. Show Answer Correct Answer: C) NOT. 25. NOR function is dual of A) AND function. B) OR function. C) XOR function. D) NAND function. Show Answer Correct Answer: D) NAND function. ← 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 9Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books