This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In a positive logic circuit A) Logic 0 and 1 represented by 0v (ground) and positive voltage (+VCC respectively ). B) Logic 0 and 1 represented by negative and positive voltages respectively. C) Logic 0 voltage level is higher than logic 1 voltage level. D) Logic 0 voltage level is lower than logic 1 voltage level. Show Answer Correct Answer: A) Logic 0 and 1 represented by 0v (ground) and positive voltage (+VCC respectively ). 2. Define the output of a NOT gate when input is 0. A) 0. B) 1. C) 2. D) Undefined. Show Answer Correct Answer: B) 1. 3. State the Boolean law that says A + 0 = A. A) Identity Law. B) Null Law. C) Domination Law. D) Idempotent Law. Show Answer Correct Answer: A) Identity Law. 4. What is a Boolean Operator? A) A value that contains a condition. B) A value that contains a number. C) A value that contains a string. D) A value that contains a boolean. Show Answer Correct Answer: A) A value that contains a condition. 5. Construct a truth table for the expression A AND B. A) A OR B truth table:. B) A AND B truth table:A | B | A AND BT | T | TT | F | FF | T | FF | F | F. C) A NAND B truth table:. D) A AND NOT B truth table:. Show Answer Correct Answer: B) A AND B truth table:A | B | A AND BT | T | TT | F | FF | T | FF | F | F. 6. Harper is learning about how computers store information. Which of the following best describes the binary system that Harper is studying? A) Uses ten digits. B) Uses two digits, 0 and 1. C) Uses letters only. D) Uses eight digits. Show Answer Correct Answer: B) Uses two digits, 0 and 1. 7. What is the output of the following boolean expression in Java:!(4 == 4)? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 8. A logic state can only be ..... A) On or 1. B) Off or 1. C) 1 or 0. D) In and Out. Show Answer Correct Answer: C) 1 or 0. 9. As Zoe begins to learn about how computers work, she starts by understanding the basic electrical signals. As she moves up to learning about programming languages and software, what concept does she leave behind as she journeys up the ladder of abstraction? A) Complexity. B) Simplicity. C) Binary representation. D) Boolean Algebra. Show Answer Correct Answer: A) Complexity. 10. 0 AND 1 A) 0. B) 1. C) All the above. D) None of the above. Show Answer Correct Answer: A) 0. 11. In what types of coding structures are Boolean Operators used? A) Repetition and selection. B) Sequential. C) Looping and repetition. D) Sequential and repetition. Show Answer Correct Answer: A) Repetition and selection. 12. Which number represents True? A) 1. B) 5. C) 10. D) 100. Show Answer Correct Answer: A) 1. 13. What is the dual of the operation A.B+A.C? A) A.C+A.B. B) 2A.B + 2A.C. C) A+B.A+C. D) None of the above. Show Answer Correct Answer: C) A+B.A+C. 14. Boolean variables have values A) 0, 1. B) 1, 2. C) -1, 0. D) Any integer. Show Answer Correct Answer: A) 0, 1. 15. NOR gate is A) AND + NOT. B) OR + NOT. C) XOR + NOT. D) XNOR + NOT. Show Answer Correct Answer: B) OR + NOT. 16. Which of the following is NOT a basic logic gate? A) AND. B) OR. C) NOT. D) XNOR. Show Answer Correct Answer: D) XNOR. 17. Evaluate:9 < 7 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. The NOT gate is also known as a: A) Buffer. B) Inverter. C) Repeater. D) Adder. Show Answer Correct Answer: B) Inverter. 19. A nibble contains ..... bits. A) 8. B) 4. C) 2. D) 3. Show Answer Correct Answer: B) 4. 20. What is a logic circuit? A) A.Combination of logic gates that performs a specific function. B) B.Combination of logic gates that understands both binary and decimal number systems. C) C.Combination of logic gates that understands decimal number system. D) None of the above. Show Answer Correct Answer: A) A.Combination of logic gates that performs a specific function. 21. The Boolean expression (A + B)'.(A'+ B')' simplifies to A) A. B) B. C) 0. D) 1. Show Answer Correct Answer: C) 0. 22. Select the number which cannot be base 10 A) 3214. B) 1234. C) 147A7. D) 4321. Show Answer Correct Answer: C) 147A7. 23. Evaluate this Boolean expression:I am in Year 8 OR I am in Year 7 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. What is the main function of an adder circuit? A) To perform multiplication. B) To perform subtraction. C) To perform addition of binary numbers. D) To compare two binary numbers. Show Answer Correct Answer: C) To perform addition of binary numbers. 25. Evaluate:5 > 2 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 9Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books