This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Principle of Duality in Boolean Algebra states that startingwith a boolean relation, another Booleanrelation can be derived by: A) Changing each OR sign (+) to an AND sign (.). B) Changing each AND sign (.) to an OR sign (+). C) Replacing each 1 by a 0 and each 0 by a 1e.g., 0 + 1= 1 Dual 1 . 0 = 0. D) All the these. Show Answer Correct Answer: D) All the these. 2. Universal gates are A) AND, OR. B) NAND, NOR. C) XOR, XNOR. D) NOT only. Show Answer Correct Answer: B) NAND, NOR. 3. Decide if the boolean expression evaluates to true or false. Given:a = 1, b = 0, c = 3(a * c) != b A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. If 3-input OR gate has 8 input possibilities how many possibilities will result in HIGH output? A) 1. B) 7. C) 2. D) 8. Show Answer Correct Answer: B) 7. 5. What does the complement operation do in Boolean Algebra? A) Inverts the value. B) Adds two values. C) Multiplies two values. D) None of the above. Show Answer Correct Answer: A) Inverts the value. 6. Evaluate this Boolean expression:I am in Computer Science AND I am in Year 8 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. What is the truth table output for an AND gate when A=0 and B=1? A) 1. B) 0. C) Undefined. D) A. Show Answer Correct Answer: B) 0. 8. Zaria and Carl are making a game and to go to the next level a player must have >=1000 gold coins. The player only has 900 gold coins and cannot advance until they gather 100 more gold golds. What kind of Boolean Operator has been coded? A) Comparative Boolean. B) Checks for a specific condition. C) Conditional Boolean. D) Logical Operations. Show Answer Correct Answer: C) Conditional Boolean. 9. In computers, the "on" and "off" states correlate to ..... A) If the computer is on or off. B) If the internet is connected to WiFi. C) If electricity is flowing or not. D) If one computer is able to talk to another computer. Show Answer Correct Answer: C) If electricity is flowing or not. 10. Recognize the truth table output pattern of an AND gate. A) 0, 0, 0, 1. B) 1, 0, 0, 1. C) 1, 1, 0, 0. D) 0, 1, 1, 1. Show Answer Correct Answer: A) 0, 0, 0, 1. 11. Evaluate this Boolean expression:I am in the Library AND It is night time A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. The number of min terms for an expression comprising of 3 variables? A) 8. B) 3. C) 0. D) 1. Show Answer Correct Answer: A) 8. 13. 5 * 7 > 35 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 14. Write the dual of 1 + 1 = 1 A) 1.1 = 1. B) 0 . 0 = 0. C) 0 + 0 = 0. D) 1 . 1 =1. Show Answer Correct Answer: B) 0 . 0 = 0. 15. We generally use A, B, C, D for inputs, but start from P for the first gate. This is because P stands for ..... A) Process. B) Program. C) Possibility. D) Procedure. Show Answer Correct Answer: A) Process. 16. Boolean algebra is primarily used in: A) Arithmetic computation. B) Programming languages. C) Digital circuits. D) Statistical analysis. Show Answer Correct Answer: C) Digital circuits. 17. Which Boolean operator is built from two transistors in parallel? A) NOT. B) AND. C) OR. D) IF. Show Answer Correct Answer: C) OR. 18. 7 + 3 == 10 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. The name of the book written by George Boole and published in 1854 A) The Laws of Logic. B) The Laws of Thought. C) The Laws of Reasoning. D) The Laws of Maths. Show Answer Correct Answer: B) The Laws of Thought. 20. What are the main components of a number system? A) Digits, base (radix), and arithmetic rules. B) Symbols, value (magnitude), and logical operations. C) Numbers, structure (format), and conversion rules. D) Characters, system (format), and computational methods. Show Answer Correct Answer: A) Digits, base (radix), and arithmetic rules. 21. In Hexadecimal number system, D represents ..... A) 13. B) 11. C) 14. D) 12. Show Answer Correct Answer: A) 13. 22. How many different combinations of 1 and 0 are possible with 2 bits? A) 2. B) 4. C) 6. D) 8. Show Answer Correct Answer: B) 4. 23. What is the possible Binary combination of inputs for a 5 input combinational circuit? A) 10. B) 32. C) 28. D) 5. Show Answer Correct Answer: B) 32. 24. >= 395 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 25. What is the main advantage of using a Karnaugh Map? A) It simplifies Boolean expressions systematically. B) It increases the number of logic gates needed. C) It converts logic gates into flip-flops. D) It performs binary addition automatically. Show Answer Correct Answer: A) It simplifies Boolean expressions systematically. ← 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