This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. XNOR gate output is HIGH when inputs are A) Different. B) Same. C) All HIGH. D) All LOW. Show Answer Correct Answer: B) Same. 2. A NAND gate is called a universal logic element because A) All digital computers use NAND gates. B) All the minimisation techniques are applicable for optimum NAND gate realisation. C) Everybody use this gate. D) Any logic function can be realized by NAND gates alone. Show Answer Correct Answer: D) Any logic function can be realized by NAND gates alone. 3. Divides a number by another number and returns just the remainder A) MOD. B) DIV. C) EXP. D) INT. E) REM. Show Answer Correct Answer: A) MOD. 4. What is a logic gate and how does it relate to Boolean logic? A) A logic gate is a physical switch that controls electrical flow. B) A logic gate is a type of software used for programming. C) A logic gate is an electronic component that performs Boolean operations on binary inputs. D) A logic gate is a mathematical formula used for calculations. Show Answer Correct Answer: C) A logic gate is an electronic component that performs Boolean operations on binary inputs. 5. In Boolean Algebra, the complement of (A + B)' is: A) A + B. B) A' + B'. C) A'B'. D) Ab. Show Answer Correct Answer: C) A'B'. 6. ( (7<4 || 7>4) ) && ( 6 !=2 ) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. A Half-Adder circuit is ..... (1 Point) A) Half of an AND gate. B) Half of a NAND gate. C) An OR gate and a NOT gate. D) A circuit to add two bits together. Show Answer Correct Answer: D) A circuit to add two bits together. 8. Which of the following is not a Boolean operator? A) AND. B) OR. C) XOR. D) ADD. Show Answer Correct Answer: D) ADD. 9. What would the following condition return?( 20 + 10 ) * 5 > 7 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. Choose the Boolean operator represented by the symbol (+). A) AND. B) OR. C) NOT. D) NAND. Show Answer Correct Answer: B) OR. 11. How many rows will a truth table with 3 inputs have A) 2. B) 4. C) 8. D) 16. Show Answer Correct Answer: C) 8. 12. Evaluate this Boolean expression:I am NOT in Computer Science OR I am NOT in Year 8 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. Which of the following represents the hexadecimal number 'A'? A) 10. B) 11. C) 12. D) 13. Show Answer Correct Answer: A) 10. 14. Which gate requires only one input to be true while the other must be false for the output to be true? A) XOR gate. B) AND gate. C) NOT gate. D) OR gate. Show Answer Correct Answer: A) XOR gate. 15. A rule in Boolean algebra which permits the multiplying or factoring out of an expression A) Distribution. B) Association. C) Commutation. D) Double Negation. Show Answer Correct Answer: A) Distribution. 16. X + XY =? A) X+ Y. B) X. C) Y. D) None. Show Answer Correct Answer: B) X. 17. What does a NOT operation do to a boolean value? A) Changes it to the opposite value. B) Combines it with another value. C) Leaves it unchanged. D) None of the above. Show Answer Correct Answer: A) Changes it to the opposite value. 18. The output of an exclusive-NOR gate is 1, Which input combination is correct? A) A = 1 B = 0. B) A = 0 B = 1. C) A = 0 B = 0. D) None of the above. Show Answer Correct Answer: C) A = 0 B = 0. 19. What is the Boolean value for the statement "True AND False" ? A) True. B) False. C) Undefined. D) Both True and False. Show Answer Correct Answer: B) False. 20. The expression for Absorption law is given by ..... A) A+AB=A. B) A+AB=B. C) AB+AA'=A. D) A+B=B+A. Show Answer Correct Answer: A) A+AB=A. 21. The Demorgan's law (AB)' = ..... A) A'+B'. B) A+B. C) A+B'. D) A'+B. Show Answer Correct Answer: A) A'+B'. 22. Discuss the importance of Boolean algebra in computer science. A) Boolean algebra is only used in mathematics, not computer science. B) Boolean algebra has no practical applications in real-world scenarios. C) Boolean algebra is important in computer science for designing circuits, simplifying expressions, and implementing algorithms. D) Boolean algebra is outdated and no longer relevant in modern technology. Show Answer Correct Answer: C) Boolean algebra is important in computer science for designing circuits, simplifying expressions, and implementing algorithms. 23. A single logic gate is an electronic component made of transistors, which does what? A) Performs calculations such as binary addition. B) Performs binary shifts left and right. C) Combines boolean inputs to produce a boolean output. D) Executes instructions stored in the main memory. Show Answer Correct Answer: C) Combines boolean inputs to produce a boolean output. 24. OR gate output is LOW when A) All inputs HIGH. B) Any input HIGH. C) All inputs LOW. D) One input LOW. Show Answer Correct Answer: C) All inputs LOW. 25. What would the following condition return?8 < 4 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. ← 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