This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 2 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the output of a XOR gate when both inputs are 1? A) 0. B) 1. C) Undefined. D) Depends on the gate. Show Answer Correct Answer: A) 0. 2. Calculate the dual of Boolean expression (B'+C).A A) (B'.A)+C. B) (B'.C)+A. C) (B'.A)+A. D) (B'.C')+A. Show Answer Correct Answer: B) (B'.C)+A. 3. How can you simplify Boolean expressions? A) Apply calculus methods to simplify expressions. B) Use graphical representations to analyze logic. C) Implement programming techniques for optimization. D) Use Boolean algebra laws and techniques like Karnaugh maps to simplify. Show Answer Correct Answer: D) Use Boolean algebra laws and techniques like Karnaugh maps to simplify. 4. What is the significance of truth tables in Boolean algebra? A) Truth tables are used for weather forecasting. B) Truth tables help in baking recipes. C) Truth tables are essential for car maintenance. D) Truth tables in Boolean algebra are significant as they help in analyzing and simplifying logical expressions, determining the validity of arguments, and designing digital circuits. Show Answer Correct Answer: D) Truth tables in Boolean algebra are significant as they help in analyzing and simplifying logical expressions, determining the validity of arguments, and designing digital circuits. 5. What does a truth table represent? A) A specific problem statement. B) The output of a logic circuit for every possible combination of inputs. C) The design of a logic circuit. D) The physical arrangement of logic gates. Show Answer Correct Answer: B) The output of a logic circuit for every possible combination of inputs. 6. A + ~A = A) A. B) 1. C) 0. D) A purple rock. Show Answer Correct Answer: B) 1. 7. 25!=14 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 8. What does the double negation rule state? A) NOT (NOT A) = A. B) A + A = 1. C) A . 1 = 0. D) A + 0 = 0. Show Answer Correct Answer: A) NOT (NOT A) = A. 9. In Boolean algebra A.A.A.A is equal to A) 1. B) A$^{4}$. C) 4A. D) A. Show Answer Correct Answer: D) A. 10. Which of these is a definition of a transistor A) Microscopic devices that open and close circuits to communicate electrical signals. B) A device used to change a circuit. C) A type of gate used in a CPU. D) Circuit components which take several inputs. Show Answer Correct Answer: A) Microscopic devices that open and close circuits to communicate electrical signals. 11. To perform product of maxterms Boolean function must be brought into A) AND terms. B) OR terms. C) NOT terms. D) NAND terms. Show Answer Correct Answer: B) OR terms. 12. How many rows does a truth table need if there are 2 inputs?(1 mark) A) 4. B) 2. C) 6. D) 8. E) 16. Show Answer Correct Answer: A) 4. 13. Which property:A+B = B+A or A * B = B*A A) Associative. B) Distributive. C) Commutative. D) Bermuda Triangle. Show Answer Correct Answer: C) Commutative. 14. According to Boolean algebra theorems x.x is equal to A) X. B) 1. C) 0. D) X'. Show Answer Correct Answer: A) X. 15. What does De Morgan's first law state? A) NOT (A AND B) = NOT A OR NOT B. B) A AND B = A OR B. C) NOT A = A. D) A OR B = A AND B. Show Answer Correct Answer: A) NOT (A AND B) = NOT A OR NOT B. 16. A + 1 = A) 1. B) 0. C) A. D) A pair of smelly sneakers. E) ~A. Show Answer Correct Answer: A) 1. 17. Boolean algebra is different from ordinary algebra in which way? A) Boolean algebra can represent more than 1 discrete level between 0 and 1. B) Boolean algebra have only 2 discrete levels:0 and 1. C) Boolean algebra can describe up to levels of logic levels. D) They are actually the same. Show Answer Correct Answer: B) Boolean algebra have only 2 discrete levels:0 and 1. 18. Is 15 <= 16? A) True. B) False. C) Not Sure. D) None of the above. Show Answer Correct Answer: A) True. 19. Convert (1011) ..... 2 to decimal: A) 10. B) 11. C) 13. D) 15. Show Answer Correct Answer: C) 13. 20. In the Boolean algebra, a variable has ..... different state(s)/value(s). A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 21. The XOR gate produces ..... when even number of 1's are there in the input combinations. A) 0. B) 1. C) All the above. D) None of the above. Show Answer Correct Answer: A) 0. 22. NOT Gate:If A is Off, B would light up? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. Identify the logic gate that outputs 1 only when all inputs are 1. A) OR. B) AND. C) NOT. D) XOR. Show Answer Correct Answer: B) AND. 24. Describe the significance of the truth table in logic circuits. A) It determines the power consumption of the circuit. B) The truth table is significant in logic circuits as it provides a clear representation of how inputs relate to outputs, aiding in design and analysis. C) It is used to measure the voltage across the circuit. D) It shows the physical layout of the circuit components. Show Answer Correct Answer: B) The truth table is significant in logic circuits as it provides a clear representation of how inputs relate to outputs, aiding in design and analysis. 25. According to Boolean law ((A)')' A) 1. B) A. C) 0. D) A'. Show Answer Correct Answer: B) A. ← 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 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 10Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books