This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is the correct logical expression for sum of a 2-bit binary adder? A) A.Sum S = (A AND B) OR ((NOT A) AND (NOT B)). B) B.Sum S = ((NOT A) AND B) OR (A AND (NOT B)). C) C.Sum S = ((NOT A) OR B) AND (A OR (NOT B)). D) None of the above. Show Answer Correct Answer: B) B.Sum S = ((NOT A) AND B) OR (A AND (NOT B)). 2. Define the AND gate and its truth table. A) Truth Table for NAND Gate:| A | B | Output | | 0 | 0 | 1 | | 0 | 1 | 1 | | 1 | 0 | 1 | | 1 | 1 | 0 |. B) Truth Table for NOT Gate:| A | Output | | 0 | 1 | | 1 | 0 |. C) Truth Table for OR Gate:| A | B | Output | | 0 | 0 | 0 | | 0 | 1 | 1 | | 1 | 0 | 1 | | 1 | 1 | 1 |. D) Truth Table for AND Gate:| A | B | Output || | | || 0 | 0 | 0 || 0 | 1 | 0 || 1 | 0 | 0 || 1 | 1 | 1 |. Show Answer Correct Answer: D) Truth Table for AND Gate:| A | B | Output || | | || 0 | 0 | 0 || 0 | 1 | 0 || 1 | 0 | 0 || 1 | 1 | 1 |. 3. The Boolean algebra is based on the premises that A) Differential equations can be solved by analog circuits. B) There are two states. C) Data can be stored and retrieved. D) None of these. Show Answer Correct Answer: B) There are two states. 4. True or False:NOT gates can only have one input A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. What is the result of 1 + 1 in Boolean Algebra? A) 0. B) 1. C) 2. D) Undefined. Show Answer Correct Answer: B) 1. 6. Which type of logic gate/circuit can store inputs and thereby act as memory? A) NAND. B) NOR. C) D-TYPE Flip Flop. D) Full Adder. Show Answer Correct Answer: C) D-TYPE Flip Flop. 7. The commutative law of multiplication for two variables is written as AB = ..... A) B+A. B) BA. C) B'A. D) BA'. Show Answer Correct Answer: B) BA. 8. Define the XOR gate and its function. A) The XOR gate outputs true if exactly one of its inputs is true. B) The XOR gate outputs true if both inputs are true. C) The XOR gate outputs true if both inputs are false. D) The XOR gate outputs false if at least one input is true. Show Answer Correct Answer: A) The XOR gate outputs true if exactly one of its inputs is true. 9. Evaluate:8 >= 8 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. How many minterms are possible with 4 variables? A) 8. B) 16. C) 32. D) 64. Show Answer Correct Answer: B) 16. 11. What is the result of NOT 1? A) 0. B) 1. C) Undefined. D) A. Show Answer Correct Answer: A) 0. 12. Boolean Multiplication is equivalent to the ..... operation. A) OR. B) AND. C) NOT. D) NAND. Show Answer Correct Answer: B) AND. 13. Which of the following relationships represents the dual of the Boolean property x + x'y = x + y? A) X'(x + y') = x'y'. B) X(x'y) = xy. C) X'(xy') = x'y'. D) X(x' + y) = xy. Show Answer Correct Answer: D) X(x' + y) = xy. 14. Olivia and Nora are planning a picnic. The picnic will only happen if both Olivia and Nora are available. Which logic gate represents this situation, outputting true only when both inputs are true? A) OR gate. B) AND gate. C) NOT gate. D) XOR gate. Show Answer Correct Answer: B) AND gate. 15. Which logic gate outputs 1 only when both inputs are 1? A) AND. B) OR. C) NOT. D) XOR. Show Answer Correct Answer: A) AND. 16. A NOT gate has ..... (1 mark) A) Two inputs and one input. B) One input and one output. C) One input and two outputs. D) Two inputs and two outputs. Show Answer Correct Answer: B) One input and one output. 17. What is the output of an AND gate if its inputs are 1 and 1? A) 1. B) 0. C) All the above. D) None of the above. Show Answer Correct Answer: A) 1. 18. What would the following condition return?20 + 10 * 5 > 70 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 19. The output of a two input AND gate is high when A) Both inputs are low. B) Both inputs are high. C) Any one output is high. D) Only one input is high. Show Answer Correct Answer: B) Both inputs are high. 20. What is the difference between a signed and an unsigned binary number? A) A signed binary number can represent negative and positive values; an unsigned binary number can only represent non-negative values. B) A signed binary number uses more bits than an unsigned number. C) An unsigned binary number can represent both negative and positive values. D) A signed binary number is always larger than an unsigned number. Show Answer Correct Answer: A) A signed binary number can represent negative and positive values; an unsigned binary number can only represent non-negative values. 21. 0 OR 1 A) 0. B) 1. C) All the above. D) None of the above. Show Answer Correct Answer: B) 1. 22. Which of the following is the correct truth table for an AND gate with two inputs (A and B)? A) A = 0, B = 0 $\rightarrow$ Output = 1. B) A = 0, B = 1 $\rightarrow$ Output = 1. C) A = 1, B = 0 $\rightarrow$ Output = 1. D) A = 1, B = 1 $\rightarrow$ Output = 1. Show Answer Correct Answer: D) A = 1, B = 1 $\rightarrow$ Output = 1. 23. What symbol represents the OR gate in text-based Boolean algebra notation? A) A plus symbol. B) A plus symbol with a circle around it. C) A dot. D) A slash. Show Answer Correct Answer: A) A plus symbol. 24. Name the law which states X+Y = Y+X A) Associative Law. B) Indempotence Law. C) Commutative Law. D) Involution Law. Show Answer Correct Answer: C) Commutative Law. 25. Digital Signals have how many defined levels? a. 0 b. 1 c. 2 d. infinite A) . B) . C) . D) . Show Answer Correct Answer: 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 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