This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Computer Science > Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Computer Science Chapter 6 Boolean Algebra And Logic Gates Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a truth table? A) A.A table that denotes the different outputs of the logic gates or circuit with respect to different inputs. B) B.A table that represents how logic gates are combined to form a logic circuit. C) C.A table that shows the input combinations that result in a binary output 1 in a logic gate. D) None of the above. Show Answer Correct Answer: A) A.A table that denotes the different outputs of the logic gates or circuit with respect to different inputs. 2. The book of George Boole was an effort to represent logic and reasoning as mathematical operations. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. Simplification of the Boolean expression (A + B)'(C + D + E)' + (A + B)' yields which of the following results? A) A + B. B) C'D'E'. C) C + D + E. D) A'B'. Show Answer Correct Answer: D) A'B'. 4. An inverter gates can be developed using A) Two diodes. B) A resistance and capacitance. C) A transistor. D) An inductance and capacitor. Show Answer Correct Answer: C) A transistor. 5. X . ( Y . Z )is the same as A) ( X . Z ) + Y. B) ( X . Y ) . Z. C) ( X + Y ) + Z. D) X . Y + Z. Show Answer Correct Answer: B) ( X . Y ) . Z. 6. A * (B + C) = A* B + A * C A) Associative Property. B) No one's property. C) Distributive Property. D) Commutative Property. Show Answer Correct Answer: C) Distributive Property. 7. In Boolean Algebra A + A + A + A =? A) A. B) 4A. C) 2A. D) None. Show Answer Correct Answer: A) A. 8. X+x'=? Is equal to A) X'. B) 0. C) 1. D) X. Show Answer Correct Answer: C) 1. 9. What kind of 'base' system is binary known as? A) Base 16. B) Base 10. C) Base 2. D) None of the above. Show Answer Correct Answer: C) Base 2. 10. What does the distributive law in Boolean algebra state? A) A + AB = B. B) A + A = 1. C) A + A = 0. D) A(B + C) = AB + AC. Show Answer Correct Answer: D) A(B + C) = AB + AC. 11. What is a truth table and how is it used in Boolean logic? A) A truth table is a method for solving equations in algebra. B) A truth table is a graphical representation of data flow in circuits. C) A truth table is a tool that shows all possible values of logical expressions and their outputs in Boolean logic. D) A truth table is a list of all possible programming languages. Show Answer Correct Answer: C) A truth table is a tool that shows all possible values of logical expressions and their outputs in Boolean logic. 12. (A + B')' is also equals to A) AB. B) A'B. C) A B'. D) None. Show Answer Correct Answer: B) A'B. 13. A unit which addes together two inputs A) Half Adder. B) Full Adder. C) All the above. D) None of the above. Show Answer Correct Answer: A) Half Adder. 14. The Boolean expression A + AB simplifies to: A) AB. B) B. C) A. D) A + B. Show Answer Correct Answer: C) A. 15. If A = True and B = False, what is the result of A OR B? A) True. B) False. C) Undefined. D) 0. Show Answer Correct Answer: A) True. 16. What are the three boolean operations in Boolean Algebra? A) NOT, AND and XOR. B) NOT, AND and OR. C) ADDITION, SUBTRACTION AND MULTIPLICATION. D) X, Y AND Z. Show Answer Correct Answer: B) NOT, AND and OR. 17. Which Boolean operation is equivalent to adding two binary digits? A) AND. B) OR. C) XOR. D) NOT. Show Answer Correct Answer: C) XOR. 18. A Half Subtractor has how many outputs? A) 1. B) 3. C) 2. D) 4. Show Answer Correct Answer: C) 2. 19. Select the true function of Karnaugh Map (K-Map):i. Solve difficult expressionii. Simplified Boolean expressioniii. Develop truth table of combinational circuitiv. Differentiate SOP and POS A) I, ii, iii. B) I, ii, iii, iv. C) I, ii, iv. D) Ii, iii, iv. Show Answer Correct Answer: A) I, ii, iii. 20. A data type that represents true or false. (1 mark) A) Boolean. B) Integer. C) String. D) Character. E) Float. Show Answer Correct Answer: A) Boolean. 21. If an input A is given to an inverter gate i.e. NOT gate, the output will be: A) 1. B) A'. C) A. D) 1/A. Show Answer Correct Answer: B) A'. 22. How many rows will a truth table with 2 inputs have A) 2. B) 4. C) 16. D) 8. Show Answer Correct Answer: B) 4. 23. The maxterm designator of the term, A'+B'+C+C' A) 2. B) 13. C) 15. D) None. Show Answer Correct Answer: B) 13. 24. Which of the following gates is universal? A) OR. B) NAND. C) XOR. D) NOT. Show Answer Correct Answer: B) NAND. 25. A . ( B + C )is the same as A) A . B . C. B) ( A + B ) ( A + C). C) ( A . B ) + ( A . C ). D) A + B + C. Show Answer Correct Answer: C) ( A . B ) + ( A . C ). 26. List the two universal logic gates. A) AND and OR. B) XOR and XNOR. C) NAND and NOR. D) NOT and OR. Show Answer Correct Answer: C) NAND and NOR. 27. What is the purpose of a full adder? A) Adds two binary digits and a carry-in. B) Stores a memory address. C) Converts binary to decimal. D) Performs subtraction. Show Answer Correct Answer: A) Adds two binary digits and a carry-in. 28. ( A + D ) ( A + C) =? A) A + DC + AD. B) A + DC. C) DC. D) None. Show Answer Correct Answer: B) A + DC. 29. If 99 NOR gates are cascaded one after another and input is 1, then find the output signal:- A) True. B) 1. C) False. D) 0. Show Answer Correct Answer: D) 0. 30. Which type of Boolean checks for a specific condition? A) Comparative Boolean. B) Conditional Boolean. C) Arithmetic Boolean. D) Logical Boolean. Show Answer Correct Answer: B) Conditional Boolean. 31. For an AND gate to output true, what is required of its inputs? A) Only one input is true. B) At least one input is true. C) Both inputs are true. D) Both inputs are false. Show Answer Correct Answer: C) Both inputs are true. 32. What is De Morgan's First Law? A) A + (B * C) = (A + B) * (A + C). B) NOT(A + B) = NOT(A) * NOT(B). C) NOT(A * B) = NOT(A) * NOT(B). D) A * (B + C) = (A * B) + (A * C). Show Answer Correct Answer: B) NOT(A + B) = NOT(A) * NOT(B). 33. Which of the following is the Identity Law in Boolean Algebra? A) A + A = A. B) A + 0 = A. C) A 1 = 1. D) A + A' = 1. Show Answer Correct Answer: B) A + 0 = A. 34. Recognize the Boolean law expressed by A + 1 = 1. A) Null law. B) Domination law. C) Identity law. D) Idempotent law. Show Answer Correct Answer: B) Domination law. 35. With four signal inputs, how many possible outputs are there? A) 16. B) 24. C) 4. D) 8. Show Answer Correct Answer: A) 16. 36. The NOT gate takes only one input (it is a unary operator). True or False? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 37. In what year was Boolean algebra first introduced? A) 1847. B) 1913. C) 1854. D) 1880. Show Answer Correct Answer: A) 1847. 38. According to the order of precedence in Boolean algebra, which operation is evaluated first? A) OR. B) AND. C) NOT. D) XOR. Show Answer Correct Answer: C) NOT. 39. How many states are there in the truth table for a three-input AND gate? A) 6. B) 8. C) 2. D) 4. Show Answer Correct Answer: B) 8. 40. 4) Which of the following gate will give a 0 when both of its inputs are 1? A) AND. B) OR. C) NAND. D) EXOR. Show Answer Correct Answer: C) NAND. 41. In Boolean algebra, the operation A + A is equal to: A) 1. B) A'. C) 0. D) A. Show Answer Correct Answer: D) A. 42. What is the output of A OR B if A = 0 and B = 1? A) B. B) A. C) 1. D) 0. Show Answer Correct Answer: C) 1. 43. An Exclusive OR, or XOR, is like a regular OR, but with one difference: A) If both inputs are true, the XOR is false. B) If both inputs are false, the XOR is true. C) All the above. D) None of the above. Show Answer Correct Answer: A) If both inputs are true, the XOR is false. 44. Evaluate this Boolean expression:I am in Year 8 AND I am in Year 9 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 45. How many rows will a truth table with 1 input have A) 16. B) 2. C) 8. D) 4. Show Answer Correct Answer: B) 2. 46. The AND and OR gate both take two inputs, while the NOT gate takes just one. True or False? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 47. Which gate has all inputs HIGH gives output LOW? A) AND. B) OR. C) NAND. D) XOR. Show Answer Correct Answer: C) NAND. 48. In boolean algebra, which operation does putting a bar above a letter represent? A) NOT. B) AND. C) OR. D) None of the above. Show Answer Correct Answer: A) NOT. 49. What is the output of the following boolean expression in Java:System.out.println(5 != 5)? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 50. Benjamin is learning about digital circuits in his electronics class. His teacher asks him:How many fundamental operations are there in Boolean Algebra? A) One. B) Three. C) Four. D) Two. Show Answer Correct Answer: B) Three. 51. Evaluate:20<=20 and 20>=20 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 52. When the result of any logical statement or expression is always TRUE or 1, it is called ..... A) Boolean False. B) Fallacy. C) Boolean True. D) Tautology. Show Answer Correct Answer: D) Tautology. 53. Identify the logic gate also called an inverter. A) NAND. B) NOT. C) NOR. D) AND. Show Answer Correct Answer: B) NOT. 54. What is the significance of the identity law in Boolean algebra? A) The identity law allows simplification of Boolean expressions and is essential in digital circuit design. B) The identity law is used to create complex Boolean expressions. C) The identity law is only applicable in arithmetic operations. D) The identity law has no impact on digital circuit design. Show Answer Correct Answer: A) The identity law allows simplification of Boolean expressions and is essential in digital circuit design. 55. Decide if the boolean expression evaluates to true or false. Given:a = 1, b = 0, c = 3a == b A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 56. What is the result of the Boolean expression A AND (A' OR B)? A) A. B) B. C) A'. D) A OR B. Show Answer Correct Answer: A) A. 57. At which clock period does a D-type flip flop change A) Falling Edge. B) Clock Width. C) Clock Period. D) Rising Edge. Show Answer Correct Answer: D) Rising Edge. 58. Which of the following is FALSE about the NOT gate? A) Output of NOT is complementary to the input. B) When the input to NOT gate is 0, the output is 1. C) A NOT gate has two input signals and an output signal. D) None of the above. Show Answer Correct Answer: C) A NOT gate has two input signals and an output signal. 59. ..... operate on statements that are true or false. A) Arithmetic operations. B) Logical operations. C) All the above. D) None of the above. Show Answer Correct Answer: B) Logical operations. 60. For the AND Boolean operation, the output is only true if ..... A) One input is true. B) One input is false. C) Both inputs are true. D) Both inputs are false. Show Answer Correct Answer: C) Both inputs are true. ← PreviousNext →Related QuizzesScience QuizzesClass 12 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books