This set of Digital Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Boolean Logic Operations”.

1. 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

2. According to boolean law: A + 1 = ?

a) 1

b) A

c) 0

d) A’

3. In boolean algebra, the OR operation is performed by which properties?

a) Associative properties

b) Commutative properties

c) Distributive properties

d) All of the Mentioned

4. The involution of A is equal to _________

a) A

b) A’

c) 1

d) 0

5. DeMorgan’s theorem states that _________

a) (AB)’ = A’ + B’

b) (A + B)’ = A’ * B

c) A’ + B’ = A’B’

d) (AB)’ = A’ + B

6. Complement of the expression A’B + CD’ is _________

a) (A’ + B)(C’ + D)

b) (A + B’)(C’ + D)

c) (A’ + B)(C’ + D)

d) (A + B’)(C + D’)

7. A(A + B) = ?

a) AB

b) 1

c) (1 + AB)

d) A

8. (A + B)(A’ * B’) = ?

a) 1

b) 0

c) AB

d) AB’

9. Simplify Y = AB’ + (A’ + B)C.

a) AB’ + C

b) AB + AC

c) A’B + AC’

d) AB + A

10. The boolean function A + BC is a reduced form of ____________

a) AB + BC

b) (A + B)(A + C)

c) A’B + AB’C

d) (A + C)B