1. . The expression for Absorption law is given by:
(A) A + AB = B
(B) A + AB = A
(C) AB + AA’ = A
(D) A + B = B + A
2. . According to boolean law: A + 1 = ?:
(A) A
(B) 1
(C) 0
(D) A’
3. . The involution of A is equal to ________:
(A) A
(B) A’
(C) 1
(D) 0
4. . A(A + B) = ?:
(A) A
(B) 1
(C) (1 + AB)
(D) AB
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. . (A + B)(A’ * B’) = ?:
(A) 1
(B) AB’
(C) AB
(D) 0
7. . 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’)
8. . The logical sum of two or more logical product terms is called:
(A) SOP
(B) POS
(C) OR operation
(D) Nand
9. . In which of the following gates the output is 1 if and only if at least one input is 1?
(A) AND
(B) OR
(C) NAND
(D) NOR
10. . Odd parity of word can be conveniently tested by:
(A) OR gate
(B) And gate
(C) Nand gate
(D) X-OR