2nd puc computer science chapter 2 and 3 mcq with answers

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 1. Who developed Boolean algebra?

A) George Boole
B) Charles Babbage
C) Herman Hollerith
D) Blaise Pascal

ANSWER= A) George Boole

 

2. The another name for Boolean algebra is ________

A) Digital Algebra
B) Switching algebra
C) Binary algebra
D) Postulate algebra

ANSWER= B) Switching algebra

 

3. Which among the following is not a Basic gate?

A) AND gate
B) OR gate
C) NOT gate
D) XOR gate

ANSWER= D) XOR gate

 

4. The other name Inverter gate is ________

A) Not gate
B) OR gate
C) AND gate
D) XOR gate

ANSWER= A) Not gate

 

5. which gate takes maximum one input signal?

A) AND gate
B) OR gate
C) NOT gate
D) XNOR gate

ANSWER= C) NOT gate

 

6. Which among the following is not a Boolean Postulate?

A) X+X=X
B) X. X=0
C) 0.X = 0
D) 0 + X = X

ANSWER= B) X. X=0

 

7. Involution law states that

A) X ̿=X
B) X.X = X
C) X+X=X
D) X ̿=0

ANSWER= A) X ̿=X

 

8. ________ is not a De’Morgan’s Theorem

A) (X+Y) ̅ = X ̅.Y ̅
B) (X.Y) ̅ = X ̅+Y ̅
C) (X+Y+Z) ̅ = X ̅.Y ̅.Z ̅
D) XYZ = X.Y.Z

ANSWER= D) XYZ = X.Y.Z

 

9. Choose the concept which does not belongs to the group

A) OR to AND
B) AND to OR
C) . to +
D) + to |

ANSWER= D) + to |

 

10. Minterm is _________

A) Product of n variables
B) Sum of n variables
C) Division of n variables
D) Mod of n variables

ANSWER= A) Product of n variables

 

11. Maxterm is ________

A) Product of n variables
B) Sum of n variables
C) Division of n variables
D) Mod of n variables

ANSWER= B) Sum of n variables

 

12. Which one is not a Derived Gate?

A) NOR
B) NAND
C) XOR
D) OR

ANSWER= D) OR

 

13. Karnaugh Map is used to _______ .

A) Reduce the expression
B) Increase the expression
C) Calculate the expression
D) Format the expression

ANSWER= A) Reduce the expression

 

14. Indempotence Law states that

A) X + X = X
B) X + Y = X
C) X . X = 0
D) X + X = 1

ANSWER= A) X + X = X

 

15. Complementarity Law states that

A) X.X ̅ = 0
B) X+X ̅ = 0
C) X + Y = X Y
D) X.X ̅ = 1

ANSWER= A) X.X ̅ = 0

 

16. Which among the following is not a commutative Law ?

A) x + y = y + x
B) x . y = y . x
C) x + y = y . x
D) 2 + 3 = 3 + 2

ANSWER= C) x + y = y . x

 

17. Which one is the associative law?

A) x+(y+z) = (x+y)+z
B) x+y+z = z+y+x
C) x+yz = xy + xz
D) yz = z+y

ANSWER= A) x+(y+z) = (x+y)+z

 

18. Distributive Law states that ________

A) x(y+z) = xy+xz
B) x+(y+z) = (x+y)+z
C) x(yz) = (xy)z
D) x+y+z = z+y+x

ANSWER= A) x(y+z) = xy+xz

 

19. Which among the following is not a Absorption Law?

A) X+XY = X
B) X.(X+Y) = X
C) X.X ̅Y = X+Y
D) X+Y=Y+X

ANSWER= D) X+Y=Y+X

 

20. Minterm notation of (X'Y'Z) is

A) m1
B) m3
C) m4
D) m5

ANSWER= A) m1

 

21. Minterm notation of x y z is

A) m1
B) m3
C) m5
D) m7

ANSWER= D) m7

 

22. Maxterm notation of x+y+z is

A) M0
B) M1
C) M2
D) M3

ANSWER= A) M0

 

23. How many variables we get in the reduced form for pair reduction in K-Map?

A) 3
B) 2
C) 4
D) 1

ANSWER= A) 3

 

24. The X + X = X is

A) Involution Law
B) Indempotence Law
C) Commutative Law
D) Associative Law

ANSWER= B) Indempotence Law

 

25. Product of all the literals is called

A) Minterm
B) Maxterm
C) K-Map
D) Duality Form

ANSWER= A) Minterm

 

26. Sum of all the Literals is called

A) Minterm
B) Maxterm
C) K-Map
D) Duality Form

ANSWER= B) Maxterm

 

27. How many variables we get in the reduced form for Octet reduction in K-Map

A) 3
B) 2
C) 1
D) 4

ANSWER= C) 1