ECAT Pre Computer Science MCQ Test For Computer Chapter 5 With Answer

• 0 A
• 1 B
• x C
• 
  D

In Boolean algebra A.0 is

• 0 A
• 1 B
• A+0 C
• A+1 D

According to Boolean algebra x + 1 = ______________

• 0 A
• 1 B
• x C
• 
  D

Pick up wrong logical expression

• 
  A
• 
  B
• 
  C
• 
  D

Boolean algebra use which of the following to represent arithmetic quantities.

• decimal digits A
• exponents B
• binary bits C
• fractions D

• x . y A
• x + y B
• x . y C
• x . y D

Logical addition refers to operation of

• OR gate A
• AND gate B
• NOT gate C
• invertr gate D

In Boolean algebra A.A.A.A.A

• 5A A
• A B
• A⁵ C
• 1 D

Which of the following function is referred as the complementary.?

• OR function A
• NOT function B
• NAND function C
• AND function D

The commutative law in Boolean Algebra, where a, b and c are binary number is.

• a+0=a A
• a+1=1 B
• a+b=b+a C
• a. (b+c) = a.b +a.c. D

An OR gate has 6 input. The number of input words in its truth table are.

• 6 A
• 32 B
• 64 C
• 128 D

Which of the following statement is true in the case of AND gate with input A and B.

• If A and B are applied, there will not be any output A
• If neither input is applied, there will be an output B
• If one input is applied there will not be any output C
• If one input is applied there will be an output D

Which of the following operations are used by Boolean algebra.?

• Boolean addition A
• Boolean multiplication B
• Boolean complementation C
• All of the above D

• 0 A
• 1 B
• x C
• 
  D

Boolean description for the exclusive OR gate for two inputs x and y can be written as.

• x + y __ A
• _x _y B
• x. y + x. y C
• x . y + x .y D