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

According to Boolean algebra x + 1 = ______________

• 0 A
• 1 B
• x C
• 
  D

Boolean expression for NOR gate with two inputs x and y can be written as.

• x + y__ A
• x. y B
• x + y C
• 
  D

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

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

Which of the following gate is two level logic gate.

• OR gate A
• AND gate B
• EXCLUSIVE OR gate C
• NAND gate D

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

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

The logic device that perform Boolean multiplication is.

• AND gate A
• OR gate B
• Inverter C
• None of these D

The output will be one in case any input is one in the case of.

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

Logical multiplication refers to operation of.

• OR gate A
• AND gate B
• NOT gate C
• inverter gater D

• x + y A
• 
  B
• 
  C
• 
  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

According to absorption law x. (x+y) =

• x A
• y B
• 1+x C
• 1+y D

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

• 5A A
• A B
• A⁵ C
• 1 D

If A and B are two 1-bit numbers, what logic gates will be required to test for A=B?

• NOR gate A
• EXCLUSIVE OR gate B
• EXCLUSIVE NOT gate C
• OR gate D

• A + B + C + D A
• 
  B
• A + B C + D C
• 
  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