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ECAT Computer Science Chapter 5 Boolean Algebra Online Test MCQs With Answers
Question # 1
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x . y
x + y
x
.
y
x . y
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Question # 2
Logical addition refers to operation of
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OR gate
AND gate
NOT gate
invertr gate
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Question # 3
The 'Boolean Algebra' is based on the premise that
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there are two states
differential equations can be solved by analog circuits.
either a statement is true or false
arithmetic operations can be carried out
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Question # 4
According to Boolean algebra A+A+......+A is
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A
n A
0
1
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Question # 5
Pick up wrong logical expression
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Question # 6
The circuit that is used for parallel to serial conversion is
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decoder
encoder
multiplexer
demultiplexer
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Question # 7
Odd parity of a word can be conveniently tested by.
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OR gate
XOR gate
NOR gate
NAND gate
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Question # 8
The output will be one in case any input is one in the case of.
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OR gate
AND gate
NAND gate
NOT gate
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Question # 9
According to aborption law x+x.y=
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x
y
1 + x
1 + y
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Question # 10
In a three input NAND gate, if all the inputs are 1, the output is.
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0
1
3
indeterminate
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Question # 11
Boolean
expre
ssion for NOR gate with t
wo inp
uts x and y can be written as.
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x
+ y__
x. y
x +
y
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Question # 12
According to absorption law x. (x+y) =
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x
y
1+x
1+y
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Question # 13
In Boolean algebra A.A.A.A.A
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5A
A
A
5
1
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Question # 14
According to Idempotent law , x + y = __________
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1
0
x
x . x
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Question # 15
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0
1
x
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