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Online Tests
Mathematics ECAT Pre Engineering Chapter 1 Number System Online Test MCQs With Answers
Question # 1
6 is
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A prime integar
An irrational number
A rational number
An odd integer
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Question # 2
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Symmetric property
Cancellation property w.r.t. multiplication
Reflexive property
Transitive property
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Question # 3
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-8
8
8i
32
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Question # 4
The identity element with respect to subtraction is
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0
1
-1
Does not exist
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Question # 5
3/4 is ______
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An odd number
An even number
A natural number
A rational number
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Question # 6
Zero is
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An irrational number
A rational number
A negative integer
A positive number
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Question # 7
The set of natural no. is closed under
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multiplication
subtraction
difference
division
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Question # 8
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Associative property of addition
Commutative property of addition
Distributive property
Additive identity
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Question # 9
Name the property used in 100 + 0 = 100
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Additive inverse
Multiplicative inverse
Additive identity
Multiplicative identity
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Question # 10
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1
-1
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Question # 11
14 is not a
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Prime number
Whole number
Even number
Real number
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Question # 12
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(a + b)c = ac + bc
a + b = b + a
(a + b) + c = a + (b + c)
a(b +c) = ab + ac
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Question # 13
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Principle of equality of fractions
Rule for product of fractions
Golden rule for fractions
Rule for quotient of fractions
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Question # 14
Q∪ Q' =
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Q
Q'
N
R
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Question # 15
Every irrational number is
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A real number
A prime number
A natural number
An integer
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Question # 16
A non-terminating, non-recurring decimal represent
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A natural number
A rational number
An irrational number
A prime number
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Question # 17
If
∀a,b ε R,then a +b ε R is a property
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Closure law of addition
Associative law of addition
Additive inverse
Additive identity
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Question # 18
π is the ration of
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Area of a circle to its diameter
Area of a circle to its radius
Circumference of a circle to its diameter
Circumference of circle to its radius
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Question # 19
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A complex number
A rational number
A natural number
An irrational number
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Question # 20
√23 is
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A rational number
A irrational number
An even integer
A factor of 36
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Question # 21
Every prime number is also
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Rational number
Even number
Irrational number
Multiple of two numbers
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Question # 22
The multiplicative inverse of 4 is
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-4
-1/4
1/4
1
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Question # 23
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Question # 24
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additive property
multiplicative property
additive inverse
additive identity
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Question # 25
The identity element with respect to subtraction is
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0
-1
0 and 1
None of thes
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Question # 26
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Commutative property of addition
Closure property of addition
Additive inverse
Associative property w.r.t. to addition
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Question # 27
The conjugate of √5
i
is
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√5
-√5 i
i
5i
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Question # 28
Additive inverse of - a - b is
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a
-a + b
a - b
a + b
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Question # 29
The symbol of irrational is
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W
N
Q
Q
'
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Question # 30
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A natural number
A rational number
An irrational number
A whole number
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Question # 31
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