More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
ECAT Pre General Science Mathematics Chapter 1 Number System Online Test MCQs With Answers
Question # 1
Choose an answer
real number
complex number
rational number
irrational number
Previous
Skip
Next
Question # 2
Name the property used in 4 + 9 = 9 + 4
Choose an answer
Associative property of addition
Commutative property of addition
Distributive property
Additive identity
Previous
Skip
Next
Question # 3
Choose an answer
Previous
Skip
Next
Question # 4
(7, 9) + (3, -5) =
Choose an answer
(4, 4)
(10, 4)
(9, -5)
(7, 3)
Previous
Skip
Next
Question # 5
Choose an answer
Previous
Skip
Next
Question # 6
The square root of every incomplete square is an
Choose an answer
Rational numbers
Even numbers
odd numbers
Irrational numbers
Previous
Skip
Next
Question # 7
Choose an answer
Previous
Skip
Next
Question # 8
Choose an answer
Previous
Skip
Next
Question # 9
In R the number of identity elements w.r.t.'.' is
Choose an answer
One
Two
Three
Four
Previous
Skip
Next
Question # 10
In (x + iy) x is the known as
Choose an answer
Imaginary part of complex number
Real part of complex number
Complex number
None of above
Previous
Skip
Next
Question # 11
Choose an answer
are real no
both are not real
are imaginary no
both are imaginary
Previous
Skip
Next
Question # 12
i
101
=
Choose an answer
i
i
2
-i
-1
Previous
Skip
Next
Question # 13
The identity element with respect to subtraction is
Choose an answer
0
1
-1
Does not exist
Previous
Skip
Next
Question # 14
If 0 = R, thenthe additive inverse of a is
Choose an answer
1/9
1/-9
a
-a
Previous
Skip
Next
Question # 15
Choose an answer
-8
8
8i
32
Previous
Skip
Next
Question # 16
A non-terminating, non-recurring decimal represent
Choose an answer
A natural number
A rational number
An irrational number
A prime number
Previous
Skip
Next
Question # 17
√23 is
Choose an answer
A rational number
A irrational number
An even integer
A factor of 36
Previous
Skip
Next
Question # 18
Choose an answer
Previous
Skip
Next
Question # 19
Choose an answer
Principle of equality of fractions
Rule for product of fraction
Rule for quotient of fraction
Golden rule of fractions
Previous
Skip
Next
Question # 20
Choose an answer
1
-i
i
0
Previous
Skip
Next
Question # 21
The polar form of complex number x ≠ I y =
Choose an answer
r cos θ+ r sin θ
r cos θ+ is sin θ
cos θ+ r sin θ
i cos θ+ i sin θ
Previous
Skip
Next
Question # 22
The value of x, and y, when (x + iy)
2
= 5 + 4i
Choose an answer
X = 2, y = -1
X = -2, y=1
X = 2, y = -1
X = 2, y = 2
Previous
Skip
Next
Question # 23
∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of
Choose an answer
Commutative law of addition
Associative law of addition
Additive identity
Additive inverse
Previous
Skip
Next
Question # 24
Every natural number is
Choose an answer
A prime number
An irrational number
An integer
An even number
Previous
Skip
Next
Question # 25
A subset of set of complex number whose elements are of the form (a,0) is called
Choose an answer
Real number
Complex number
Rational number
Irrational number
Previous
Skip
Next
Question # 26
Choose an answer
A rational number
An irrational number
An odd number
A prime number
Previous
Skip
Next
Question # 27
Choose an answer
Closure law of addition
Associative law of addition
Additive inverse
Additive identity
Previous
Skip
Next
Question # 28
Choose an answer
Principle of equality of Fractions
Rule for product of fraction
Golden rule of fraction
Rule of quotient of Fraction
Previous
Skip
Next
Question # 29
a >b ⇒a +c >b +c is known as
Choose an answer
Trichotomy property
Additive property of inequality
Transitive property
Multiplicative property
Previous
Skip
Next
Question # 30
i
2
=
Choose an answer
1
2
-1
0
Previous
Skip
Next
Back