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
∀a,b, c ε R,a +c = b + c = > a = b
Choose an answer
Reflexive property
Symmetric property
Cancellations property w.r.t. addition
Transitive property
Previous
Skip
Next
Question # 2
If Z
1
= 1 + i, Z
2
= 2+3i, then |Z
1
- Z
2
| = ?
Choose an answer
Previous
Skip
Next
Question # 3
Choose an answer
1
-1
Previous
Skip
Next
Question # 4
The solution set of the equation |3x + 2| = 5 is
Choose an answer
Previous
Skip
Next
Question # 5
Choose an answer
Previous
Skip
Next
Question # 6
(a,b) +(-a,-b) =
Choose an answer
(0,0)
(a,b)
(-a,-b)
(1,1)
Previous
Skip
Next
Question # 7
Choose an answer
Principle of equality of fractions
Rule for product of fractions
Golden rule for fractions
Rule for quotient of fractions
Previous
Skip
Next
Question # 8
In R, the additive inverse of a is
Choose an answer
0
1
-a
1/a
Previous
Skip
Next
Question # 9
What is the conjugate of -7 -2i?
Choose an answer
-7 + 2i
7 + 2i
7 -2i
None of these
Previous
Skip
Next
Question # 10
What is the conjugate of -7 -2i ?
Choose an answer
-7 + 2i
7 +2i
7 -2i
√53
Previous
Skip
Next
Question # 11
In (x + iy), y is called as
Choose an answer
Imaginary part
Complex number
Real part
None of above
Previous
Skip
Next
Question # 12
The set of rationals numbers between 0 and I is
Choose an answer
Finite
Null set
Infinite
None of these
Previous
Skip
Next
Question # 13
I is not
Choose an answer
Real number
Natural number
Prime Number
Whole Number
Previous
Skip
Next
Question # 14
Choose an answer
1
-1
Previous
Skip
Next
Question # 15
Choose an answer
Previous
Skip
Next
Question # 16
The multiplicative inverse of 1 is
Choose an answer
1
-1
0
Does not exist
Previous
Skip
Next
Question # 17
i
9
=
Choose an answer
i
2
-1
1
i
Previous
Skip
Next
Question # 18
The multiplicative inverse of (a,b) is
Choose an answer
Previous
Skip
Next
Question # 19
∀a,b ε R, ab = be is a
Choose an answer
Commutative law of multiplication
Closure law of multiplication
Associative law of multiplication
Multiplicative identity
Previous
Skip
Next
Question # 20
3/2 is
Choose an answer
An irrational number
Whole number
A positive integer
A rational number
Previous
Skip
Next
Question # 21
i
=
Choose an answer
√1
√2
√-2
√-1
Previous
Skip
Next
Question # 22
Choose an answer
A positive integer
A negative integer
A natural number
An irrational number
Previous
Skip
Next
Question # 23
The multiplicative inverse of 2/3 is
Choose an answer
3/2
-2/3
-3/2
1
Previous
Skip
Next
Question # 24
The additive inverse of 2/3 is
Choose an answer
3/2
-2/3
-3/2
0
Previous
Skip
Next
Question # 25
√25 is a number
Choose an answer
Rational
Irrational
Natural
Odd
Previous
Skip
Next
Question # 26
Choose an answer
Associative law of addition
Commutative law of addition
Additive identity
Closure law of addition
Previous
Skip
Next
Question # 27
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 # 28
Geometrically the modulus of a complex number represents its distance from the
Choose an answer
Point (1,0)
Point (0,1)
Point (1,1)
Point (0,0)
Previous
Skip
Next
Question # 29
∀x,y∈R and x> 0 , y>0, if x > y
Choose an answer
None of these
Previous
Skip
Next
Question # 30
Every natural number is
Choose an answer
A prime number
An irrational number
An integer
An even number
Previous
Skip
Next
Question # 31
Associative law of multiplication
Choose an answer
ab = ba
a(bc) = (ab) c
a(b+c) = ab + ac
(a + b)c = ac + bc
Previous
Skip
Next
Back