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 Mathematics Chapter 1 Number System Online Test MCQs With Answers
Question # 1
Choose an answer
1
-i
i
0
Previous
Skip
Next
Question # 2
√2 is a number
Choose an answer
Rational
Irrational
Even
Odd
Previous
Skip
Next
Question # 3
Choose an answer
1
-1
Previous
Skip
Next
Question # 4
In set builder notation the set {0,1,2,........100} can be written as
Choose an answer
{x / xε B ∧ x ≤ 100}
{x / x ∈ W ∧ x < 101}
{x / x ∈ Z ∧ x < 101}
The set of first 100 whole numbers
Previous
Skip
Next
Question # 5
Choose an answer
Set of whole number
Rational Numbers
Complex numbers
Whole numbers
Previous
Skip
Next
Question # 6
√2 +√3 +√5) = (√2 +√3 +√5: this property is called
Choose an answer
associative property w.r.t addition
commutative property
Closure property w.r.t addition
Additive identity
Previous
Skip
Next
Question # 7
Such fraction which can not be written in the form ofp⁄q where p,q and q≠ 0,such fractions are called.
Choose an answer
Fractinal numbers
Rational Numbers
Even Numbers
Whole Numbers
Previous
Skip
Next
Question # 8
In R the number of identity elements w.r.t.'.' is
Choose an answer
One
Two
Three
Four
Previous
Skip
Next
Question # 9
Choose an answer
Previous
Skip
Next
Question # 10
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 # 11
Choose an answer
Additive property in R
Multiplication property in R
Cancellation property in R
Distribution property in R
Previous
Skip
Next
Question # 12
For any real numbers x,y,xy=o ⇒
Choose an answer
x ≠ 0 ∧ y ≠ 0
x = 0 ∨ y = 0
x = 0
y = 0
Previous
Skip
Next
Question # 13
√25 is a number
Choose an answer
Rational
Irrational
Natural
Odd
Previous
Skip
Next
Question # 14
Choose an answer
Trichotomy property
Additive property of inequality
Transitive property
Multiplicative property
Previous
Skip
Next
Question # 15
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 # 16
Choose an answer
A natural number
A rational number
An irrational number
A whole number
Previous
Skip
Next
Question # 17
Choose an answer
A rational number
A natural number
An irrational number
An integer
Previous
Skip
Next
Question # 18
Any recurring decimal represents a
Choose an answer
Irrational no
Integer
Rational no
None of these
Previous
Skip
Next
Question # 19
i =
Choose an answer
Previous
Skip
Next
Question # 20
Choose an answer
-8
8
8i
32
Previous
Skip
Next
Question # 21
What is the conjugate of -7 -2i ?
Choose an answer
-7 + 2i
7 +2i
7 -2i
√53
Previous
Skip
Next
Question # 22
a.a
-1
= a
-1
.a = 1 is a
Choose an answer
Commutative law of multiplication
Multiplicative identity
Associative law of multiplication
Multiplicative inverse
Previous
Skip
Next
Question # 23
If A = {x / x ∈ R ∧ x
2
- 16 = 0} then A =
Choose an answer
- x
Infinite set
Φ
{-4,4}
Previous
Skip
Next
Question # 24
Choose an answer
(a + b)c = ac + bc
a + b = b + a
(a + b) + c = a + (b + c)
a(b +c) = ab + ac
Previous
Skip
Next
Question # 25
Choose an answer
None of these
Previous
Skip
Next
Question # 26
Choose an answer
Previous
Skip
Next
Question # 27
Choose an answer
Previous
Skip
Next
Question # 28
∀a,b, c ε R ac = bc ⇒ a = b, c ≠ 0 is a
Choose an answer
Symmetric property
Cancellation property w.r.t multiplication
Reflexive property
Transitive property
Previous
Skip
Next
Question # 29
Additive inverse of - a - b is
Choose an answer
a
-a + b
a - b
a + b
Previous
Skip
Next
Question # 30
Choose an answer
Previous
Skip
Next
Question # 31
The additive inverse of 0 is
Choose an answer
1
-1
0
Does not exist
Previous
Skip
Next
Back