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
Mathematics ECAT Pre Engineering Chapter 1 Number System Online Test MCQs With Answers
Question # 1
The solution set of the equation |3x + 2| = 5 is
Choose an answer
Previous
Skip
Next
Question # 2
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 # 3
Q∪ Q' =
Choose an answer
Q
Q'
N
R
Previous
Skip
Next
Question # 4
Choose an answer
0
1
-1
None of these
Previous
Skip
Next
Question # 5
Choose an answer
Previous
Skip
Next
Question # 6
The product of complex numbers (a,b) and (c,d) is
Choose an answer
(ac, bd)
(ac-bd, ad+bc)
(ab,cd)
(ac+bd,ad-bc)
Previous
Skip
Next
Question # 7
Choose an answer
Previous
Skip
Next
Question # 8
If a > b or a < b than a = b is a
Choose an answer
Additive property
Transitive property
Trichotomy property of inequality
Previous
Skip
Next
Question # 9
i
=
Choose an answer
√1
√2
√-2
√-1
Previous
Skip
Next
Question # 10
If a set S contains n elements then P (S) has ........ number of elements
Choose an answer
2
n
2
n2
2.n
n
2
Previous
Skip
Next
Question # 11
Choose an answer
Previous
Skip
Next
Question # 12
∀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 # 13
If z
1
=√-36 ,z
2
=√-25,z3 =√-16 then
Choose an answer
15
15i
-15i
-15
Previous
Skip
Next
Question # 14
(7,9) +(3,-5) =
Choose an answer
(4,4)
(10,4)
(9,-5)
(7,3)
Previous
Skip
Next
Question # 15
The square roots of negative numbers is called
Choose an answer
Real no
Complex no
Positive no
Negative no
Previous
Skip
Next
Question # 16
The set of positive integers, 0 and negative integers is known as the set of
Choose an answer
Natural numbers
Rational numbers
All integers
Irrational numbers
Previous
Skip
Next
Question # 17
Choose an answer
Associative law of addition
Commutative law of addition
Additive identity
Closure law of addition
Previous
Skip
Next
Question # 18
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
Question # 19
Every recurring decimal represents
Choose an answer
A natural number
A rational number
An irrational number
A whole number
Previous
Skip
Next
Question # 20
It is not possible to find the exact value of
Choose an answer
π
√9
∛27
√1
Previous
Skip
Next
Question # 21
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 # 22
Zero is
Choose an answer
An irrational number
A rational number
A negative integer
A positive number
Previous
Skip
Next
Question # 23
∀a,b,c∈R and c>0,then
Choose an answer
a>b ⇒ ac < bc
a>b ⇒ ac > bc
a<b ⇒ ac > bc
None of these
Previous
Skip
Next
Question # 24
Choose an answer
Associate law of addition
Commutative law of addition
Additive identity
Closure law of addition
Previous
Skip
Next
Question # 25
(a,0) x (c, 0) =
Choose an answer
(0,ac)
(ac, 0)
(0,0)
(a, c)
Previous
Skip
Next
Question # 26
Name the property used in 4 x (5 x 8) = ( 4 x 5) x 8
Choose an answer
Associative property of addition
Associative property of multiplication
Additive identity
Multiplicative identity
Previous
Skip
Next
Question # 27
Choose an answer
Previous
Skip
Next
Question # 28
If 0 = R, thenthe additive inverse of a is
Choose an answer
1/9
1/-9
a
-a
Previous
Skip
Next
Question # 29
Choose an answer
1
-1
Previous
Skip
Next
Question # 30
Choose an answer
Associative law of multiplication
Commutative law of addition
Commutative law of multiplication
Associative law of addition
Previous
Skip
Next
Question # 31
i
-(4n+2)
= -------------------------------
Choose an answer
1
i
-1
-i
Previous
Skip
Next
Back