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Mathematics 9th Class English Medium Unit 2 Online Test MCQs With Answers
Question # 1
Choose an answer
Natural number
Whole number
integers
Rational numbers
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Question # 2
Solution of x
2
= -1 in real numbers:
Choose an answer
-1
+1
+1
Solution does not exist
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Question # 3
The conjugate of 5 + 4i is
Choose an answer
-5 + 4i
-5 - 4i
5 - 4i
5 + 4i
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Question # 4
Real part of 2ab(i + i
2
) is:
Choose an answer
2ab
-2ab
2abi
-2abi
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Question # 5
Choose an answer
-2/5
2/5
5/2
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Question # 6
Choose an answer
Additive identity
Additive inverse
Multiplicative identiry
Multiplicative inverse
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Question # 7
∀ a∈ R⇒ a = a is __________ property:
Choose an answer
Reflexive
Symmetric
Transitive
Additive property
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Question # 8
There exists a unique real number 1, is called ________ in multiplication:
Choose an answer
Multiplicative inverse
Additive inverse
Multiplicative identity
Additive identity
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Question # 9
The value of (-i)
8
:
Choose an answer
-i
i
1
-1
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Question # 10
The real numbers are represented geometrically by points on _________,
Choose an answer
Plane
Line
Space
None
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Question # 11
If Z < 0 then x < y
→
Choose an answer
xz < yz
xz > yz
xz = yz
None of these
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Question # 12
∀ a∈ R⇒ a + o = a = o + a, then O is called:
Choose an answer
Multiplicative identity
Additive identity
Additive inverse
Multiplicative inverse
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Question # 13
The value of i
9 is:
Choose an answer
1
-1
i
-i
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Question # 14
Choose an answer
a = Im
a = Re(z)
a = Natural number
None of these
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Question # 15
The conjugate of 5+ 4i is:
Choose an answer
-5 +4i
-5 - 4i
5 - 4i
5 + 4i
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Question # 16
Conjugate of real number is:
Choose an answer
Pure imaginary
Real
Complex
None
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Question # 17
Which of the following is associative property w.r.to addition:
Choose an answer
a + b = b + a
a (bc) = (ab) c
a + (b + c) = (a + b) + c
None of these
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Question # 18
Identify the property used in x > y Or x = y Or x < y:
Choose an answer
Symmetric
Reflexive
Irichotomy
Transitive
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