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11th Class Part 1 Mathematics Chapter 1 Test Online MCQs With Answers
Question # 1
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additive property
multiplicative inverseproperty
transitive property
negative property
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Question # 2
Conjugate of a- i b is:
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b + ia
-a + ib
-a - ib
a + ib
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Question # 3
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real numbers
complexnumbers
primenumbers
oddnumbers
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Question # 4
Conjugate of -3 -2 i is:
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3 + 2i
-3 + 2i
2 + 3i
-2 + 3i
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Question # 5
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integer
rational number
irrational number
natural number
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Question # 6
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a + c = b + d
a + b = c + d
a - b = c - d
None of these
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Question # 7
Multiplicative inverse of -i is:
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i
-i
1
-1
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Question # 8
Rational numbers are:
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repeating decimals
terminatingdecimals
periodicdecimals
all of these
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Question # 9
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i
0
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Question # 10
If z = x + i y = r (cos Θ + i sin Θ), then arg z is:
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tan Θ
cos
2
Θ + sin
2
Θ
r
Θ
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Question # 11
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Question # 12
Product of a complex number and its conjugate is:
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a real number
irrationalnumber
a complexnumber
either real number or complexnumber
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Question # 13
Which of the following is correct:
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2 + 7i > 10 + i
1 + i > 1 - i
4 + 3i > 1 + 3i
none of these
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Question # 14
Conjugate of a + i b is:
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-a + ib
a + ib
-a - ib
a - ib
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Question # 15
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0
i
-i
1
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Question # 16
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integer
rationalnumber
irrationalnumber
naturalnumber
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Question # 17
Modulus of 15 i + 20 is:
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20
15
25
none of the above
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Question # 18
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rationalnumber
irrationalnumber
naturalnumber
wholenumber
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Question # 19
If z
1
= 4i and z
2
= 3 - 9i, then z
1
+ z
2
=
Choose an answer
3 - 5i
3i - 5
7 - 9i
3 + 5i
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Question # 20
Conjugate of complex number (-a, -b) is:
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(-a, b)
(-a, -b)
(a, -b)
none of these
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Question # 21
The set of all rational numbers between 2, 3 is:
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an empty set
an infinite set
a finite set
a power set
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