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Online Tests
11th Class Part 1 Mathematics Chapter 1 Test Online MCQs With Answers
Question # 1
The additive inverse of a real number is a:
Choose an answer
0
-a
a
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Question # 2
Conjugate of -3 -2 i is:
Choose an answer
3 + 2i
-3 + 2i
2 + 3i
-2 + 3i
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Question # 3
Modulus of 15 i + 20 is:
Choose an answer
20
15
25
none of the above
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Question # 4
The set of negative integers is closed with respect to:
Choose an answer
addition
multiplication
both (a) and (b)
subtraction
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Question # 5
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 # 6
If z = x + i y = r (cos Θ + i sin Θ), then arg z is:
Choose an answer
tan Θ
cos
2
Θ + sin
2
Θ
r
Θ
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Question # 7
Choose an answer
rationalnumber
irrationalnumber
naturalnumber
wholenumber
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Question # 8
The real part of the complex number a + bi is:
Choose an answer
b
-b
a
-a
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Question # 9
The set of all rational numbers between 2, 3 is:
Choose an answer
an empty set
an infinite set
a finite set
a power set
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Question # 10
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additive property
multiplicative inverseproperty
transitive property
negative property
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Question # 11
The multiplicative identity of real numbers is:
Choose an answer
0
1
2
-1
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Question # 12
i
2
+ 1 =
Choose an answer
-1
0
i
1
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Question # 13
Multiplicative inverse of -i is:
Choose an answer
i
-i
1
-1
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Question # 14
Choose an answer
integer
rationalnumber
irrationalnumber
naturalnumber
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Question # 15
Conjugate of a- i b is:
Choose an answer
b + ia
-a + ib
-a - ib
a + ib
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Question # 16
The imaginary part of the complex number a + bi is:
Choose an answer
a
b
bi
none of these
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Question # 17
Choose an answer
Reflexive property
Symmetricproperty
Transitiveproperty
Trichotomyproperty
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Question # 18
Choose an answer
closure property w.r.t multiplication
commutativeproperty w.r.t multiplication
associativeproperty w.r.t multiplication
trichotomy property
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Question # 19
Product of a complex number and its conjugate is:
Choose an answer
a real number
irrationalnumber
a complexnumber
either real number or complexnumber
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Question # 20
Zero is:
Choose an answer
a natural number
a whole number
a positive integer
a negativeinteger
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Question # 21
Choose an answer
x = 0, y = 0
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