Question # 1

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real part of z

imaginary part of z

conjugate of z

modulus of z

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Multiplication property

Additive property

Trichotomy property

Transitive property of inequality

i =

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√1

√2

√-2

√-1

The set of rational number is represented by

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W

R

Q'

Q

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A complex number

A rational number

A natural number

An irrational number

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Commutative property of addition

Closure property of addition

Additive inverse

Associative property w.r.t. to addition

The square root of 2i - 20i is

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±(5 - 2i)

±(5+ 2i)

(5 - 2i)

None of these

If z=(x,y) then z has no multiplicative inverse when

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x ≠ 0, y = 0

x = 0, y = 0

x = 0, y ≠ 0

None of these

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-8

8

8i

32

The set of rationals numbers between 0 and I is

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Finite

Null set

Infinite

None of these

The symbol of irrational is

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W

N

Q

Q'

Associative law of multiplication

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ab = ba

a(bc) = (ab) c

a(b+c) = ab + ac

(a + b)c = ac + bc

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Additive property in R

Multiplication property in R

Cancellation property in R

Distribution property in R

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Closure law of addition

Associative law of addition

Commutative law of multiplication

Associative law of multiplication

A subset of set of complex number whose elements are of the form (a,0) is called

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Real number

Complex number

Rational number

Irrational number

1/3 is ______

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A prime number

An integer

A rational number

An irrational number

Which element is the additive inverse of (a, b) in Complex numbers?

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(a, 0)

(0, b)

(a, b)

(-a, -b)

What is the conjugate of -6 -i?

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-6 +i

6+i

-6 -i

6 -i

√23 is

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A rational number

A irrational number

An even integer

A factor of 36

Any whole number can be written as a product of factors which are

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Even number

Odd numbers

Prime number

Rational number

Geometrically the modulus of a complex number represents its distance from the

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Point (1,0)

Point (0,1)

Point (1,1)

Point (0,0)

The value of i⁴ⁿ⁺¹

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1

-1

i

i²

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1

-1

A non-terminating, non-recurring decimal represent

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A natural number

A rational number

An irrational number

A prime number

1/3 is a decimal

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Recurring

Terminating

Non-terminating

None of the above

1.4142135... is ______

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A natural number

A rational number

A prime number

An irrational number

√x = ______ if is a prime number

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Rational no

Natural no

Irrational no

Complex no

i¹⁰¹ =

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i

i²

-i

-1

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A natural number

A rational number

An irrational number

A whole number

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real number

complex number

rational number

irrational number

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ECAT Mathematics Chapter 1 Number System Online Test MCQs With Answers

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