Mathematics MCQs Chapter 1 Class 11

Created on January 19, 2022

Chapter 1: Number Systems

1 / 27

Every recurring decimal is

an irrational number

a rational number

a whole number

a prime number

2 / 27

A recurring decimal represents_____

None of these

Real number

Natural number

Rational number

3 / 27

The additive identity in set of complex number is

(1,1)

(1,0)

(0,1)

(0,0)

4 / 27

The multiplicative identity of complex number is

(1,1)

(0,1)

(0,0)

(1,0)

5 / 27

√3 is __________

Rational

Integer

Prime

Irrational

6 / 27

A decimal which has a finite numbers of digits in its decimal part is called decimal.

(b) (c) (d)

Recurring

Non recurring

Terminating

Non-Terminating

7 / 27

The product of two conjugate complex numbers is

not defined

may be an irrational number

an imaginary number

A real number

8 / 27

For any complex number ?, it is always true that |?| is equal to:

| − ?|

all of these

| − ?|

|?|

9 / 27

?^?? equals:

-1

?

– ?

1

10 / 27

The multiplicative inverse of (?, −?) is:

( 4/65, −7/65 )

(− 4/65, −7/65)

(− 4/65,7/65 )

(4/65,7/65 )

11 / 27

(−?)^−??/? =

?

1

-1

– ?

12 / 27

The numbers which can be written in the form of ?/? , ?, ? ∈ ? , ? ≠ ? are :

Complex number

Irrational number

Whole number

Rational number

13 / 27

(?, ?)(?, ?) =

8?

-15

−8?

15

14 / 27

Golden rule of fraction is that for ? ≠ ?, ?/? =

??/?

??/??

??/b

15 / 27

If ? is any non-zero real number, then multiplicative inverse is

not defined

1/?

– ?

-1/?

16 / 27

??/? is

Rational

a whole number

an integer

Irrational

17 / 27

Multiplicative inverse of ′?′ is

1

any real number

0

not defined

18 / 27

. If ? < ? then

? < ?

1/? > 1/?

? − ? > 0

1/? < 1/?

19 / 27

The set {?, −?} possesses closure property ?. ?. ?

÷

×

+

−

20 / 27

For any complex number ?, it is always true that |?| is equal to:

|?|

all of these

| − ?|

21 / 27

For all ? ∈ ? , ? = ? is …. Property.

Reflexive

Trichotomy

Transitive

Symmetric

22 / 27

A decimal which has a finite numbers of digits in its decimal part is called______ decimal.

Terminating

Non-Terminating

Recurring

Non recurring

23 / 27

For all ?, ? ∈ ? , ? = ? ⟹ ? = ? is called….. property.

Symmetric

Trichotomy

Transitive

Reflexive

24 / 27

The additive identity in set of complex number is

(1,0)

(1,1)

(0,0)

(0,1)

25 / 27

The multiplicative identity of complex number is

(0,1)

(1,1)

(0,0)

(1,0)

26 / 27

The modulus of ? = ? + ?? is

√(? + ?)

? − ?

√(?2 + ?2)

√(?2 − ?2)

27 / 27

? is

Rational

Irrational

Natural number

None

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Mathematics MCQs Chapter 1 Class 11

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The additive identity in set of complex number is

A decimal which has a finite numbers of digits in its decimal part is called decimal.

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