# MCQs For NCERT Class 9 Mathematics Chapter 1 Number System

Please refer to the MCQ Questions for Class 9 Mathematics Chapter 1 Number System with Answers. The following Polynomials Class 9 Mathematics MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 9. Our experts have designed MCQ Questions for Class 9 Mathematics with Answers for all chapters in your NCERT Class 9 Mathematics book.

## Number System Class 9 MCQ Questions with Answers

See below Number System Class 9 Mathematics MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Choose the correct answer from the given four options in the following questions:

Question. Every rational number is
(a) a natural number
(b) an integer
(c) a real number
(d) a whole number

C

Question. Decimal representation of a rational number cannot be
(a) terminating
(b) non-terminating
(c) non-terminating repeating
(d) non-terminating non-repeating

D

Question. π is an irrational number because its decimal expansion is
(a) terminating
(b) non-terminating
(c) non-terminating repeating
(d) non-terminating non-repeating

D

Question. Every point on a number line represents
(a) a unique real number
(b) a natural number
(c) a rational number
(d) an irrational number

A

Question. Which of the following is a rational number?
(a) −2/3
(b) −1/√5
(c) 13/√5
(d) √2/3

A

Question. Which of the following is irrational?
(a) 0.15

(d) 0.5015001 500015…

D

Question. A rational number equivalent to 3/17 is
(a) 6/17
(b) 6/34
(c) 17/3
(d) 3/34

B

Question. A rational number between 2 and 3 is
(a) 2.010010001…
(b) √6
(c) 5/2
(d) 42−√2

C

Question. Four rational numbers between 3 and 4 are
(a) 3.1, 3.2, 3.8, 3.9
(b) 3/5,4/5,1,6/5
(c) 3.1, 3.2, 4.1, 4.2
(d) 13/5,14/5,16/5,17/5

A

Question. The smallest irrational number to be added to 3 + √2 to get a rational number is
(a) –√2
(b) 3 – √2
(c) √2 – 3
(d) √3+2

A

Question. The value of 0.3̅ . in the form pq, where p and q are integers and q ≠ 0 is
(a) 33/100
(b) 3/10
(c) 1/3
(d) 3/100

C

Question.

(a) 8/25
(b) 29/90
(c) 32/99
(d) 32/199

B

Question.

(a) 437/9999
(b) 394/999
(c) 434/99
(d) 437/999

D

Question. Simplest rationalisation factor of 3√40 is
(a) 3√25
(b) 3√5
(c) √40
(d) √5

A

Question. 2√5+ 5 is equal to
(a) 2√10
(b) 10
(c) 3√5
(d) 3√10

C

Question. The perimeter of the given figure is
(a) 60√5
(b) 12√5
(c) 27√5
(d) 32√5

B

Question.

(a) √5+ √2 +5√11
(b) √5/2+ 2√2 +√11
(c) √5+ √2 +6√11
(d) √5+ 2√2 +5√11

A

Question. The product of 3√7 and √5 is
(a) 3√35
(b) 6√35
(c) 6√6125
(d) 6√1225

C

Question.The product of (16)√18 and (1/3)√18 is
(a) 1
(b) 112
(c) 13
(d) √2

A

Question. √5×√7×√15×√21 in simplified form is
(a) √105
(b) √210
(c) 105
(d) 210

C

Question. (3+√3)(3−√3) on simplification becomes equal to
(a) 18
(b) 2√3
(c) 6
(d) 9

C

Question. The value of (3+√5)2 (3-√5)2 is
(a) 15
(b) 16
(c) 4
(d) 14

B

Question. 3√250 ÷3√10  in simplified form is equal to
(a) 3√25
(b) 5
(c) √5
(d) 3√2500

A

Question.

(a) 10/3√5
(b) 30√5
(c) 10/√5
(d) 12√5

C

Question.

(a) 1/√3
(b) 2/√3
(c) 2√3
(d) 6√3

A

Question.

(a) 2
(b) 0
(c) 9/5
(d) 1/5

A

Question.

(a) 1
(b) 2
(c) 2/3
(d) 3/2

D

Question.

(a) 19
(b) 9
(c) – 3
(d) 13

Question. (256/625)-3/4 in its simplified form is equal to
(a) 25/64
(b) 64/125
(c) 125/64
(d) 64/25

C

Question. (32)1/5  ×(125)-1/3 in its simplified form is equal to
(a) 1625
(b) 45
(c) 25
(d) 225

C

Question.

(a) 5/3
(b) – 5/3
(c) 3/5
(d) −3/5

B

Question. The value of   [8-4/3 ÷ 2-2]1/2  is
(a) 1/2
(b) 2
(c) 1/4
(d) 4

A

Question.

(a) x1/24
(b) x1/6
(c) x1/12
(d) x1/20

B

Question. If x = 2 and y = 3, then the value of xy + yx is
(a) 15
(b) 17
(c) 19
(d) 21

B

Question. If x = 9-√5−, then x+1/x is equal to
(a) 85
(b) – 8√5
(c) 18
(d) 81

C

Question. Which of the following is equal to a?   c

Question. Decimal representation of −17/8 is
(a) – 2.125
(b) – 2.225
(c) 2.125
(d) – 1.175

A

Question.

(a) 0.704125
(b) 0.714285
(c) 0.77132
(d) 0.714381

B

Question. If √3 = 1.732, then the value of 1/√3 approximately is
(a) 0.866
(b) 0.433
(c) 0.288
(d) 0.577