If n is a natural number then \(\sqrt { n } \) is ________.

(a)

always a natural number

(b)

always an irrational number

(c)

always a rational number

(d)

may be rational or irrational

Which one of the following, regarding sum of two irrational numbers, is true?

(a)

always an irrational number

(b)

may be a rational or irrational number

(c)

always a rational number

(d)

always an integer.

Which one of the following is an irrational number.

(a)

\(\sqrt { 25 } \)

(b)

\(\sqrt { \frac { 9 }{ 4 } } \)

(c)

\(\frac { 7 }{ 11 } \)

(d)

\(\pi\)

The smallest rational number by which \(\frac { 1 }{ 3 } \)  should be multiplied so that its decimal expansion terminates after one place of decimal is   ________.

(a)

\(\frac { 1 }{ 10 } \)

(b)

\(\frac { 3 }{ 10 } \)

(c)

3

(d)

30

The value of  \(0.\bar { 23 } +0.\bar { 22 } \) is ____________

(a)

\(0.\bar { 43 } \)

(b)

0.45

(c)

\(0.4\bar { 5 } \)

(d)

\(0.\bar { 45 } \)

Which one of the following has terminating decimal expansion?

(a)

\(\frac { 7 }{ 9 } \)

(b)

\(\frac { 8 }{ 15 } \)

(c)

\(\frac { 1 }{ 2 } \)

(d)

\(\frac { 5 }{ 32 } \)

Irrational number has a________________ .

(a)

terminating decimal

(b)

no decimal part

(c)

non-terminating and recurring decimal

(d)

non-terminating and non-recurring decimal

Which of the following are not rational numbers?

(a)

\(7\sqrt { 5 } \)

(b)

\(\frac { 7 }{ \sqrt { 5 } } \)

(c)

\(\sqrt { 36 } -9\)

(d)

\(\pi +2\)

The rational number lying between \(\frac { 1 }{ 5 } \) and \(\frac { 1 }{ 2 } \) is___________.

(a)

\(\frac { 7 }{ 20 } \)

(b)

\(\frac { 2 }{ 10 } \)

(c)

\(\frac { 2 }{ 7 } \)

(d)

\(\frac { 3 }{ 10 } \)

Which of the following is not an irrational number?

(a)

\(\sqrt { 2 } \)

(b)

\(\sqrt { 5 } \)

(c)

\(\sqrt { 3 } \)

(d)

\(\sqrt { 25 } \)