Concept-wise Practice

rational irrational MCQ Questions for Class 10

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Practice Questions

23 questions tagged with rational irrational.

यदि \(x=\frac{17}{10}\) और \(y=\sqrt{3}\), तो संख्या रेखा पर कौन बाएँ है?

If \(x=\frac{17}{10}\) and \(y=\sqrt{3}\), which is to the left on the number line?

Explanation opens after your attempt
Correct Answer

A. (x)

Step 1

Concept

(x=1.7) and \(\sqrt{3}\approx1.732\), so (x<y). The point to the left has the smaller value.

Step 2

Why this answer is correct

The correct answer is A. (x). (x=1.7) and \(\sqrt{3}\approx1.732\), so (x<y). The point to the left has the smaller value.

Step 3

Exam Tip

(x=1.7) और \(\sqrt{3}\approx1.732\), इसलिए (x<y)। बाएँ बिंदु की संख्या छोटी होती है।

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यदि (r) शून्येतर परिमेय संख्या है और (s) अपरिमेय संख्या है, तो \(\frac{s}{r}\) किस प्रकार की संख्या होगी?

If (r) is a non-zero rational number and (s) is an irrational number, what type of number is \(\frac{s}{r}\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेयIrrational

Step 1

Concept

If \(\frac{s}{r}\) were rational then \(s=r\cdot\frac{s}{r}\) would be rational which is false. In exams check the non-zero condition.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय / Irrational. If \(\frac{s}{r}\) were rational then \(s=r\cdot\frac{s}{r}\) would be rational which is false. In exams check the non-zero condition.

Step 3

Exam Tip

यदि \(\frac{s}{r}\) परिमेय हो तो \(s=r\cdot\frac{s}{r}\) परिमेय हो जाएगा जो गलत है। परीक्षा में शून्येतर शर्त जरूर देखें।

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कौन सा विकल्प \(\frac{2}{5}+\sqrt{17}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(\frac{2}{5}+\sqrt{17}\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

\(\frac{2}{5}\) is rational and \(\sqrt{17}\) is irrational. Their sum is irrational.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. \(\frac{2}{5}\) is rational and \(\sqrt{17}\) is irrational. Their sum is irrational.

Step 3

Exam Tip

\(\frac{2}{5}\) परिमेय है और \(\sqrt{17}\) अपरिमेय है। उनका योग अपरिमेय होता है।

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कौन सा विकल्प \(\sqrt{361}\) और \(\sqrt{362}\) की प्रकृति सही बताता है?

Which option gives the correct nature of \(\sqrt{361}\) and \(\sqrt{362}\)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{361}\) परिमेय है और \(\sqrt{362}\) अपरिमेय है\(\sqrt{361}\) is rational and \(\sqrt{362}\) is irrational

Step 1

Concept

\(\sqrt{361}=19\), but (362) is not a perfect square. So the first root is rational and the second is irrational.

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{361}\) परिमेय है और \(\sqrt{362}\) अपरिमेय है / \(\sqrt{361}\) is rational and \(\sqrt{362}\) is irrational. \(\sqrt{361}=19\), but (362) is not a perfect square. So the first root is rational and the second is irrational.

Step 3

Exam Tip

\(\sqrt{361}=19\) है लेकिन (362) पूर्ण वर्ग नहीं है। इसलिए पहली जड़ परिमेय और दूसरी अपरिमेय है।

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कौन सा विकल्प \(\frac{1}{3}+\sqrt{11}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(\frac{1}{3}+\sqrt{11}\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

\(\frac{1}{3}\) is rational and \(\sqrt{11}\) is irrational. Their sum is irrational.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. \(\frac{1}{3}\) is rational and \(\sqrt{11}\) is irrational. Their sum is irrational.

Step 3

Exam Tip

\(\frac{1}{3}\) परिमेय है और \(\sqrt{11}\) अपरिमेय है। उनका योग अपरिमेय होता है।

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कौन सा विकल्प \(\sqrt{289}\) और \(\sqrt{290}\) की प्रकृति सही बताता है?

Which option gives the correct nature of \(\sqrt{289}\) and \(\sqrt{290}\)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{289}\) परिमेय है और \(\sqrt{290}\) अपरिमेय है\(\sqrt{289}\) is rational and \(\sqrt{290}\) is irrational

Step 1

Concept

\(\sqrt{289}=17\), but (290) is not a perfect square. So the first root is rational and the second is irrational.

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{289}\) परिमेय है और \(\sqrt{290}\) अपरिमेय है / \(\sqrt{289}\) is rational and \(\sqrt{290}\) is irrational. \(\sqrt{289}=17\), but (290) is not a perfect square. So the first root is rational and the second is irrational.

Step 3

Exam Tip

\(\sqrt{289}=17\) है लेकिन (290) पूर्ण वर्ग नहीं है। इसलिए पहली जड़ परिमेय और दूसरी अपरिमेय है।

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कौन सा विकल्प \(4+\sqrt{13}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(4+\sqrt{13}\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

(4) is rational and \(\sqrt{13}\) is irrational. The sum of a rational and an irrational number is irrational.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. (4) is rational and \(\sqrt{13}\) is irrational. The sum of a rational and an irrational number is irrational.

Step 3

Exam Tip

(4) परिमेय है और \(\sqrt{13}\) अपरिमेय है। परिमेय और अपरिमेय का योग अपरिमेय होता है।

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कौन सा विकल्प \( \frac{1}{2}+\sqrt{2}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \( \frac{1}{2}+\sqrt{2}\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

\(\frac{1}{2}\) is rational and \(\sqrt{2}\) is irrational. Their sum is irrational.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. \(\frac{1}{2}\) is rational and \(\sqrt{2}\) is irrational. Their sum is irrational.

Step 3

Exam Tip

\(\frac{1}{2}\) परिमेय है और \(\sqrt{2}\) अपरिमेय है। उनका योग अपरिमेय होता है।

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कौन सा विकल्प \(\sqrt{225}\) और \(\sqrt{226}\) की प्रकृति सही बताता है?

Which option gives the correct nature of \(\sqrt{225}\) and \(\sqrt{226}\)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{225}\) परिमेय है और \(\sqrt{226}\) अपरिमेय है\(\sqrt{225}\) is rational and \(\sqrt{226}\) is irrational

Step 1

Concept

\(\sqrt{225}=15\), but (226) is not a perfect square. So the first root is rational and the second is irrational.

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{225}\) परिमेय है और \(\sqrt{226}\) अपरिमेय है / \(\sqrt{225}\) is rational and \(\sqrt{226}\) is irrational. \(\sqrt{225}=15\), but (226) is not a perfect square. So the first root is rational and the second is irrational.

Step 3

Exam Tip

\(\sqrt{225}=15\) है लेकिन (226) पूर्ण वर्ग नहीं है। इसलिए पहली जड़ परिमेय और दूसरी अपरिमेय है।

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कौन सा कथन \(3+\sqrt{7}\) के लिए सही है?

Which statement is correct for \(3+\sqrt{7}\)?

Explanation opens after your attempt
Correct Answer

A. यह अपरिमेय हैIt is irrational

Step 1

Concept

Adding irrational \(\sqrt{7}\) to rational (3) gives an irrational result. In exams identify roots of non perfect squares.

Step 2

Why this answer is correct

The correct answer is A. यह अपरिमेय है / It is irrational. Adding irrational \(\sqrt{7}\) to rational (3) gives an irrational result. In exams identify roots of non perfect squares.

Step 3

Exam Tip

परिमेय (3) में अपरिमेय \(\sqrt{7}\) जोड़ने पर परिणाम अपरिमेय होता है। परीक्षा में पूर्ण वर्ग न होने वाली जड़ को पहचानें।

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कौन सा विकल्प \(\sqrt{256}\) और \(\sqrt{257}\) की सही प्रकृति बताता है?

Which option gives the correct nature of \(\sqrt{256}\) and \(\sqrt{257}\)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{256}\) परिमेय है और \(\sqrt{257}\) अपरिमेय है\(\sqrt{256}\) is rational and \(\sqrt{257}\) is irrational

Step 1

Concept

\(\sqrt{256}=16\), but (257) is not a perfect square. So the first root is rational and the second is irrational.

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{256}\) परिमेय है और \(\sqrt{257}\) अपरिमेय है / \(\sqrt{256}\) is rational and \(\sqrt{257}\) is irrational. \(\sqrt{256}=16\), but (257) is not a perfect square. So the first root is rational and the second is irrational.

Step 3

Exam Tip

\(\sqrt{256}=16\) है लेकिन (257) पूर्ण वर्ग नहीं है। इसलिए पहली जड़ परिमेय और दूसरी अपरिमेय है।

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कौन सा विकल्प \(3-\sqrt{11}\) के बारे में सही है?

Which option is correct about \(3-\sqrt{11}\)?

Explanation opens after your attempt
Correct Answer

A. यह अपरिमेय संख्या हैIt is an irrational number

Step 1

Concept

(3) is rational and \(\sqrt{11}\) is irrational. Their difference is irrational.

Step 2

Why this answer is correct

The correct answer is A. यह अपरिमेय संख्या है / It is an irrational number. (3) is rational and \(\sqrt{11}\) is irrational. Their difference is irrational.

Step 3

Exam Tip

(3) परिमेय है और \(\sqrt{11}\) अपरिमेय है। उनका अंतर अपरिमेय होता है।

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कौन सा विकल्प परिमेय संख्या को अपरिमेय संख्या से जोड़ने पर बना है?

Which option is formed by adding a rational number to an irrational number?

Explanation opens after your attempt
Correct Answer

A. \(\frac{3}{5}+\sqrt{10}\)

Step 1

Concept

\(\frac{3}{5}\) is rational and \(\sqrt{10}\) is irrational. This sum will be irrational.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{3}{5}+\sqrt{10}\). \(\frac{3}{5}\) is rational and \(\sqrt{10}\) is irrational. This sum will be irrational.

Step 3

Exam Tip

\(\frac{3}{5}\) परिमेय है और \(\sqrt{10}\) अपरिमेय है। यह योग अपरिमेय होगा।

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यदि (a) परिमेय संख्या है और (b) अपरिमेय संख्या है तो (a-b) किस प्रकार की संख्या होगी?

If (a) is rational and (b) is irrational then what type of number is (a-b)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

The difference of a rational and an irrational number is irrational. This property helps identify mixed expressions.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. The difference of a rational and an irrational number is irrational. This property helps identify mixed expressions.

Step 3

Exam Tip

परिमेय और अपरिमेय का अंतर अपरिमेय होता है। यह गुण गैर मिश्रित संख्याओं को पहचानने में मदद करता है।

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कौन सा विकल्प परिमेय और अपरिमेय संख्या का योग है जो अपरिमेय है?

Which option is the sum of a rational and an irrational number that is irrational?

Explanation opens after your attempt
Correct Answer

A. \(9+\sqrt{17}\)

Step 1

Concept

(9) is rational and \(\sqrt{17}\) is irrational. Such a sum is irrational.

Step 2

Why this answer is correct

The correct answer is A. \(9+\sqrt{17}\). (9) is rational and \(\sqrt{17}\) is irrational. Such a sum is irrational.

Step 3

Exam Tip

(9) परिमेय है और \(\sqrt{17}\) अपरिमेय है। ऐसा योग अपरिमेय होता है।

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\(6+\sqrt{11}\) किस प्रकार की संख्या है?

What type of number is \(6+\sqrt{11}\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

Adding irrational \(\sqrt{11}\) to rational (6) gives an irrational number. Do not mistake the root for a perfect square.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. Adding irrational \(\sqrt{11}\) to rational (6) gives an irrational number. Do not mistake the root for a perfect square.

Step 3

Exam Tip

परिमेय संख्या (6) में अपरिमेय \(\sqrt{11}\) जोड़ने पर परिणाम अपरिमेय रहता है। जड़ को पूर्ण वर्ग समझने की गलती न करें।

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वास्तविक संख्याओं के बारे में कौन सा कथन सही है?

Which statement about real numbers is correct?

Explanation opens after your attempt
Correct Answer

A. इनमें परिमेय और अपरिमेय दोनों शामिल हैंThey include both rational and irrational numbers

Step 1

Concept

Real numbers form the large set of rational and irrational numbers. They can be represented on the number line.

Step 2

Why this answer is correct

The correct answer is A. इनमें परिमेय और अपरिमेय दोनों शामिल हैं / They include both rational and irrational numbers. Real numbers form the large set of rational and irrational numbers. They can be represented on the number line.

Step 3

Exam Tip

वास्तविक संख्याएँ परिमेय और अपरिमेय संख्याओं का बड़ा समुच्चय हैं। संख्या रेखा पर इन्हें दर्शाया जा सकता है।

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कौन सा विकल्प परिमेय और अपरिमेय संख्या का योग दिखाता है?

Which option shows the sum of a rational and an irrational number?

Explanation opens after your attempt
Correct Answer

A. \(4+\sqrt{7}\)

Step 1

Concept

(4) is rational and \(\sqrt{7}\) is irrational. Their sum will be irrational.

Step 2

Why this answer is correct

The correct answer is A. \(4+\sqrt{7}\). (4) is rational and \(\sqrt{7}\) is irrational. Their sum will be irrational.

Step 3

Exam Tip

(4) परिमेय है और \(\sqrt{7}\) अपरिमेय है। उनका योग अपरिमेय होगा।

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कौन-सा दशमलव परिमेय नहीं हो सकता?

Which decimal cannot be rational?

Explanation opens after your attempt
Correct Answer

A. \(2.01001000100001\ldots\)

Step 1

Concept

A rational number has either a terminating decimal or a non-terminating recurring decimal.

Step 2

Why this answer is correct

\(2.01001000100001\ldots\) has no fixed repeating block. So it cannot be rational.

Step 3

Exam Tip

Decide by checking repetition, not merely by seeing a long decimal. चरण 1: परिमेय संख्या का दशमलव या तो सांत होता है या असांत आवर्ती। चरण 2: \(2.01001000100001\ldots\) में कोई स्थिर आवर्ती खंड नहीं है। इसलिए यह परिमेय नहीं हो सकता। चरण 3: लंबा दशमलव देखकर नहीं, पुनरावृत्ति देखकर निर्णय लें।

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यदि (r) परिमेय है और (s) अपरिमेय है तो (r+s=s) कब संभव है?

If (r) is rational and (s) is irrational then when is (r+s=s) possible?

Explanation opens after your attempt
Correct Answer

A. जब (r=0)When (r=0)

Step 1

Concept

From (r+s=s), subtract (s) from both sides to get (r=0).

Step 2

Why this answer is correct

(0) is rational, so the condition is possible.

Step 3

Exam Tip

Form a simple equation before judging number types. चरण 1: (r+s=s) से दोनों ओर (s) घटाने पर (r=0) मिलता है। चरण 2: (0) परिमेय है इसलिए स्थिति संभव है। चरण 3: सरल समीकरण बनाकर संख्या के प्रकार की जांच करें।

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निम्न में से कौन-सा व्यंजक परिमेय नहीं है?

Which of the following expressions is not rational?

Explanation opens after your attempt
Correct Answer

C. \(\sqrt{6}+\sqrt{24}\)

Step 1

Concept

Simplify each option first.

Step 2

Why this answer is correct

\(\sqrt{6}+\sqrt{24}=\sqrt{6}+2\sqrt{6}=3\sqrt{6}\), which is irrational.

Step 3

Exam Tip

Radicals may cancel in multiplication, but not always in addition. चरण 1: पहले प्रत्येक विकल्प को सरल करें। चरण 2: \(\sqrt{6}+\sqrt{24}=\sqrt{6}+2\sqrt{6}=3\sqrt{6}\), जो अपरिमेय है। चरण 3: गुणन में मूल कट सकते हैं, पर योग में हमेशा ऐसा नहीं होता।

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यदि \(\frac{1}{x}\) परिमेय है और \(x\neq0\), तो (x) के अपरिमेय होने के बारे में सही निष्कर्ष क्या है?

If \(\frac{1}{x}\) is rational and \(x\neq0\), what is the correct conclusion about (x) being irrational?

Explanation opens after your attempt
Correct Answer

B. (x) अवश्य परिमेय है(x) must be rational

Step 1

Concept

If \(\frac{1}{x}\) is rational and non-zero, then its reciprocal is also rational.

Step 2

Why this answer is correct

Therefore (x) is rational, not irrational.

Step 3

Exam Tip

In reciprocal questions, always check the non-zero condition. चरण 1: यदि \(\frac{1}{x}\) परिमेय है और शून्य नहीं है, तो उसका व्युत्क्रम भी परिमेय होगा। चरण 2: इसलिए (x) परिमेय होगा, अपरिमेय नहीं। चरण 3: व्युत्क्रम वाले प्रश्नों में शून्य की शर्त जरूर देखें।

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निम्न में से कौन-सा परिमेय और अपरिमेय संख्या के बीच अंतर को सही बताता है?

Which option correctly states the difference between rational and irrational numbers?

Explanation opens after your attempt
Correct Answer

C. परिमेय संख्या \(\frac{p}{q}\) के रूप में लिखी जा सकती है, जहाँ \(q\neq0\)Rational numbers can be written as \(\frac{p}{q}\), where \(q\neq0\)

Step 1

Concept

A rational number can be written as \(\frac{p}{q}\), where (p,q) are integers and \(q\neq0\).

Step 2

Why this answer is correct

An irrational number cannot be written in that form.

Step 3

Exam Tip

In definition questions, always check the condition \(q\neq0\). चरण 1: परिमेय संख्या वह है जिसे \(\frac{p}{q}\) के रूप में लिखा जा सके, जहाँ (p,q) पूर्णांक और \(q\neq0\) हों। चरण 2: अपरिमेय संख्या ऐसे रूप में नहीं लिखी जा सकती। चरण 3: परिभाषा के प्रश्न में \(q\neq0\) अवश्य देखें।

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