Concept-wise Practice

rational-result MCQ Questions for Class 10

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Practice Questions

44 questions tagged with rational-result.

Question 31/44 Medium Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 13

निम्नलिखित में से कौन-सा परिणाम परिमेय है?

Which of the following results is rational?

Explanation opens after your attempt
Correct Answer

B. \(\sqrt{2}\times\sqrt{8}\)

Step 1

Concept

\(\sqrt{2}\times\sqrt{8}=\sqrt{16}\).

Step 2

Why this answer is correct

\(\sqrt{16}=4\), which is rational.

Step 3

Exam Tip

The product of two irrational numbers is not always irrational. चरण 1: \(\sqrt{2}\times\sqrt{8}=\sqrt{16}\) होता है। चरण 2: \(\sqrt{16}=4\), जो परिमेय संख्या है। चरण 3: दो अपरिमेय संख्याओं का गुणनफल हमेशा अपरिमेय नहीं होता।

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Question 32/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 15

\(\sqrt{6}\times\sqrt{54}\) का मान क्या है?

What is the value of \(\sqrt{6}\times\sqrt{54}\)?

Explanation opens after your attempt
Correct Answer

A. (18)

Step 1

Concept

\(\sqrt{6}\times\sqrt{54}=\sqrt{324}\).

Step 2

Why this answer is correct

\(\sqrt{324}=18\), so the result is rational.

Step 3

Exam Tip

After multiplication, check whether the inside number has become a perfect square. चरण 1: \(\sqrt{6}\times\sqrt{54}=\sqrt{324}\)। चरण 2: \(\sqrt{324}=18\), इसलिए परिणाम परिमेय है। चरण 3: गुणन के बाद अंदर की संख्या पूर्ण वर्ग बन सकती है, इसे जरूर जांचें।

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Question 33/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 15

कौन-सा विकल्प दो अपरिमेय संख्याओं का ऐसा गुणनफल है जो परिमेय बनता है?

Which option is a product of two irrational numbers that becomes rational?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{5}\times\sqrt{5}\)

Step 1

Concept

\(\sqrt{5}\) is irrational.

Step 2

Why this answer is correct

\(\sqrt{5}\times\sqrt{5}=5\), which is rational.

Step 3

Exam Tip

The product of two irrational numbers is not always irrational. चरण 1: \(\sqrt{5}\) अपरिमेय है। चरण 2: \(\sqrt{5}\times\sqrt{5}=5\), जो परिमेय है। चरण 3: दो अपरिमेय संख्याओं का गुणनफल हमेशा अपरिमेय नहीं होता।

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Question 34/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 15

\(\sqrt{7}\times\sqrt{28}\) का मान क्या होगा?

What is the value of \(\sqrt{7}\times\sqrt{28}\)?

Explanation opens after your attempt
Correct Answer

A. (14)

Step 1

Concept

\(\sqrt{7}\times\sqrt{28}=\sqrt{196}\).

Step 2

Why this answer is correct

\(\sqrt{196}=14\), so the value is rational.

Step 3

Exam Tip

When multiplying square roots, multiply the numbers inside. चरण 1: \(\sqrt{7}\times\sqrt{28}=\sqrt{196}\)। चरण 2: \(\sqrt{196}=14\), इसलिए मान परिमेय है। चरण 3: वर्गमूलों के गुणन में अंदर की संख्याएँ गुणा करें।

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Question 35/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 15

\(\sqrt{3}\times\sqrt{75}\) का मान क्या है?

What is the value of \(\sqrt{3}\times\sqrt{75}\)?

Explanation opens after your attempt
Correct Answer

A. (15)

Step 1

Concept

\(\sqrt{3}\times\sqrt{75}=\sqrt{225}\).

Step 2

Why this answer is correct

\(\sqrt{225}=15\), so the result is rational.

Step 3

Exam Tip

If the number inside becomes a perfect square after multiplication, the answer can be rational. चरण 1: \(\sqrt{3}\times\sqrt{75}=\sqrt{225}\)। चरण 2: \(\sqrt{225}=15\), इसलिए परिणाम परिमेय है। चरण 3: गुणन के बाद यदि अंदर की संख्या पूर्ण वर्ग बन जाए, तो उत्तर परिमेय हो सकता है।

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Question 36/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 15

\(\sqrt{2}\times\sqrt{50}\) का मान क्या है?

What is the value of \(\sqrt{2}\times\sqrt{50}\)?

Explanation opens after your attempt
Correct Answer

B. (10)

Step 1

Concept

In multiplication of square roots, multiply the numbers inside.

Step 2

Why this answer is correct

\(\sqrt{2}\times\sqrt{50}=\sqrt{100}=10\).

Step 3

Exam Tip

The product of two irrational numbers can sometimes be rational. चरण 1: वर्गमूलों के गुणन में अंदर की संख्याएँ गुणा करें। चरण 2: \(\sqrt{2}\times\sqrt{50}=\sqrt{100}=10\)। चरण 3: दो अपरिमेय संख्याओं का गुणनफल कभी-कभी परिमेय हो सकता है।

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Question 37/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 14

कौन-सा विकल्प दो अपरिमेय संख्याओं का ऐसा गुणनफल दिखाता है जो परिमेय है?

Which option shows a product of two irrational numbers that is rational?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{3}\times\sqrt{3}\)

Step 1

Concept

\(\sqrt{3}\) is irrational.

Step 2

Why this answer is correct

\(\sqrt{3}\times\sqrt{3}=3\), which is rational.

Step 3

Exam Tip

The product of two irrational numbers is not always irrational. चरण 1: \(\sqrt{3}\) अपरिमेय है। चरण 2: \(\sqrt{3}\times\sqrt{3}=3\), जो परिमेय है। चरण 3: दो अपरिमेय संख्याओं का गुणनफल हमेशा अपरिमेय नहीं होता।

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Question 38/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 14

\(\sqrt{5}\times\sqrt{20}\) का मान क्या होगा?

What is the value of \(\sqrt{5}\times\sqrt{20}\)?

Explanation opens after your attempt
Correct Answer

A. (10)

Step 1

Concept

\(\sqrt{5}\times\sqrt{20}=\sqrt{100}\).

Step 2

Why this answer is correct

\(\sqrt{100}=10\), which is rational.

Step 3

Exam Tip

In multiplication, first multiply the numbers inside the roots. चरण 1: \(\sqrt{5}\times\sqrt{20}=\sqrt{100}\)। चरण 2: \(\sqrt{100}=10\), जो परिमेय संख्या है। चरण 3: गुणन में पहले अंदर की संख्याओं का गुणन करें।

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Question 39/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 14

\(\sqrt{2}\) का वर्ग किस प्रकार की संख्या है?

What type of number is the square of \(\sqrt{2}\)?

Explanation opens after your attempt
Correct Answer

B. परिमेयRational

Step 1

Concept

(\(\sqrt{2}\)2=2).

Step 2

Why this answer is correct

(2) is rational because it can be written as \(\frac{2}{1}\).

Step 3

Exam Tip

The square of an irrational number can sometimes be rational. चरण 1: (\(\sqrt{2}\)2=2)। चरण 2: (2) परिमेय संख्या है क्योंकि इसे \(\frac{2}{1}\) लिखा जा सकता है। चरण 3: अपरिमेय संख्या का वर्ग कभी-कभी परिमेय हो सकता है।

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Question 40/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 14

\(\sqrt{2}\times\sqrt{18}\) का मान क्या होगा?

What is the value of \(\sqrt{2}\times\sqrt{18}\)?

Explanation opens after your attempt
Correct Answer

A. (6)

Step 1

Concept

When multiplying square roots, multiply the numbers inside.

Step 2

Why this answer is correct

\(\sqrt{2}\times\sqrt{18}=\sqrt{36}=6\).

Step 3

Exam Tip

The product of two irrational numbers can sometimes be rational. चरण 1: वर्गमूलों के गुणन में अंदर की संख्याएँ गुणा होती हैं। चरण 2: \(\sqrt{2}\times\sqrt{18}=\sqrt{36}=6\)। चरण 3: दो अपरिमेय संख्याओं का गुणनफल कभी-कभी परिमेय हो सकता है।

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Question 41/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 13

\(\sqrt{3}\times\sqrt{12}\) का मान क्या है?

What is the value of \(\sqrt{3}\times\sqrt{12}\)?

Explanation opens after your attempt
Correct Answer

A. (6)

Step 1

Concept

\(\sqrt{3}\times\sqrt{12}=\sqrt{36}\).

Step 2

Why this answer is correct

\(\sqrt{36}=6\), so the result is rational.

Step 3

Exam Tip

Sometimes the product of two irrational numbers can be rational. चरण 1: \(\sqrt{3}\times\sqrt{12}=\sqrt{36}\)। चरण 2: \(\sqrt{36}=6\), इसलिए परिणाम परिमेय है। चरण 3: कभी-कभी दो अपरिमेय संख्याओं का गुणनफल परिमेय हो सकता है।

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Question 42/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 13

\(\sqrt{11}-\sqrt{11}\) का मान किस प्रकार की संख्या है?

What type of number is the value of \(\sqrt{11}-\sqrt{11}\)?

Explanation opens after your attempt
Correct Answer

B. परिमेय संख्याRational number

Step 1

Concept

Subtracting a number from itself gives (0).

Step 2

Why this answer is correct

\(\sqrt{11}-\sqrt{11}=0\), and (0) is rational.

Step 3

Exam Tip

The difference of two irrational numbers is not always irrational. चरण 1: किसी संख्या में से वही संख्या घटाने पर (0) मिलता है। चरण 2: \(\sqrt{11}-\sqrt{11}=0\), और (0) परिमेय है। चरण 3: दो अपरिमेय संख्याओं का अंतर हमेशा अपरिमेय नहीं होता।

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Question 43/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 13

\(\sqrt{2}\times\sqrt{8}\) का मान क्या है?

What is the value of \(\sqrt{2}\times\sqrt{8}\)?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

\(\sqrt{2}\times\sqrt{8}=\sqrt{16}\).

Step 2

Why this answer is correct

\(\sqrt{16}=4\), so the value is rational.

Step 3

Exam Tip

While multiplying square roots, multiply the numbers inside the roots. चरण 1: \(\sqrt{2}\times\sqrt{8}=\sqrt{16}\)। चरण 2: \(\sqrt{16}=4\), इसलिए मान परिमेय है। चरण 3: वर्गमूलों को गुणा करते समय अंदर की संख्याएँ गुणा करें।

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Question 44/44 Easy Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 13

\(\sqrt{5}\times\sqrt{5}\) का मान किस प्रकार की संख्या है?

What type of number is the value of \(\sqrt{5}\times\sqrt{5}\)?

Explanation opens after your attempt
Correct Answer

B. परिमेय संख्याRational number

Step 1

Concept

Multiplying a square root by itself gives the number inside the root.

Step 2

Why this answer is correct

\(\sqrt{5}\times\sqrt{5}=5\), and (5) is rational.

Step 3

Exam Tip

The product of two irrational numbers is not always irrational. चरण 1: किसी धनात्मक संख्या के वर्गमूल को उसी से गुणा करने पर वही संख्या मिलती है। चरण 2: \(\sqrt{5}\times\sqrt{5}=5\), और (5) परिमेय है। चरण 3: दो अपरिमेय संख्याओं का गुणनफल हमेशा अपरिमेय नहीं होता।

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