Concept-wise Practice

wrong step MCQ Questions for Class 10

wrong step se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

1 questions tagged with wrong step.

Question 1/1 Medium Mathematics Chapter 1: Real Numbers 6: Proof of irrationality of √2, √3, √5 Class 10 Level 18

कौन सा विकल्प \(\sqrt{2}\) के प्रमाण में सही नहीं है?

Which option is not correct in the proof of \(\sqrt{2}\)?

Explanation opens after your attempt
Correct Answer

D. \(a^2=2b^2\) से सीधे (a=2b)From \(a^2=2b^2\), directly (a=2b)

Step 1

Concept

From \(a^2=2b^2\), \(a^2\) is even.

Step 2

Why this answer is correct

This gives (a) even, but not directly (a=2b).

Step 3

Exam Tip

The correct step is to write (a=2k). चरण 1: \(a^2=2b^2\) से \(a^2\) सम मिलता है। चरण 2: इससे (a) सम है, लेकिन सीधे (a=2b) नहीं मिलता। चरण 3: सही कदम (a=2k) लिखना है।

Open Question Page
Ask Friends
Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.