Concept-wise Practice

foam stability MCQ Questions for Class 9

foam stability 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 foam stability.

एक वैज्ञानिक प्रश्न है कि साबुन की सांद्रता झाग की स्थिरता को प्रभावित करती है या नहीं। झाग की स्थिरता को कैसे मापा जा सकता है?

A scientific question asks whether soap concentration affects foam stability. How can foam stability be measured?

Explanation opens after your attempt
Correct Answer

C. झाग समाप्त होने में लगे समय सेBy the time taken for the foam to disappear

Step 1

Concept

The time taken for foam to disappear is a clear measurable indicator of stability. In exams choose an operational measure for an abstract property.

Step 2

Why this answer is correct

The correct answer is C. झाग समाप्त होने में लगे समय से / By the time taken for the foam to disappear. The time taken for foam to disappear is a clear measurable indicator of stability. In exams choose an operational measure for an abstract property.

Step 3

Exam Tip

झाग समाप्त होने का समय स्थिरता का स्पष्ट माप योग्य संकेतक है। परीक्षा में अमूर्त गुण के लिए क्रियात्मक माप चुनें।

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