एक छात्र पूछता है कि साबुन की मात्रा झाग की ऊँचाई को प्रभावित करती है या नहीं। कौन सा कारक समान रखना चाहिए?
A student asks whether the amount of soap affects foam height. Which factor should be kept the same?
Explanation opens after your attempt
B. जल की मात्राAmount of water
Concept
The amount of water should be controlled so that only the effect of soap amount is tested. In exams keep other influencing factors constant.
Why this answer is correct
The correct answer is B. जल की मात्रा / Amount of water. The amount of water should be controlled so that only the effect of soap amount is tested. In exams keep other influencing factors constant.
Exam Tip
जल की मात्रा नियंत्रित रखनी चाहिए ताकि केवल साबुन की मात्रा का प्रभाव जाँचा जाए। परीक्षा में अन्य प्रभावकारी कारक समान रखें।
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