यदि पानी के तापमान का घुलने की गति पर प्रभाव जांचना हो तो कौन सा कारक समान रखना चाहिए?
If the effect of water temperature on dissolving rate is tested which factor should be kept constant?
Explanation opens after your attempt
C. नमक की मात्राAmount of salt
Concept
Keeping the amount of salt constant makes the effect of temperature clear. It is a controlled variable.
Why this answer is correct
The correct answer is C. नमक की मात्रा / Amount of salt. Keeping the amount of salt constant makes the effect of temperature clear. It is a controlled variable.
Exam Tip
नमक की मात्रा समान रखने से केवल तापमान का प्रभाव स्पष्ट होगा। इसे नियंत्रित चर कहते हैं।
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