यदि किसी प्रयोग में एक साथ कई कारक बदल दिए जाएं तो क्या कठिनाई होगी?
What difficulty arises if several factors are changed at the same time in an experiment?
Explanation opens after your attempt
D. परिणाम का सही कारण पहचानना कठिन होगाIt will be difficult to identify the true cause of the result
Concept
Changing several factors makes it difficult to know which caused the effect. Change one factor at a time.
Why this answer is correct
The correct answer is D. परिणाम का सही कारण पहचानना कठिन होगा / It will be difficult to identify the true cause of the result. Changing several factors makes it difficult to know which caused the effect. Change one factor at a time.
Exam Tip
कई कारक बदलने से यह पता लगाना कठिन होता है कि प्रभाव किस कारण से हुआ। एक समय में एक कारक बदलें।
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