यदि एक साथ कई कारक बदल दिए जाएं तो क्या समस्या होगी?
What problem occurs if several factors are changed at the same time?
Explanation opens after your attempt
D. परिणाम का वास्तविक कारण पहचानना कठिन होगाIt will be difficult to identify the actual cause of the result
Concept
Changing several factors together makes the cause of the result unclear. Change only one factor for a fair test.
Why this answer is correct
The correct answer is D. परिणाम का वास्तविक कारण पहचानना कठिन होगा / It will be difficult to identify the actual cause of the result. Changing several factors together makes the cause of the result unclear. Change only one factor for a fair test.
Exam Tip
एक साथ कई कारक बदलने से परिणाम का कारण स्पष्ट नहीं रहता। निष्पक्ष जांच के लिए एक ही कारक बदलें।
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