निष्पक्ष प्रयोग में सामान्यतः कितने स्वतंत्र चर बदले जाते हैं?
How many independent variables are usually changed in a fair experiment?
Explanation opens after your attempt
D. एकOne
Concept
Usually only one independent variable is changed in a fair experiment. Other related factors are kept the same.
Why this answer is correct
The correct answer is D. एक / One. Usually only one independent variable is changed in a fair experiment. Other related factors are kept the same.
Exam Tip
निष्पक्ष प्रयोग में सामान्यतः केवल एक स्वतंत्र चर बदला जाता है। बाकी संबंधित कारक समान रखे जाते हैं।
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