Keeping water amount the same allows only the effect of light to be observed. Water is a controlled variable here.
Step 2
Why this answer is correct
The correct answer is C. समान रखनी चाहिए / It should be kept the same. Keeping water amount the same allows only the effect of light to be observed. Water is a controlled variable here.
Step 3
Exam Tip
पानी की मात्रा समान रखने से केवल प्रकाश का प्रभाव देखा जा सकता है। पानी यहां नियंत्रित चर है।
D. परिणाम का वास्तविक कारण पता लगाना कठिन होगा/It will be difficult to identify the real cause of the result
Step 1
Concept
When several factors change it becomes unclear what caused the result. Change one main factor at a time.
Step 2
Why this answer is correct
The correct answer is D. परिणाम का वास्तविक कारण पता लगाना कठिन होगा / It will be difficult to identify the real cause of the result. When several factors change it becomes unclear what caused the result. Change one main factor at a time.
Step 3
Exam Tip
कई कारक बदलने पर यह पता नहीं चलता कि परिणाम किस कारण आया। एक समय में एक मुख्य कारक बदलें।
Keeping the amount of sugar the same makes the effect of temperature clear. It is a controlled variable.
Step 2
Why this answer is correct
The correct answer is C. हर परीक्षण में समान / The same in every trial. Keeping the amount of sugar the same makes the effect of temperature clear. It is a controlled variable.
Step 3
Exam Tip
चीनी की मात्रा समान रखने से तापमान का प्रभाव स्पष्ट रहता है। यह नियंत्रित चर है।
D. जिसे छात्र जानबूझकर बदलता है/The factor the student deliberately changes
Step 1
Concept
The factor deliberately changed is the independent variable. Look for the changed factor in the question.
Step 2
Why this answer is correct
The correct answer is D. जिसे छात्र जानबूझकर बदलता है / The factor the student deliberately changes. The factor deliberately changed is the independent variable. Look for the changed factor in the question.
Step 3
Exam Tip
जिस कारक को जानबूझकर बदला जाता है वही स्वतंत्र चर होता है। प्रश्न में बदला गया कारक खोजें।
A. जिसे मापा या देखा जाता है/The factor that is measured or observed
Step 1
Concept
The measured or observed outcome is the dependent variable. It may change because of the independent variable.
Step 2
Why this answer is correct
The correct answer is A. जिसे मापा या देखा जाता है / The factor that is measured or observed. The measured or observed outcome is the dependent variable. It may change because of the independent variable.
Step 3
Exam Tip
मापा या देखा गया परिणाम आश्रित चर होता है। यह स्वतंत्र चर के कारण बदल सकता है।
