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controlled-factors MCQ Questions for Class 9

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4 questions tagged with controlled-factors.

Question 1/4 Hard Science Exploration: Entering the World of Secondary Science Hypothesis and experimentation Class 9 Level 9

किसी प्रयोग की आंतरिक वैधता कब सबसे अधिक होती है?

When is the internal validity of an experiment highest?

Explanation opens after your attempt
Correct Answer

A. जब परिणाम का अंतर मुख्यतः स्वतंत्र चर से समझाया जा सकेWhen the result difference can mainly be explained by the independent variable

Step 1

Concept

When other influential factors are controlled the result can be linked to the independent variable. In exams connect validity with clarity of cause.

Step 2

Why this answer is correct

The correct answer is A. जब परिणाम का अंतर मुख्यतः स्वतंत्र चर से समझाया जा सके / When the result difference can mainly be explained by the independent variable. When other influential factors are controlled the result can be linked to the independent variable. In exams connect validity with clarity of cause.

Step 3

Exam Tip

अन्य प्रभावकारी कारक नियंत्रित होने पर परिणाम स्वतंत्र चर से जोड़ा जा सकता है। परीक्षा में वैधता को कारण की स्पष्टता से जोड़ें।

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Question 2/4 Easy Science 49 Exploration: Entering the World of Secondary Science Class 9 Level 6

पौधे की वृद्धि जांचते समय पानी के अलावा अन्य कारकों को समान क्यों रखा जाता है?

Why are factors other than water kept the same while studying plant growth?

Explanation opens after your attempt
Correct Answer

A. पानी के प्रभाव को स्पष्ट देखने के लिएTo clearly observe the effect of water

Step 1

Concept

When other factors remain the same the effect of water becomes clear. This is called a fair test.

Step 2

Why this answer is correct

The correct answer is A. पानी के प्रभाव को स्पष्ट देखने के लिए / To clearly observe the effect of water. When other factors remain the same the effect of water becomes clear. This is called a fair test.

Step 3

Exam Tip

अन्य कारक समान रहने पर पानी का प्रभाव स्पष्ट होता है। इसे निष्पक्ष जांच कहते हैं।

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Question 3/4 Easy Science Exploration: Entering the World of Secondary Science Scientific questions and observations Class 9 Level 4

निष्पक्ष प्रयोग में अन्य कारकों को कैसा रखा जाता है?

How are other factors kept in a fair experiment?

Explanation opens after your attempt
Correct Answer

A. समानSame

Step 1

Concept

Keeping other factors the same shows the effect of only the changed factor. In exams remember the rule of a fair test.

Step 2

Why this answer is correct

The correct answer is A. समान / Same. Keeping other factors the same shows the effect of only the changed factor. In exams remember the rule of a fair test.

Step 3

Exam Tip

अन्य कारकों को समान रखने से केवल बदले गए कारक का प्रभाव पता चलता है। परीक्षा में निष्पक्ष जाँच का नियम याद रखें।

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Question 4/4 Easy Science Exploration: Entering the World of Secondary Science Nature and meaning of science Class 9 Level 1

निष्पक्ष परीक्षण में किन कारकों को समान रखा जाता है?

In a fair test which factors are kept the same?

Explanation opens after your attempt
Correct Answer

D. वे कारक जिन्हें बदला नहीं जा रहाFactors that are not being changed

Step 1

Concept

In a fair test conditions other than the tested factor are kept the same. This makes comparison valid.

Step 2

Why this answer is correct

The correct answer is D. वे कारक जिन्हें बदला नहीं जा रहा / Factors that are not being changed. In a fair test conditions other than the tested factor are kept the same. This makes comparison valid.

Step 3

Exam Tip

निष्पक्ष परीक्षण में जांचे जा रहे कारक के अलावा अन्य स्थितियां समान रखी जाती हैं। इससे तुलना उचित होती है।

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