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controlled-test MCQ Questions for Class 9

controlled-test se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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3 questions tagged with controlled-test.

Question 1/3 Medium Science Exploration: Entering the World of Secondary Science Nature and meaning of science Class 9 Level 3

एक विद्यार्थी कहता है कि भारी वस्तु हमेशा तेजी से गिरती है। वैज्ञानिक रूप से सही कदम क्या होगा?

A student says that a heavier object always falls faster. What is the scientifically correct step?

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Correct Answer

B. नियंत्रित परिस्थितियों में परीक्षण करनाTest it under controlled conditions

Step 1

Concept

The claim should be tested under controlled conditions. Choose experimentation when evaluating scientific claims.

Step 2

Why this answer is correct

The correct answer is B. नियंत्रित परिस्थितियों में परीक्षण करना / Test it under controlled conditions. The claim should be tested under controlled conditions. Choose experimentation when evaluating scientific claims.

Step 3

Exam Tip

दावे को नियंत्रित परीक्षण से जाँचना चाहिए। परीक्षा में वैज्ञानिक दावे के साथ प्रयोग का विकल्प चुनें।

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Question 2/3 Medium Science Exploration: Entering the World of Secondary Science Nature and meaning of science Class 9 Level 2

विज्ञान में कारण का दावा करने के लिए क्या आवश्यक है?

What is necessary to claim causation in science?

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Correct Answer

A. नियंत्रित परीक्षण और पर्याप्त प्रमाणControlled testing and sufficient evidence

Step 1

Concept

Controlled testing and sufficient evidence are needed to establish causation. Do not confuse correlation with causation.

Step 2

Why this answer is correct

The correct answer is A. नियंत्रित परीक्षण और पर्याप्त प्रमाण / Controlled testing and sufficient evidence. Controlled testing and sufficient evidence are needed to establish causation. Do not confuse correlation with causation.

Step 3

Exam Tip

कारण सिद्ध करने के लिए नियंत्रित परीक्षण और पर्याप्त प्रमाण चाहिए। परीक्षा में सहसंबंध को कारण न मानें।

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Question 3/3 Easy Science Exploration: Entering the World of Secondary Science Nature and meaning of science Class 9 Level 3

वैज्ञानिक जांच में निष्पक्ष तुलना के लिए क्या आवश्यक है?

What is necessary for a fair comparison in a scientific investigation?

Explanation opens after your attempt
Correct Answer

A. अधिकांश स्थितियों को समान रखनाKeeping most conditions the same

Step 1

Concept

For a fair comparison conditions other than the tested factor are kept the same. This is a controlled test.

Step 2

Why this answer is correct

The correct answer is A. अधिकांश स्थितियों को समान रखना / Keeping most conditions the same. For a fair comparison conditions other than the tested factor are kept the same. This is a controlled test.

Step 3

Exam Tip

निष्पक्ष तुलना के लिए जांचे जा रहे कारक के अलावा अन्य स्थितियां समान रखी जाती हैं। इसे नियंत्रित परीक्षण कहते हैं।

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