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controlled trials MCQ Questions for Class 9

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2 questions tagged with controlled trials.

Question 1/2 Expert Science Exploration: Entering the World of Secondary Science Hypothesis and experimentation Class 9 Level 7

किस परिस्थिति में परिकल्पना को असमर्थित कहना सबसे उचित होगा?

Under which condition is it most appropriate to call a hypothesis unsupported?

Explanation opens after your attempt
Correct Answer

B. कई अच्छी तरह नियंत्रित परीक्षणों में आंकड़े लगातार विपरीत परिणाम देंSeveral well controlled trials consistently give the opposite result

Step 1

Concept

Consistent opposing evidence from several controlled trials makes a hypothesis unsupported. One trial alone is not sufficient.

Step 2

Why this answer is correct

The correct answer is B. कई अच्छी तरह नियंत्रित परीक्षणों में आंकड़े लगातार विपरीत परिणाम दें / Several well controlled trials consistently give the opposite result. Consistent opposing evidence from several controlled trials makes a hypothesis unsupported. One trial alone is not sufficient.

Step 3

Exam Tip

कई नियंत्रित परीक्षणों में लगातार विपरीत प्रमाण परिकल्पना को असमर्थित करते हैं। एक अकेला परीक्षण पर्याप्त नहीं है।

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Question 2/2 Hard Science Exploration: Entering the World of Secondary Science Hypothesis and experimentation Class 9 Level 8

कौन सा डेटा परिकल्पना के विरुद्ध सबसे मजबूत प्रमाण देगा?

Which data would provide the strongest evidence against a hypothesis?

Explanation opens after your attempt
Correct Answer

B. कई नियंत्रित दोहरावों में लगातार विपरीत परिणामConsistently opposite results across many controlled repetitions

Step 1

Concept

Many controlled and consistent opposite results provide strong evidence against a hypothesis. In exams consider both quantity and quality of evidence.

Step 2

Why this answer is correct

The correct answer is B. कई नियंत्रित दोहरावों में लगातार विपरीत परिणाम / Consistently opposite results across many controlled repetitions. Many controlled and consistent opposite results provide strong evidence against a hypothesis. In exams consider both quantity and quality of evidence.

Step 3

Exam Tip

कई नियंत्रित और सुसंगत विपरीत परिणाम परिकल्पना के विरुद्ध मजबूत प्रमाण होते हैं। परीक्षा में प्रमाण की मात्रा और गुणवत्ता दोनों देखें।

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