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measurement consistency MCQ Questions for Class 9

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3 questions tagged with measurement consistency.

Question 1/3 Expert Science Exploration: Entering the World of Secondary Science Hypothesis and experimentation Class 9 Level 9

एक पौधे की वृद्धि मापते समय मिट्टी से सबसे ऊँची पत्ती तक कभी और तने के शीर्ष तक कभी मापा गया। इससे कौन-सी समस्या हुई?

While measuring plant growth the student sometimes measured to the highest leaf and sometimes to the top of the stem. What problem occurred?

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Correct Answer

A. मापन विधि असंगत रहीThe measurement method was inconsistent

Step 1

Concept

Different measurement rules reduce comparability and reliability. In exams use the same operational method in every trial.

Step 2

Why this answer is correct

The correct answer is A. मापन विधि असंगत रही / The measurement method was inconsistent. Different measurement rules reduce comparability and reliability. In exams use the same operational method in every trial.

Step 3

Exam Tip

अलग मापन नियम आँकड़ों की तुलना और विश्वसनीयता घटाते हैं। परीक्षा में हर परीक्षण में समान संचालनात्मक विधि रखें।

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Question 2/3 Expert Science Exploration: Entering the World of Secondary Science Scientific questions and observations Class 9 Level 5

एक छात्र ने पौधे की ऊंचाई सुबह कुछ दिनों में और शाम अन्य दिनों में मापी। इससे किस प्रकार की त्रुटि की संभावना बढ़ती है?

A student measured plant height in the morning on some days and in the evening on other days. What type of problem is most likely to increase?

Explanation opens after your attempt
Correct Answer

A. मापन की असंगतताInconsistency in measurement

Step 1

Concept

Conditions may differ at different times making comparison less reliable. Take repeated measurements at the same time.

Step 2

Why this answer is correct

The correct answer is A. मापन की असंगतता / Inconsistency in measurement. Conditions may differ at different times making comparison less reliable. Take repeated measurements at the same time.

Step 3

Exam Tip

अलग समय पर परिस्थितियां बदल सकती हैं जिससे तुलना कम विश्वसनीय होती है। नियमित मापन समान समय पर करें।

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

एक प्रयोग में स्वतंत्र चर बदला गया लेकिन आश्रित चर की परिभाषा प्रयोग के बीच बदल दी गई। मुख्य समस्या क्या है?

The independent variable was changed in an experiment but the definition of the dependent variable was altered midway. What is the main problem?

Explanation opens after your attempt
Correct Answer

A. मापन की संगति और वैधता कमजोर हो गईConsistency and validity of measurement were weakened

Step 1

Concept

Changing measurement criteria means results from different stages may not have the same meaning. Keep operational definitions stable.

Step 2

Why this answer is correct

The correct answer is A. मापन की संगति और वैधता कमजोर हो गई / Consistency and validity of measurement were weakened. Changing measurement criteria means results from different stages may not have the same meaning. Keep operational definitions stable.

Step 3

Exam Tip

मापन मानदंड बदलने से अलग चरणों के परिणाम समान अर्थ नहीं रखते। परीक्षा में परिचालन परिभाषा स्थिर रखें।

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