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foam-height MCQ Questions for Class 9

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3 questions tagged with foam-height.

Question 1/3 Medium Science Exploration: Entering the World of Secondary Science Variables in an experiment Class 9 Level 12

डिटर्जेंट वाले प्रयोग में झाग की ऊँचाई हर बार अलग पात्र में मापी जाती है। इससे क्या समस्या हो सकती है?

In a detergent experiment foam height is measured in a different container each time. What problem may occur?

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Correct Answer

D. पात्र का आकार झाग की ऊँचाई को प्रभावित कर सकता हैContainer shape may affect foam height

Step 1

Concept

Different container shapes may show different heights for the same foam amount. In exams use the same measuring container.

Step 2

Why this answer is correct

The correct answer is D. पात्र का आकार झाग की ऊँचाई को प्रभावित कर सकता है / Container shape may affect foam height. Different container shapes may show different heights for the same foam amount. In exams use the same measuring container.

Step 3

Exam Tip

अलग आकार के पात्र समान झाग को अलग ऊँचाई दिखा सकते हैं। परीक्षा में मापने वाला पात्र समान रखें।

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Question 2/3 Medium Science Exploration: Entering the World of Secondary Science Variables in an experiment Class 9 Level 10

एक छात्र जांचता है कि साबुन की मात्रा झाग की ऊंचाई को कैसे प्रभावित करती है। स्वतंत्र चर कौन सा है?

A student investigates how the amount of soap affects foam height. What is the independent variable?

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Correct Answer

B. साबुन की मात्राAmount of soap

Step 1

Concept

The amount of soap is deliberately changed so it is the independent variable. Foam height will be the measured outcome.

Step 2

Why this answer is correct

The correct answer is B. साबुन की मात्रा / Amount of soap. The amount of soap is deliberately changed so it is the independent variable. Foam height will be the measured outcome.

Step 3

Exam Tip

साबुन की मात्रा जानबूझकर बदली जाती है इसलिए यह स्वतंत्र चर है। झाग की ऊंचाई मापा गया परिणाम होगी।

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Question 3/3 Easy Science Exploration: Entering the World of Secondary Science Variables in an experiment Class 9 Level 12

डिटर्जेंट प्रयोग में झाग की ऊँचाई कौन सा चर है?

In the detergent experiment what type of variable is foam height?

Explanation opens after your attempt
Correct Answer

B. आश्रित चरDependent variable

Step 1

Concept

Foam height is measured as the result of changing detergent amount. In exams choose the outcome variable.

Step 2

Why this answer is correct

The correct answer is B. आश्रित चर / Dependent variable. Foam height is measured as the result of changing detergent amount. In exams choose the outcome variable.

Step 3

Exam Tip

झाग की ऊँचाई डिटर्जेंट की मात्रा के परिणाम के रूप में मापी जाती है। परीक्षा में परिणाम वाले चर को चुनें।

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