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stain-removal MCQ Questions for Class 9

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3 questions tagged with stain-removal.

Question 1/3 Easy Science Exploration: Entering the World of Secondary Science Variables in an experiment Class 9 Level 10

दाग हटाने के प्रयोग में हटे हुए दाग की मात्रा क्या है?

In a stain-removal experiment what is the amount of stain removed?

Explanation opens after your attempt
Correct Answer

A. आश्रित चरDependent variable

Step 1

Concept

The amount of stain removed is the measured result so it is the dependent variable. In exams identify the outcome.

Step 2

Why this answer is correct

The correct answer is A. आश्रित चर / Dependent variable. The amount of stain removed is the measured result so it is the dependent variable. In exams identify the outcome.

Step 3

Exam Tip

हटे हुए दाग की मात्रा मापा गया परिणाम है इसलिए यह आश्रित चर है। परीक्षा में परिणाम को पहचानें।

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

एक छात्र अलग मात्रा में साबुन लेकर दाग हटने की मात्रा मापता है। साबुन की मात्रा क्या है?

A student uses different amounts of soap and measures the amount of stain removed. What is the amount of soap?

Explanation opens after your attempt
Correct Answer

D. स्वतंत्र चरIndependent variable

Step 1

Concept

The amount of soap is deliberately changed so it is the independent variable. In exams identify the changed amount of substance.

Step 2

Why this answer is correct

The correct answer is D. स्वतंत्र चर / Independent variable. The amount of soap is deliberately changed so it is the independent variable. In exams identify the changed amount of substance.

Step 3

Exam Tip

साबुन की मात्रा जानबूझकर बदली जाती है इसलिए यह स्वतंत्र चर है। परीक्षा में बदले गए पदार्थ की मात्रा पहचानें।

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Question 3/3 Medium Science Exploration: Entering the World of Secondary Science Hypothesis and experimentation Class 9 Level 8

एक छात्र जाँचता है कि साबुन की मात्रा कपड़े से दाग हटाने को कैसे प्रभावित करती है। आश्रित चर क्या होगा?

A student tests how the amount of soap affects stain removal from cloth. What is the dependent variable?

Explanation opens after your attempt
Correct Answer

B. हटे हुए दाग की मात्राAmount of stain removed

Step 1

Concept

The amount of stain removed is the measured outcome so it is the dependent variable. In exams choose the variable measured as the effect.

Step 2

Why this answer is correct

The correct answer is B. हटे हुए दाग की मात्रा / Amount of stain removed. The amount of stain removed is the measured outcome so it is the dependent variable. In exams choose the variable measured as the effect.

Step 3

Exam Tip

हटे हुए दाग की मात्रा मापा गया परिणाम है इसलिए यह आश्रित चर है। परीक्षा में प्रभाव के रूप में मापे गए चर को चुनें।

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