Class 9 Science - Exploration: Entering the World of Secondary Science - Variables in an experiment Easy Quiz

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एक प्रयोग में जानबूझकर बदले जाने वाले कारक को क्या कहते हैं?

What is the factor deliberately changed in an experiment called?

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Correct Answer

C. स्वतंत्र चरIndependent variable

Step 1

Concept

The factor deliberately changed is called the independent variable. In exams identify the changed factor.

Step 2

Why this answer is correct

The correct answer is C. स्वतंत्र चर / Independent variable. The factor deliberately changed is called the independent variable. In exams identify the changed factor.

Step 3

Exam Tip

जानबूझकर बदला गया कारक स्वतंत्र चर कहलाता है। परीक्षा में बदले गए कारक को पहचानें।

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एक प्रयोग में मापे जाने वाले परिणाम को क्या कहते हैं?

What is the measured result in an experiment called?

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Correct Answer

D. आश्रित चरDependent variable

Step 1

Concept

The measured result is called the dependent variable. In exams choose the factor measured as the outcome.

Step 2

Why this answer is correct

The correct answer is D. आश्रित चर / Dependent variable. The measured result is called the dependent variable. In exams choose the factor measured as the outcome.

Step 3

Exam Tip

मापा गया परिणाम आश्रित चर कहलाता है। परीक्षा में परिणाम के रूप में मापे गए कारक को चुनें।

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निष्पक्ष प्रयोग में अन्य कारकों को कैसा रखा जाता है?

How are other factors kept in a fair experiment?

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Correct Answer

A. समानSame

Step 1

Concept

Keeping other factors the same shows the effect of only the changed factor. In exams remember the rule of a fair test.

Step 2

Why this answer is correct

The correct answer is A. समान / Same. Keeping other factors the same shows the effect of only the changed factor. In exams remember the rule of a fair test.

Step 3

Exam Tip

अन्य कारकों को समान रखने से केवल बदले गए कारक का प्रभाव पता चलता है। परीक्षा में निष्पक्ष जाँच का नियम याद रखें।

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प्रयोग को दोहराने का मुख्य कारण क्या है?

What is the main reason for repeating an experiment?

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Correct Answer

A. परिणाम की पुष्टि करनाTo confirm the result

Step 1

Concept

Repeating an experiment helps check the reliability of the result. In exams connect repetition with confirmation.

Step 2

Why this answer is correct

The correct answer is A. परिणाम की पुष्टि करना / To confirm the result. Repeating an experiment helps check the reliability of the result. In exams connect repetition with confirmation.

Step 3

Exam Tip

प्रयोग दोहराने से परिणाम की विश्वसनीयता जाँची जाती है। परीक्षा में पुनरावृत्ति को पुष्टि से जोड़ें।

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वैज्ञानिक प्रश्न में किसका होना उपयोगी है?

What is useful to include in a scientific question?

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Correct Answer

C. मापने योग्य कारकMeasurable factors

Step 1

Concept

Measurable factors make a question testable. In exams look for clear variables.

Step 2

Why this answer is correct

The correct answer is C. मापने योग्य कारक / Measurable factors. Measurable factors make a question testable. In exams look for clear variables.

Step 3

Exam Tip

मापने योग्य कारक प्रश्न को जाँच योग्य बनाते हैं। परीक्षा में स्पष्ट चर खोजें।

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यदि छात्र पौधे को प्रतिदिन अलग मात्रा में जल देता है तो बदला गया कारक क्या है?

If a student gives a plant different amounts of water each day what is the changed factor?

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Correct Answer

A. जल की मात्राAmount of water

Step 1

Concept

The deliberately changed amount of water is the independent variable. In exams identify the changed factor.

Step 2

Why this answer is correct

The correct answer is A. जल की मात्रा / Amount of water. The deliberately changed amount of water is the independent variable. In exams identify the changed factor.

Step 3

Exam Tip

जानबूझकर बदली गई जल की मात्रा स्वतंत्र चर है। परीक्षा में बदले गए कारक को पहचानें।

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यदि दो पौधों की तुलना करनी हो तो क्या समान रखना चाहिए?

What should be kept the same when comparing two plants?

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Correct Answer

B. मिट्टी और गमले का आकारSoil and pot size

Step 1

Concept

Keeping soil and pot size the same makes the comparison fair. In exams identify controlled factors.

Step 2

Why this answer is correct

The correct answer is B. मिट्टी और गमले का आकार / Soil and pot size. Keeping soil and pot size the same makes the comparison fair. In exams identify controlled factors.

Step 3

Exam Tip

मिट्टी और गमले का आकार समान रखने से तुलना निष्पक्ष होती है। परीक्षा में नियंत्रित कारक पहचानें।

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कौन सा प्रश्न तापमान और घुलने की दर का संबंध जाँचता है?

Which question tests the relationship between temperature and dissolving rate?

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Correct Answer

A. क्या गर्म जल में चीनी जल्दी घुलती है?Does sugar dissolve faster in hot water?

Step 1

Concept

The relationship between hot water and dissolving speed can be tested experimentally. In exams identify a question with two variables.

Step 2

Why this answer is correct

The correct answer is A. क्या गर्म जल में चीनी जल्दी घुलती है? / Does sugar dissolve faster in hot water?. The relationship between hot water and dissolving speed can be tested experimentally. In exams identify a question with two variables.

Step 3

Exam Tip

गर्म जल और घुलने की गति का संबंध प्रयोग से जाँचा जा सकता है। परीक्षा में दो चरों वाला प्रश्न पहचानें।

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