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variable-levels MCQ Questions for Class 9

variable-levels se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with variable-levels.

Question 1/2 Hard Science Exploration: Entering the World of Secondary Science Variables in an experiment Class 9 Level 11

चार पौधों को क्रमशः (50,mL), (100,mL), (150,mL) और (200,mL) जल दिया गया। इस प्रयोग में स्वतंत्र चर के स्तर कितने हैं?

Four plants receive (50,mL), (100,mL), (150,mL) and (200,mL) of water respectively. How many levels of the independent variable are present?

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Correct Answer

C. चारFour

Step 1

Concept

The four different amounts of water are four levels of the independent variable. Each distinct value counts as one level.

Step 2

Why this answer is correct

The correct answer is C. चार / Four. The four different amounts of water are four levels of the independent variable. Each distinct value counts as one level.

Step 3

Exam Tip

जल की चार अलग मात्राएँ स्वतंत्र चर के चार स्तर हैं। प्रत्येक अलग मान को एक स्तर माना जाता है।

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

स्वतंत्र चर के अलग स्तर रखने का उद्देश्य क्या है?

What is the purpose of using different levels of an independent variable?

Explanation opens after your attempt
Correct Answer

B. आश्रित चर पर उसके प्रभाव की तुलना करनाTo compare its effect on the dependent variable

Step 1

Concept

Different levels show how the outcome changes as the independent variable changes. Keep other factors constant.

Step 2

Why this answer is correct

The correct answer is B. आश्रित चर पर उसके प्रभाव की तुलना करना / To compare its effect on the dependent variable. Different levels show how the outcome changes as the independent variable changes. Keep other factors constant.

Step 3

Exam Tip

अलग स्तरों से देखा जाता है कि स्वतंत्र चर बदलने पर परिणाम कैसे बदलता है। बाकी कारक समान रखें।

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