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

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प्रयोग करने का मुख्य कारण क्या है?

What is the main reason for conducting an experiment?

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Correct Answer

B. किसी विचार या अनुमान की जांच करनाTesting an idea or prediction

Step 1

Concept

An experiment systematically tests an idea or prediction. Its purpose is testing.

Step 2

Why this answer is correct

The correct answer is B. किसी विचार या अनुमान की जांच करना / Testing an idea or prediction. An experiment systematically tests an idea or prediction. Its purpose is testing.

Step 3

Exam Tip

प्रयोग से किसी विचार या अनुमान की व्यवस्थित जांच होती है। प्रयोग का उद्देश्य परीक्षण करना है।

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किसी प्रयोग को दोहराने का एक प्रमुख उद्देश्य क्या है?

What is a major purpose of repeating an experiment?

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Correct Answer

C. परिणाम की विश्वसनीयता जांचनाChecking the reliability of the result

Step 1

Concept

Repeating an experiment shows whether similar results are obtained consistently. Repetition increases reliability.

Step 2

Why this answer is correct

The correct answer is C. परिणाम की विश्वसनीयता जांचना / Checking the reliability of the result. Repeating an experiment shows whether similar results are obtained consistently. Repetition increases reliability.

Step 3

Exam Tip

प्रयोग दोहराने से पता चलता है कि परिणाम लगातार मिल रहे हैं या नहीं। दोहराव विश्वसनीयता बढ़ाता है।

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वैज्ञानिक प्रयोग में चर किसे कहते हैं?

What is called a variable in a scientific experiment?

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Correct Answer

C. वह कारक जो बदल सकता हैA factor that can change

Step 1

Concept

A variable is a factor that can change or be measured in an experiment. Variable means a changing factor.

Step 2

Why this answer is correct

The correct answer is C. वह कारक जो बदल सकता है / A factor that can change. A variable is a factor that can change or be measured in an experiment. Variable means a changing factor.

Step 3

Exam Tip

चर वह कारक है जो प्रयोग में बदल सकता है या मापा जा सकता है। चर का अर्थ बदलने वाला कारक है।

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यदि प्रयोग का परिणाम परिकल्पना के विपरीत आए तो क्या करना चाहिए?

What should be done if an experiment gives a result opposite to the hypothesis?

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Correct Answer

C. परिणाम स्वीकार कर परिकल्पना पर पुनर्विचार करनाAccept the result and reconsider the hypothesis

Step 1

Concept

An opposite result is also scientific evidence and may show that the hypothesis needs revision. Accept results honestly.

Step 2

Why this answer is correct

The correct answer is C. परिणाम स्वीकार कर परिकल्पना पर पुनर्विचार करना / Accept the result and reconsider the hypothesis. An opposite result is also scientific evidence and may show that the hypothesis needs revision. Accept results honestly.

Step 3

Exam Tip

विपरीत परिणाम भी वैज्ञानिक प्रमाण होता है और परिकल्पना में सुधार की आवश्यकता दिखा सकता है। परिणाम को ईमानदारी से स्वीकार करें।

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विज्ञान में असफल प्रयोग का क्या महत्व हो सकता है?

What can be the importance of an unsuccessful experiment in science?

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Correct Answer

A. यह बताता है कि कौन सा तरीका काम नहीं कियाIt shows which method did not work

Step 1

Concept

An unsuccessful experiment also provides useful information and helps find a better method. Record every result.

Step 2

Why this answer is correct

The correct answer is A. यह बताता है कि कौन सा तरीका काम नहीं किया / It shows which method did not work. An unsuccessful experiment also provides useful information and helps find a better method. Record every result.

Step 3

Exam Tip

असफल प्रयोग भी उपयोगी जानकारी देता है और बेहतर विधि खोजने में सहायता करता है। हर परिणाम को दर्ज करें।

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