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Science Scientific questions and observations MCQ Questions for Class 9

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Scientific questions and observations Practice Questions

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वैज्ञानिक प्रश्न किस आधार पर जांचा जाता है?

On what basis is a scientific question tested?

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Correct Answer

A. प्रमाणEvidence

Step 1

Concept

A scientific question is tested using evidence. In exams identify testable questions.

Step 2

Why this answer is correct

The correct answer is A. प्रमाण / Evidence. A scientific question is tested using evidence. In exams identify testable questions.

Step 3

Exam Tip

वैज्ञानिक प्रश्न प्रमाण से जांचा जाता है। परीक्षा में जांच योग्य प्रश्न पहचानें।

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वैज्ञानिक अवलोकन क्या होता है?

What is a scientific observation?

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Correct Answer

C. ध्यानपूर्वक प्राप्त तथ्यA fact obtained carefully

Step 1

Concept

A scientific observation is based on a carefully seen or measured fact. Distinguish facts from opinions.

Step 2

Why this answer is correct

The correct answer is C. ध्यानपूर्वक प्राप्त तथ्य / A fact obtained carefully. A scientific observation is based on a carefully seen or measured fact. Distinguish facts from opinions.

Step 3

Exam Tip

वैज्ञानिक अवलोकन ध्यान से देखे या मापे गए तथ्य पर आधारित होता है। मत और तथ्य में अंतर रखें।

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कौन सा कथन मात्रात्मक अवलोकन है?

Which statement is a quantitative observation?

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Correct Answer

D. पौधे की ऊंचाई तीस सेंटीमीटर हैThe plant is thirty centimetres tall

Step 1

Concept

A quantitative observation contains a number and measurement. Here height is numerical.

Step 2

Why this answer is correct

The correct answer is D. पौधे की ऊंचाई तीस सेंटीमीटर है / The plant is thirty centimetres tall. A quantitative observation contains a number and measurement. Here height is numerical.

Step 3

Exam Tip

मात्रात्मक अवलोकन में संख्या और मापन होता है। यहां ऊंचाई संख्यात्मक है।

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द्रव का आयतन मापने के लिए क्या उपयोग किया जाता है?

What is used to measure the volume of a liquid?

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Correct Answer

D. मापक सिलिंडरMeasuring cylinder

Step 1

Concept

A measuring cylinder measures liquid volume. Read the scale at eye level.

Step 2

Why this answer is correct

The correct answer is D. मापक सिलिंडर / Measuring cylinder. A measuring cylinder measures liquid volume. Read the scale at eye level.

Step 3

Exam Tip

मापक सिलिंडर द्रव का आयतन मापता है। मापन आंख के स्तर पर पढ़ें।

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एक वैज्ञानिक प्रश्न का उत्तर कैसे खोजा जा सकता है?

How can the answer to a scientific question be found?

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A. अवलोकन या प्रयोग सेThrough observation or experiment

Step 1

Concept

A scientific question is answered through evidence based investigation. Observation and experiment are main methods.

Step 2

Why this answer is correct

The correct answer is A. अवलोकन या प्रयोग से / Through observation or experiment. A scientific question is answered through evidence based investigation. Observation and experiment are main methods.

Step 3

Exam Tip

वैज्ञानिक प्रश्न का उत्तर प्रमाण आधारित जांच से मिलता है। अवलोकन और प्रयोग मुख्य विधियां हैं।

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अवलोकन को तुरंत लिखना क्यों अच्छा है?

Why is it good to record an observation immediately?

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Correct Answer

B. भूल कम करने के लिएTo reduce forgetting

Step 1

Concept

Immediate recording keeps information accurate. Do not depend only on memory.

Step 2

Why this answer is correct

The correct answer is B. भूल कम करने के लिए / To reduce forgetting. Immediate recording keeps information accurate. Do not depend only on memory.

Step 3

Exam Tip

तुरंत लिखने से जानकारी सही रहती है। केवल स्मृति पर निर्भर न रहें।

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कौन सा कथन व्यक्तिगत मत है?

Which statement is a personal opinion?

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D. यह फूल सबसे सुंदर हैThis flower is the most beautiful

Step 1

Concept

Beauty depends on personal preference. A scientific observation should be factual.

Step 2

Why this answer is correct

The correct answer is D. यह फूल सबसे सुंदर है / This flower is the most beautiful. Beauty depends on personal preference. A scientific observation should be factual.

Step 3

Exam Tip

सुंदरता व्यक्तिगत पसंद पर निर्भर करती है। वैज्ञानिक अवलोकन तथ्यात्मक होना चाहिए।

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किस प्रश्न में पौधे की ऊंचाई मापी जा रही है?

In which question is plant height being measured?

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A. क्या प्रकाश की मात्रा पौधे की ऊंचाई को प्रभावित करती हैDoes the amount of light affect plant height

Step 1

Concept

Plant height is a measurable outcome. This question can be tested scientifically.

Step 2

Why this answer is correct

The correct answer is A. क्या प्रकाश की मात्रा पौधे की ऊंचाई को प्रभावित करती है / Does the amount of light affect plant height. Plant height is a measurable outcome. This question can be tested scientifically.

Step 3

Exam Tip

पौधे की ऊंचाई मापने योग्य परिणाम है। यह प्रश्न वैज्ञानिक रूप से जांचा जा सकता है।

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किस प्रश्न में समय मापा जा सकता है?

In which question can time be measured?

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Correct Answer

B. गर्म कमरे में बर्फ कितनी देर में पिघलती हैHow long does ice take to melt in a warm room

Step 1

Concept

The melting time of ice can be measured with a clock. A measurable question is scientific.

Step 2

Why this answer is correct

The correct answer is B. गर्म कमरे में बर्फ कितनी देर में पिघलती है / How long does ice take to melt in a warm room. The melting time of ice can be measured with a clock. A measurable question is scientific.

Step 3

Exam Tip

बर्फ के पिघलने का समय घड़ी से मापा जा सकता है। माप योग्य प्रश्न वैज्ञानिक होता है।

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किस कथन में संख्या का प्रयोग हुआ है?

Which statement uses a number?

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Correct Answer

C. पात्र में दो सौ मिलीलीटर पानी हैThe container has two hundred millilitres of water

Step 1

Concept

Two hundred millilitres is a numerical measurement. Facts with numbers provide quantitative data.

Step 2

Why this answer is correct

The correct answer is C. पात्र में दो सौ मिलीलीटर पानी है / The container has two hundred millilitres of water. Two hundred millilitres is a numerical measurement. Facts with numbers provide quantitative data.

Step 3

Exam Tip

दो सौ मिलीलीटर संख्यात्मक मापन है। संख्या वाले तथ्य मात्रात्मक आंकड़े देते हैं।

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