Concept-wise Practice

volcano evolution MCQ Questions for Class 11

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Practice Questions

2 questions tagged with volcano evolution.

मैग्मा विभेदीकरण से एक ही ज्वालामुखी में अलग-अलग लावा क्यों मिल सकते हैं?

Why can different lavas occur in the same volcano due to magma differentiation?

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Correct Answer

A. शेष मैग्मा की रचना क्रिस्टल अलगाव और मिश्रण से बदलती रहती हैComposition of remaining magma changes through crystal separation and mixing

Step 1

Concept

Processes in a magma chamber change composition and viscosity. Exam tip: treat a volcano as a multi-stage system.

Step 2

Why this answer is correct

The correct answer is A. शेष मैग्मा की रचना क्रिस्टल अलगाव और मिश्रण से बदलती रहती है / Composition of remaining magma changes through crystal separation and mixing. Processes in a magma chamber change composition and viscosity. Exam tip: treat a volcano as a multi-stage system.

Step 3

Exam Tip

मैग्मा कक्ष में प्रक्रियाएँ रचना और श्यानता बदलती हैं। परीक्षा में एक ज्वालामुखी को बहु-चरणीय प्रणाली मानें।

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एक ही ज्वालामुखी में ढाल ज्वालामुखी जैसी नींव और ऊपर मिश्रित शंकु मिलने पर क्या निष्कर्ष उचित है?

If the same volcano has a shield-like base and a composite cone above what conclusion is suitable?

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Correct Answer

A. उद्गार शैली और मैग्मा रचना समय के साथ बदलीEruption style and magma composition changed over time

Step 1

Concept

A volcano can evolve through multiple stages. Exam tip: treat a landform as an evolving system not a fixed one.

Step 2

Why this answer is correct

The correct answer is A. उद्गार शैली और मैग्मा रचना समय के साथ बदली / Eruption style and magma composition changed over time. A volcano can evolve through multiple stages. Exam tip: treat a landform as an evolving system not a fixed one.

Step 3

Exam Tip

ज्वालामुखी का विकास कई चरणों में हो सकता है। परीक्षा में एक स्थलरूप को स्थिर नहीं बल्कि विकसित प्रणाली मानें।

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