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Matter and its states practice question for Railways, SSC. Review the correct answer and explanation, then continue with related practice below.

Question language / प्रश्न भाषा

The direct conversion of a solid into vapour without passing through the liquid state is called ______.

द्रव अवस्था से गुजरे बिना ठोस का सीधे वाष्प में परिवर्तन ______ कहलाता है।

Answer and explanation are free to read — no sign-in required.उत्तर और व्याख्या पढ़ने के लिए साइन-इन आवश्यक नहीं है।

A

Fusionगलन

B

Sublimationउर्ध्वपातन

✓

C

Condensationसंघनन

D

Freezingजमना

Correct Answerसही उत्तर

B. SublimationB. उर्ध्वपातन

Explanationव्याख्या

Sublimation is the direct change of a solid into vapour without becoming liquid.

ठोस का द्रव बने बिना सीधे वाष्प में बदलना उर्ध्वपातन कहलाता है। ---

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Which process converts a solid directly into a gas without passing through the liquid state?कौन-सी प्रक्रिया ठोस को द्रव अवस्था से गुजरे बिना सीधे गैस में बदलती है?Same topic · Same subject · Same exam

Which statement best describes the role of temperature and pressure in changing the state of matter?पदार्थ की अवस्था बदलने में तापमान और दाब की भूमिका को कौन-सा कथन सबसे अच्छी तरह बताता है?Same topic · Same subject · Same exam

Which of the following correctly matches the change of state with its process?निम्नलिखित में से कौन अवस्था परिवर्तन और उसकी प्रक्रिया का सही मिलान है?Same topic · Same subject · Same exam

Specific latent heat of vaporisation is the heat required to convert 1 kg of liquid into gas at its ______.विशिष्ट वाष्पन गुप्त ऊष्मा 1 kg द्रव को उसके ______ पर गैस में बदलने के लिए आवश्यक ऊष्मा है।Same topic · Same subject · Same exam

A liquid starts boiling when its vapour pressure becomes ______ the external atmospheric pressure.द्रव तब उबलना शुरू करता है जब उसका वाष्प दाब बाहरी वायुमंडलीय दाब के ______ हो जाता है।Same topic · Same subject · Same exam

Which change of state occurs during condensation?संघनन के दौरान कौन-सा अवस्था परिवर्तन होता है?Same topic · Same subject · Same exam

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