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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

What happens to the temperature of water during boiling at constant atmospheric pressure?

स्थिर वायुमंडलीय दाब पर पानी के उबलने के दौरान उसके तापमान का क्या होता है?

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

A

Remains constantस्थिर रहता है

✓

B

Continuously increasesलगातार बढ़ता है

C

Continuously decreasesलगातार घटता है

D

Immediately becomes 0°Cतुरंत 0°C हो जाता है

Correct Answerसही उत्तर

A. Remains constantA. स्थिर रहता है

Explanationव्याख्या

During boiling, the supplied heat is used as latent heat of vaporisation, so the temperature remains constant until the liquid has vaporised.

क्वथन के दौरान दी गई ऊष्मा वाष्पन की गुप्त ऊष्मा के रूप में प्रयुक्त होती है, इसलिए द्रव के वाष्पित होने तक तापमान स्थिर रहता है। ---

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During boiling of pure water at 100°C at normal atmospheric pressure, additional heat is used mainly for ______.सामान्य वायुमंडलीय दाब पर 100°C पर शुद्ध पानी के उबलने के दौरान अतिरिक्त ऊष्मा मुख्यतः ______ के लिए प्रयुक्त होती 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

During the melting of pure ice at 0°C under constant pressure, the temperature ______ until melting is complete.स्थिर दाब पर 0°C की शुद्ध बर्फ के पिघलने के दौरान, गलन पूरा होने तक तापमान ______।Same topic · Same subject · Same exam

At normal atmospheric pressure, the boiling point of pure water in Kelvin is approximately ______.सामान्य वायुमंडलीय दाब पर शुद्ध पानी का क्वथनांक केल्विन में लगभग ______ है।Same topic · Same subject · Same exam

Which relation between atmospheric pressure and boiling point is generally correct?वायुमंडलीय दाब और क्वथनांक के बीच कौन-सा संबंध सामान्यतः सही है?Same topic · Same subject · Same exam

Why does a pressure cooker raise the boiling point of water?प्रेशर कुकर पानी के क्वथनांक को क्यों बढ़ाता है?Same topic · Same subject · Same exam

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