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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

Decreasing external pressure generally ______ the boiling point of a liquid.

बाहरी दाब घटाने पर सामान्यतः द्रव का क्वथनांक ______।

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

A

Decreasesघटता है

✓

B

Increasesबढ़ता है

C

Becomes infiniteअनंत हो जाता है

D

Always remains 100°Cहमेशा 100°C रहता है

Correct Answerसही उत्तर

A. DecreasesA. घटता है

Explanationव्याख्या

A lower external pressure allows the liquid's vapour pressure to equal it at a lower temperature.

कम बाहरी दाब पर द्रव का वाष्प दाब कम तापमान पर ही बाहरी दाब के बराबर हो जाता है। ---

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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

Which of the following can occur below the boiling point of a liquid?निम्नलिखित में से कौन द्रव के क्वथनांक से नीचे भी हो सकता है?Same topic · Same subject · Same exam

What is the effect of adding a suitable non-volatile impurity to a liquid on its boiling point?किसी द्रव में उपयुक्त अवाष्पशील अशुद्धि मिलाने पर उसके क्वथनांक पर क्या प्रभाव पड़ता है?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

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

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

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