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CBSE 11th Standard Physics Subject Thermal Properties of Matter HOT Questions 1 Mark Questions With Solution 2021

Published on: 29/05/2021

QB365 Provides the HOT Question Papers for Class 11 Physics, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams

Download CBSE Class 11th Standard CBSE Physics question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 11th Standard CBSE Physics

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Std: 11th Standard CBSE - Physics

chapter: - HOT Questions

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Questions:

Generic 2

5 x 2 = 10

When we step barefoot into an office with a marble floor, we feel cold. Why?

Is it possible to convert water into vapour form without increasing its temperature, if temperature and pressure of water are \(30^{ 0 }\) C and 1 atm respectively?

A tightened glass stopper can be taken out easily by pouring hot water around the neck of the bottle. Why?

Calorimeters are made of metals not glass. Why?

Which object will cool faster when kept in open air, the one at 300 \(^{0}\) C or the one of 100 \(^{0}\)C? Why?

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Answers Key:

Generic 2

5 x 2 = 10

This is because marble is a better conductor of heat than concrete. When we walk barefooted on a marble floor, heat flows our body through the feet and we feel cold.

yes, water at 30^oC can be converted into vapour by reducing its pressure until it equals to the vapour pressure of water at 30^oC.

The neck expands but not the stopper due to poor conductivity of glass. Thus, the stopper can be taken out easily.

This is because metals are good conductors of heat and have low specific heat capacity.

The object at 300^oC will cool faster than the object at 100^oC. This is in accordance with Newton’s law of cooling. As we know, rate cooling of an object α temperature between the object and its surroundings.