# MCQ Questions for Class 11 Physics Chapter 11 Thermal Properties of Matter with Answers

Here you will find NCERT MCQ Questions for Class 11 Physics with Answers PDF Free Download based on the important concepts and topics given in the textbook as per CBSE new exam pattern. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Class 11 Physics. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

## Q1. Sweet makers do not clean the bottom of cauldron because

a) black and rough surface absorbs more heat
b) absorption power of black and bright surface is more.
c) transmission power of black and rough surface is more.
d) emission power of black and bright surface is more

a) black and rough surface absorbs more heat

## Q2. 4200 J of work is required for

a) increasing the temperature of 100 g of water through 10°C
b) increasing the temperature of 1 kg of water through 10°C
c) increasing the temperature of 500 g of water through 10°C
d) increasing the temperature of 10 g of water through 10°C

a) increasing the temperature of 100 g of water through 10°C

## Q3. The latent heat of vaporization of a substance is always

a) greater than its latent heat of fusion
b) less than its latent heat of fusion
c) greater than its latent heat of sublimation
d) equal to its latent heat of sublimation

a) greater than its latent heat of fusion

a) II and III
b) None of these
c) I and II
d) III and IV

a) II and III

## Q5. A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as

a) latent heat of fusion
b) sublimation
c) latent heat
d) hoar frost

a) latent heat of fusion

## Q6. Newton’s law of cooling is applicable for

a) small excess of temperature over the surrounding
b) large excess of temperature over the surrounding
c) None of these
d) any excess of temperature over the surrounding

a) small excess of temperature over the surrounding

## Q7. A person with dark skin as compared to a person with white skin will experience

(a) Less heat and less cold
(b) More heat and more cold
(c) More heat and less cold
(d) Less heat and more cold.

(b) More heat and more cold

## Q8. A cup of tea cools from 80°C to 60°C in one minute. The ambient temperature is 30°C. in cooling from 60°C to 50°C, it will take.

(a) 50 sec
(b) 90 sec
(c) 60 sec
(d) 30 sec

(a) 50 sec

Q9. Two marks on a glass rod 10 cm apart are found to increase their distance by 0.08 mm when the rod is heated from 0°C to 100°C. A flask made of the same glass as that of rod measures a volume of 1000 cc at 0°C. The volume it measures at 100°C in cc is

a) 1002.4
b) 1008.2
c) 1004.2
d) 1006.4

a) 1002.4

## Q10. The best ideal black body is

(a) Lamp of charcoal heated to high temperature
(b) Metal coated with a black dye
(c) Glass surface coated with coalter
(d) Hollow enclosure blackened inside and having a small hole

(d) Hollow enclosure blackened inside and having a small hole

(a) 2
(b) 4
(c) 8
(d) 16

(d) 16

(a) Conduction
(b) Convection
(d) Reflection

(b) Convection

(a) W/ m K²
(b) W/ m² K²
(c) W²/ m² K4
(d) W/ mK

(b) W/ m² K²

a) 40°C
b) 100°C
c) 313°C
d) 0ºC

a) 40°C

## Q15. Expansion during heating

a) generally decreases the density of a material
b) None of these
c) increases the weight of a material
d) occurs only in solids

a) generally decreases the density of a material

## Q16. Which of the following will expand the most for same rise in temperature?

a) Aluminium
b) Wood
c) Glass
d) All will expand same

a) Aluminium

a) 500°C
b) 334°C
c) 1000°C
d) 167°C

a) 500°C

## Q18. Assertion: The triple point of water is a standard fixed point in modern thermometry.Reason: The triple point of a substance is unique i.e. it occurs at one particular set of values of pressure and temperature

a) Assertion is correct, reason is correct; reason is a correct explanation for assertion
b) Assertion is incorrect, reason is correct
c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
d) None of these

a) Assertion is correct, reason is correct; reason is a correct explanation for assertion

a) gets larger
b) gets deformed
c) gets smaller
d) None of these

a) gets larger

## Q20.A solid ball of metal has a spherical cavity inside it. The balln is heated. The volume of cavity will

a) increase
b) decrease
c) remain unchanged
d) have its shape changed

a) increase

## Q21. Assertion : Water kept in an open vessel will quickly evaporate onthe surface of the moon.Reason : The temperature at the surface of the moon is much higher than boiling point of the water.

a) Assertion is correct, reason is incorrect
b) None of these
c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

a) Assertion is correct, reason is incorrect

## Class 11 Physics MCQs Questions with Answers Chapter Wise

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