ECAT Pre Computer Science Chapter 11 online mcq test with answers for Physics chapter 11 (Heat & Thermodynamics)

ECAT Physics Chapter 11 Heat & Thermodynamics Online Test

Sr. #	Questions	Answers Choice
1	Hotness and coldness of an object is represented in terms:	Heat Temperature Chemical energy None of these
2	A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be	1/2 More than 1/2 Less than 1/2 Between 1 and 2
3	First law of thermodynamics is consequence of conservation of	Work Energy Heat All of these
4	At what temperature the adiabatic change is equivalent to the isothermal change?	Zero degree Celsius Zero Kelvin Critical temperature Above critical temperature
5	First law of thermodynamic is special case of	Law of conservation of energy Charle's law Law of conservation of mass Boyle's law
6	Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure	A greater than than of B A is equal to that of B A is less than that of B A is twice the pressure of B
7	Rice takes longest to cook	In a submarine 100 m below the surface of the sea At sea level At Murree At Mount Everest
8	Melting point of ice	Increases with increasing pressure Decreases with increasing pressure Is independent of pressure Is proportional to pressure
9	An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is	-20<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 6.67<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 5<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 0<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span>
10	Specific heat at constant pressure is greater than the specific heat at constant volume because	Heat is used up to increase temperature at constant pressure Heat is used by gas for expansions purposes at constant pressure Heat is use dup to increase internal energy The above statement is invalid
11	If water in a closed bottle is taken up to the moon and opened, the water gets	Freeze Boiled Dissociated into O<sub>2</sub>and H<sub>2</sub> Evaporated
12	What temperature is the same on Celsius scale as well as on Fahrenheit scale?	32<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> -32<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> -40<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> -212<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span>
13	Amount of heat required to raise the temperature of a body through 1 K is called its	Specific heat Water equivalent Thermal capacity Entropy
14	Good absorbers of heat are	Poor emitters Non emitters Good emitters Highly polarized
15	On a cold morning a metal surface will fell colder to touch than a wooden surface, because	Metal has high specific heat Metal has high thermal conductivity Metal has low specific heat Metal has low thermal conductivity

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