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	The efficiency of diesel engine is	25% 25 - 30% 35% 35 - 40%
2	No spark plug is needed in	petrol engine diesel engine both of them none of them
3	The efficiency of petrol engine is usually not more than 25% to 30% because of	friction heat losses both of them none of them
4	On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves	outwards inwards in either way none of these
5	On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands	adiabatically isothermally isochorically isobarically
6	On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed	adiabatically isothermally isochorcally isobarically
7	A typical four stroke petrol engine undergoes how many successive processes in each cycle	one two three four
8	Since the absolute scale is independent of the property of the working substance, hence, can be applied at	very high temperature very low temperature any one of them none of them
9	The state in which ice, water and vapour coexists in equilibrium is called	zero degree celsius zero degree fahrenheit absolute zero 373 K
10	The unit of thermodynamical scale is	centigrade fahrenheit kelvin none of them
11	The absolute temperature of the tripple point of water is	100<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 4<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 373 K 273.16 K
12	The basis to define a temperature scale that is independent of material properties is provided by	carbon cycle nitrogen cycle Carnot cycle irreversible cycle
13	Generally a temperature scale is established by using certain physical properties of a material which varies	nonlinearly with temperature linearly with temperature either of them none of them
14	Generally a temperature scale is established by	one fixed point two fixed point three fixed point four fixed point
15	The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at	100 K 273 K 0 K -273 K

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