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	If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then	C<sub>p</sub>- C<sub>v</sub>= R C<sub>p</sub>- C<sub>v < R</sub> C<sub>p</sub>- C<sub>v = 0</sub> C<sub>p</sub>- C<sub>v > R</sub>
2	Triple point of water is	273.16<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°F</span> 372.16K 273.16<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°F</span> 273.16
3	Rate of diffusion is	Faster in solids than in liquids and gases Faster in liquids than in solids and gases Equal to solids, liquids and gases Faster in gases than in liquids and solids
4	Pressure of a gas at constant volume is proportion to	Total energy of gas Average P.E to molecules Average K.E of molecules Total internal energy of gas
5	According to kinetic theory of gases, molecules of a gas behave like	Inelastic spheres Perfectly elastic rigid sphere Perfectly elastic non-rigid spheres Inelastic non-rigid spheres
6	10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?	Each have same number of molecules Don't have same number of molecules Can't be predicted None
7	An isochoric process is one which take place at	Constant internal energy Constant entropy Constant volume Constant pressure
8	Brownian motion increases due to	Increase in size of Brownian particle Increase in temperature of medium Increase in density of medium Increase in viscosity of medium
9	If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is	2 : 1 4 : 1 1 : 4 3 : 4
10	The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at	546 K 273 K 546<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span> 273<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span>
11	Energy gas behaves like an ideal gast at	High temperature and low pressure Low temperature and high pressure Both A and B None
12	R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes	2V 3V 0.5V V
13	Maximum density of H₂O is at the temperature	32<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°F</span> 39.2<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°F</span> 42<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°F</span> 4<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°F</span>
14	At O° K which of the following properties of a gas will be zero?	Kinetic energy Potential energy Vibrational energy Density
15	The product of the pressure and volume of an ideal gas is	A constant Approximately equal to the universal gas constant Directly proportional to its temperature Inversely proportional to its temperature

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