Joule-Thomson coefficient ()H for an ideal gas is:
1. zero
2. +ve
3. -ve
4. none of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAll the three states H2O, i.e., the triple point for H2O the equilibrium,
Ice WaterVapour exist at:
1. 3.85 mm and 0.0981 C
2. 4.58 mm and 0.0098 C
3. 760 mm and 0C
4. none of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe unit of van der Waals' constant 'a' is:
1. atm litre2 mol-2
2. dyne cm4 mol-2
3. newton m4 mol-2
4. All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe unit of van der Waals' constant 'b' is :
1. cm3 mol-1
2. litre mol-1
3. m3 mol-1
4. all of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAt STP, 0.50-mole H2 gas and 1.0 mole He gas
1. have equal average kinetic energies
2. have equal molecular speeds
3. occupy equal volumes
4. have equal effusion rates
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe beans are cooked in pressure cooker, because -
1. Boiling point increases with increasing pressure
2. Boiling point decreases with increasing pressure
3. Extra pressure of pressure cooker softens the beans
4. Internal energy is not lost while cooking in pressure cooker
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn ideal gas cannot be liquified because
1. its critical temperature is always above 0C
2. its molecules are relatively smaller in size
3. it solidifies before becoming a liquid
4. forces operating between its molecules are negligible
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe compressibility factor for H2 and He is usually:
1. >1
2. =1
3. <1
4. either of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBoyle's law is applicable in :
1. Isobaric process
2. Isochoric process
3. Isothermal process
4. Adiabatic process
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe temperature of the gas is raised from 27C to 927C the root mean square velocity is
1. times of the earlier value
2. same as before
3. halved
4. doubled
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology