Standard enthalpy of vaporization for water at 1000C is 40.66 Kj mol-1. The internal energy of vaporization of water at 1000C (in kJ mol-1) is
(Assume water vapour to behave like an ideal gas).
1. +37.56
1. -43.76
3. +43.76
4. +40.66
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is the correct option for free expansion of an ideal gas under adiabatic condition?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven the following reaction:
The enthalpy change for the reaction is -869.6 kJ. The dissociation energy of the H-H bond is -
1. -869.6 kJ
2. +434.8kJ
3. +217.4kJ
4. -434.8 kJ
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyStandard entropies of X2, Y2 and XY3 are 60, 40 and 50JK-1mol-1 respectively. For the reaction
to be at equilibrium, the temperature should be
1. 750 K
2. 1000 K
3. 1250 K
4. 500 K
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFrom the following bond energies :
H—H bond energy: 431.37 kJ mol-1
C=C bond energy: 606.10 kJ mol-1
C—C bond energy: 336.49 kJ mol-1
C—H bond energy: 410.50 kJ mol-1
Enthalpy for the reaction,
will be
1. 1523.6 kJ mol-1
2. -243.6 kJ mol-1
3. -120.0 kJ mol-1
4. 553.0 kJ mol-1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe values of ΔH and ΔS for the reaction, C(graphite) + CO2(g)→2CO(g) are 170 kJ and 170 JK-1, respectively. This reaction will be spontaneous at
1. 710 K
2. 910 K
3. 1110 K
4. 510 K
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. (I) and (IV)
2. (II), (III) and (IV)
3. (I), (II) and (III)
4. (II) and (III)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. ΔH = 0 and ΔS < 0
2. ΔH > 0 and ΔS > 0
3. ΔH < 0 and ΔS < 0
4. ΔH > 0 and ΔS < 0
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. 1.968 V
2. 2.0968 V
3. 1.0968 V
4. 0.0968 V
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. 93 kJ mol-1
2. - 245 kJ mol-1
3. -93 kJ mol-1
4. 245 kJ mol-1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology