If for a certain reaction is 30 kJ mol–1 at 450 K, the value of (in JK–1 mol–1) for which the same reaction will be spontaneous at the same temperature is:
1. 70
2. –33
3. 33
4. -70
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyConsider the following processes :
∆H (kJ/mol)
½ A → B + 150
3B → 2C + D –125
E + A → 2D +350
For B + D → E + 2C, ∆H will be-
1. 325 kJ/mol
2. 525 kJ/mol
3. –175 kJ.mol
4. –325 kJ/mol
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor vaporization of water at 1 atmospheric pressure, the values of ∆H and ∆S are 40.63 kJ mol–1 and 108.8 JK–1 mol–1, respectively. The temperature when Gibbs energy change (∆G) for this transformation will be zero, is -
1. 393.4 K
2. 373.4 K
3. 293.4 K
4. 273.4 K
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThree moles of an ideal gas expanded spontaneously into vaccum. The work done will be
1. 3 Joules
2. 9 Joules
3. Zero
4. Infinite
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe following two reactions are known
The value of H for the following reaction
is
1. -43.3 kJ
2. -10.3 kJ
3. +6.2 kJ
4. +10.3 kJ
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch List – I (Equations) with List – II (Type of processes) and select the correct option.
List –I List – II
Equation Type of processes
(a) Kp > Q (i) Non spontaneous
(b) ∆Gº < RT ln Q (ii) Equilibrium
(c) Kp = Q (iii) Spontaneous and endothermic
(d) T > (iv) Spontaneous
Options :
(a) (b) (c) (d)
1. (iii) (iv) (ii) (i)
2. (iv) (i) (ii) (iii)
3. (ii) (i) (iv) (iii)
4. (i) (ii) (iii) (iv)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEqual volumes of two monoatomic gases, A and B, at same temperature and pressure are mixed. The ratio of specific heats (Cp/Cv) of the mixture will be -
1. 1.50
2. 3.3
3. 1.67
4. 0.83
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEntropy change in surroundings when 1.00 mol of is formed under standard conditions. is
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe equilibrium constant for a reaction is 10. The value of will be-
()
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor the reaction ; , the value of for the given reaction would be-
1. 1.6 J
2. - 0.16 KJ
3. 0.16 KJ
4. 1.6 KJ
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology