Combustion of glucose takes place according to the equation,

C6H12O6+6O26CO2+6H2O H = -72 K cal

Energy required for the production of 1.6 g of glucose is -

(Molecular mass of glucose = 180 g)

1. 0.064 kcal

2. 0.64 kcal

3. 6.4 kcal

4. 64 kcal

Subtopic:  Enthalpy & Internal energy |
 81%
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Which plot represents an exothermic reaction?

1.   
2.   

3.    
4.   

Subtopic:  Enthalpy & Internal energy |
 80%
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The enthalpy and entropy change for the reaction :

Br2 (l) + Cl2 (g) 2BrCl (g)

are 30 kJ mol-1 and 105 J K-1 mol-1 respectively.

The temperature at which the reaction will be in equilibrium is :

1. 285.7 K 2. 273.4 K
3. 450.9 K 4. 300.1 K
Subtopic:  Spontaneity & Entropy |
 82%
From NCERT
NEET - 2006
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For the reaction, 2N2g+O2g2N2O(g), at 298K H is 164 kJ mol-1. The E of the reaction is-
1. \(166.5 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
2. \(141.5 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
3. \(104.0 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
4. \(-169 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

Subtopic:  Enthalpy & Internal energy |
 73%
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The bond energies of CC, C-H, H-H, and C=C are 198, 98, 103 and145 kcal respectively.

The enthalpy change of the reaction HCCH+H2C2H4 would be-

1. 48 kcal

2. 96 kcal

3. -40 kcal

4. -152 kcal

Subtopic:  Enthalpy & Internal energy |
 77%
From NCERT
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Which among the following state functions is an extensive property of the system?

1. Temperature 2. Volume
3. Refractive index 4. Viscosity
Subtopic:  Classification of System, Extensive & Intensive Properties |
 78%
From NCERT
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Which, among the following, is not a state function?

1. Internal energy

2. Free energy

3. Work

4. Enthalpy

Subtopic:  Thermodynamics' Properties and process |
 88%
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Which of the following is correct for isothermal expansion of an ideal gas -

1. Wrev = Wirr

2. Wrev + Wirr = 0

3. Wrev > Wirr

4. qrev = qirr

Subtopic:  First Law of Thermodynamics |
 67%
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The correct statement for a reversible process in a state of equilibrium is:
1. G = – 2.30RT log K
2. G = 2.30RT log K
3. Go = – 2.30RT log K
4. Go = 2.30RT log K

Subtopic:  Gibbs Energy Change |
 78%
From NCERT
NEET - 2015
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From 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
Subtopic:  Thermochemistry |
 75%
From NCERT
AIPMT - 2009
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