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Chemical Energetics Thermochemistry Test Online MCQs

Test Name Chemical Energetics Thermochemistry Test
Subject Chemistry
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
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Attempt Chemical Energetics Thermochemistry Test Online MCQs to increase knowledge about the Chemical energetics and Thermochemistry and their mechanism. Get preparation of all the entrance tests, competitive tests, medical tests, engineering tests, admission tests and competitive tests.

Chemical Energetics Thermochemistry Test Online MCQs

Chemistry

1. The heat of neutralization of a strong base and a strong acid is 57 kJ. The heat released when 0.5 mole of HNO₃ solution is added to 0.02 moles of NaOH solution, is:

 

Question 1 of 15

2. The heat of combustion of yellow phosphorous is – 9.91 kJ and of red phosphorous is – 8.78 kJ. The heat of transition of yellow phosphorus to red phosphorus is:

 

Question 2 of 15

3. For the equilibrium H₂O(l) H₂O(g) at 1 atm and 298 K:

 

Question 3 of 15

4. One gram sample of NH₄NO₃ is decomposed in a bomb calorimeter, the temperature of the calorimeter increases by 6.12 K. The heat capacity if the system is 1.23 kJ/g/deg. What is the molar heat of decomposition for NH₄NO₃?

 

Question 4 of 15

5. In the exothermic reaction, the enthalpy of reaction is always:

 

Question 5 of 15

6. For a phase change, H₂O(l) 04 H₂O(s)

 

Question 6 of 15

7. The enthalpy change (∆H) for the reaction, N₂(g) + 3H₂(g) 2NH₃(g) is -92.38 kJ at 298 K. The internal energy change ∆U at 298 K is:

 

Question 7 of 15

8. During isothermal expansion of the mole of an ideal gas from 10 atm top 1 atm at 273 K, the work done is [gas constant = 2]:

 

Question 8 of 15

9. One mole of an ideal gas for which C= (3/2)R is heated reversibly at a constant pressure of 1 atm from 25°C to 100°C. The ∆H is:

 

Question 9 of 15

10. How much energy is released when 6 moles of octane is burnt in air? Given ∆H⁰f for CO₂(g), H₂O(g) and C₈H₁₈(l) respectively are -490, - 240 and + 160 J/mol.

 

Question 10 of 15

11. At 80°C, distilled water (H₃O⁺) has concentration equal to 1 x 10⁻⁶ mole/liter. The value of Kw, at this temperature will be

 

Question 11 of 15

12. For a reaction to be spontaneous at all temperatures

 

Question 12 of 15

13. S + O₂ SO₂ + x kcal             ……………(1)

SO₂ + ½O₂ SO₃ + y Kcal               ……………(2)

The heat of formation of SO₃ in the above reaction is:

 

Question 13 of 15

14. Which of the following is arranged in the increasing order of enthalpy of vaporisation?

 

Question 14 of 15

15. ∆Ssurr for an exothermic reaction is

 

Question 15 of 15


 

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