EASY
11th CBSE
IMPORTANT
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The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound         

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Important Questions on Thermodynamics

EASY
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Multiple Choice Questions (Type-I)>Q 13
Enthalpy of sublimation of a substance is equal to 
EASY
11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Multiple Choice Questions (Type-I)>Q 14
Which of the following is not correct? 
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11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Multiple Choice Questions (Type-II)>Q 15
Thermodynamics mainly deals with
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11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Multiple Choice Questions (Type-II)>Q 16
In an exothermic reaction, heat is evolved, and system loses heat to the surrounding. For such system
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11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Multiple Choice Questions (Type-II)>Q 17
The spontaneity means, having the potential to proceed without the assistance of external agency. The processes which occur spontaneously are
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11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Multiple Choice Questions (Type-II)>Q 18
For an ideal gas, the work of reversible expansion under isothermal condition can be calculated by using the expression w =– nRT ln VfVt. A sample containing 1.0 mol of an ideal gas is expanded isothermally and reversibly to ten times of its original volume, in two separate experiments. The expansion is carried out at 300 K and at 600 K respectively. Choose the correct option.
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11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Multiple Choice Questions (Type-II)>Q 19

Consider the following reaction between zinc and oxygen and choose the correct options out of the options given below : 

2 Zn s+O2 g→ 2 ZnO s ; ∆H = – 693.8 kJ mol-1.

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11th CBSE
IMPORTANT
NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 20
18.0 g of water completely vapourises at 100°C and 1 bar pressure and the enthalpy change in the process is 40.79 kJ mol-1. What will be the enthalpy change for vapourizing two moles of water under the same conditions? What is the standard enthalpy of vapourization for water?