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MDCAT Chemistry Chapter 7 Reaction Kinetics Online Test MCQs With Answers
Question # 1
Which of the following enthalpy change always have a negative value
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∆Hf
∆H sol
∆Hc
∆Hat
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Question # 2
The lattice energy of NaCl is
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787 j/ mole
790 kj/mol
780 kJ/ mol
-787 kI / mole
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Question # 3
The measurement of enthalpy change at standard conditions means that we should manage the measurement at
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24°C at 1 atm
25°C at 1 atm
0C° at 1 atm
100C° 1 atm
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Question # 4
If internal energy of the system is increased
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Change in state of the system may occur
Temperature of the system may rise
Chemical reaction may take place
All of these
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Question # 5
Born-Haber cycle is an application of
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Hess's law
1" law of thermodynamics
Avogadro's law
1law of thermochemistry
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Question # 6
For an endothermic reaction, enthalpy of reactants
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Is smaller than that of the products
Is greater than that of the products
Must be greater or smaller than that of the products
Is equal to that of the products
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Question # 7
The change in enthalpy when one mole of a substance is dissolved in a specified quantity of solvent at a given temperature is called
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Heat of reaction
Heat of solvation
Heat of combustion
Heat of solvent
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Question # 8
The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps.it is known as
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Henry's law
Hess's law
joule's law
Law of conservation of energy
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Question # 9
What is not correct about ∆HF
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It is always negative
Ìts value gives an idea about the relative stability of reactants and the products.
Its value can be greater or less than zero
Value depends upon nature of bonds
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Question # 10
One Joule is equivalent to
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4.184 cal.
0.4184cal.
1/2 cal.
1/4.184 cal
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Question # 11
The value of ∆V being very small. The term P∆V can be neglected for process involving
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Liquid and gas
Solids and gases
Liquid and solid
None of these
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