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MDCAT Chemistry Chapter 7 Reaction Kinetics Online Test MCQs With Answers
Question # 1
Most of the reactions which give stable products are
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Endothermic
Exothermic
Isothermal
Non of these
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Question # 2
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 # 3
The change in enthalpy of a system when one mole of the substance is completely burnt in excess of air or oxygen is called
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Heat of reaction
Heat of formation
Heat of atomization
Heat of combustion
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Question # 4
The enthalpy of formation of a compound is
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Positive
Either positive or negative
Negative
None
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Question # 5
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 # 6
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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Question # 7
Whenever a reaction is endothermic, then it means that
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Heat is transferred system to the surrounding
Heat is transferred from surrounding to the system
Heat content of the products is less than that of reactants
Heat content of the reactants is greater than the products
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Question # 8
A system absorbs 100 kJ heat and performs 50 kJ work on the surroundings. The increase in internal energy of the system is
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50kJ
100 kJ
150kJ
5000 kJ
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Question # 9
The exothermic process is
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Evaporation
Sublimation
Respiration
Boiling
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Question # 10
Decomposition of H2O is
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Endothermic reaction
Nuclear reaction
Exothermic reaction
Zero nuclear reaction
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Question # 11
Hess's law is analogous to
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Law of heat summation
law of increasing entropy
Law of heat exchange
Ist law of thermodynamics
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