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MDCAT Chemistry Chapter 7 Reaction Kinetics Online Test MCQs With Answers
Question # 1
NaOH+HCI- NaCI+ H2O. Enthalpy change in the above reaction is called
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Enthalpy of reaction
Enthalpy of Neutralisation
Enthalpy of formation
Enthalpy of combustion
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Question # 2
What is correct about heat of combustion
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It is applicable to gaseous substances only
It is always negative
It is always positive
It is positive in some cases while negative in other
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Question # 3
Change in enthalpy (∆H) of a system can be calculated by
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∆H=∆E - PV
ΔH =ΔE +q
∆H = ∆E - q
∆Η = ΔΕ + P∆V
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Question # 4
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 # 5
Total heat content of a system is called
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Internal energy
Entropy
Enthalpy
All of these
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Question # 6
Enthalpy of neutralization of strong acids and strong bases have same values because
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Neutralization leads to the formation of salt and water
Acids always give rise to H+ and bases always furnish OH-
Strong acids and bases are ionic substances
The net change involves the combination of H and OH ions to form water
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Question # 7
The enthalpies of all elements in their standard states are
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Unity
always +ve
always -ve
zero
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Question # 8
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 # 9
Enthalpy of neutralization (∆H°n) per mole of H2SO4/ Ba(OH)2 is
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+57.4 kJmol-1
-114.8 kJmol-1
-57.4 kJmol-1
-57.4 kJmol-1
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Question # 10
The values of ∆H for the process l(g)+e-1--------->
I-1(g) is:
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>0
<0
0
None
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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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