CHAPTER NO.11 THERMOCHEMISTRY

1.	ΔH per mole is expressed in the units of kJ a. oF b. 0C c. K	A
2.	Which one of the following is not a state function a. Enthalpy b. Heat and work c. Temperature d. pressure	B
3.	for solids and liquids ΔH a. = ΔE b. > ΔE c. <tE d. ΔE = 0	A
4.	1 k cal is equal to a. 418 x 103 J b. 41.8 x 103 J c. 4.18 x 103 J d. 0.418 x 103 J	C
5.	Standard enthalpy for one mole of a substance which exists in its natural state at 1 atm pressrure is measure at a. 0K b. 298 K c. 273 K Non of these	B
6.	ΔH can be measured indirectly by applying a. Avogadro’s law b. Gas laws c. Hess’s law d. Faraday’s law	A
7.	Enthalpy means a. Disorder b. Transition state c. Rate constant d. Heat content	D
8.	No work is done at constant a. Pressure b. Volume c. temperature d. mass	B
9.	heat capacity depends on a. pressure b. volume c. composition d. mass	D
10.	which one of the following reaction is spontaneous a. endothermic b. exothermic c. reversible d. irreversible	B
11.	the energy exhibited by water in a dam is a. potential energy b. kinetic energy c. electric energy d. heat energy	A
12.	when heat is absorbed from the surrounding, the process is a. Reversible b. Mechanical c. Exothermic d. endothermic	D
13.	a spontaneous reaction is one, which is accompanied by a. lowering of energy b. increase of energy c. lowering of volume d. increase of volume	A
14.	the sum of al energies of all the molecules or atoms of a substance is called its a. specific heat b. heat capacity c. latent heat d. internal energy	D
15.	which one of the following process has ΔH positive a. ionization energy b. electron affinity c. combustion d. exothermic reactions	A
16.	which one of the following is example of non-spontaneous change a. aging b. gas mixing c. bringing water uphill d. all of these	C
17.	which one of the folloqing show first law of thermodynamics a. q = ΔE  + W b. q = ΔE  - W c. q = - ΔE  + W d. non of these	A
18.	the unit of work and heat is a. Nm b. J c. Nm-2 m3 d. All of these	D
19.	Standard heat of neutralization is a. 890 KJ/mol b. -57.4 KJ/mol c. -23 KJ/mol d. Non of these	B
20.	1 dm3 atm = a. 101.35 J b. 101.35 KJ c. 100 KJ d. 60 J	A
21.	When one mole od ideal gas expand from 15 dm3 to 20 dm3 against constant pressure of 2 atm. The word=k done is a. 2 atm dm3 b. 4 atm dm3 c. 5 atm dm3 d. 10 atm dm3	D
22.	The amount of heat absorbed by 1g of a substance to raise the temperature by one degree a. Heat capacity b. Specific heat c. The molar heat capacity d. Non of these	B
23.	The SI unit of heat capacity is a. JK b. J/K c. K/J d. JKK	B
24.	Heat of reaction = a. Heat of product x heat of reactant b. Heat of reactant – heat of product c. Heat of product – heat of reactant	C
25.	Heat of product/heat of reactant q = a. nc b. n ΔT c. n C ΔT d. n C / ΔT	C