1
AIEEE 2004
+4
-1
An ideal gas expands in volume from 1$$\times$$10-3 m3 to 1 $$\times$$ 10-2 m3 at 300 K against a constant pressure of 1$$\times$$105 Nm-2. The work done is :
A
-900 J
B
900 kJ
C
270 kJ
D
-900 kJ
2
AIEEE 2004
+4
-1
The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 kJ mol-1 respectively. The enthalpy of formation of carbon monoxide per mole is :
A
110.5 kJ
B
-110.5 kJ
C
-676.5 kJ
D
676.5 kJ
3
AIEEE 2003
+4
-1
The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible path and returns to state A by an irreversible path what would be the net change in internal energy?
A
> 40 kJ
B
< 40 kJ
C
Zero
D
40 kJ
4
AIEEE 2003
+4
-1
If at 298 K the bond energies of C - H, C - C, C = C and H - H bonds are respectively 414, 347, 615 and 435 kJ/mol, the value of enthalpy change for the reaction
H2C = CH2(g) + H2(g) $$\to$$ H3C - CH3(g) at 298 K will be :
A
- 250 kJ
B
+ 125 kJ
C
- 125 kJ
D
+ 250 kJ
EXAM MAP
Medical
NEET