1
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
The following reaction is performed at 298 K
2NO(g) + O2 (g) $$\leftrightharpoons$$ 2NO2 (g)
The standard free energy of formation of NO(g) is 86.6 kJ/mol at 298 K. What is the standard free energy of formation of NO2(g) at 298 K? (KP = 1.6 × 1012)
A
86600 + R(298) ln(1.6 $$\times$$ 1012)
B
86600 - $$ln (1.6 \times 10^{12}) \over R (298)$$
C
0.5[2×86,600 – R(298) ln(1.6×1012)]
D
R(298) ln(1.6×1012) – 86600
2
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
The molecular formula of a commercial resin used for exchanging ions in water softening is C8H7SO3Na (Mol. Wt. 206). What would be the maximum uptake of Ca2+ ions by the resin when expressed in mole per gram resin?
A
2/309
B
1/412
C
1/103
D
1/206
3
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?
A
BeSO4
B
BaSO4
C
SrSO4
D
CaSO4
4
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
From the following statements regarding H2O2, choose the incorrect statement :
A
It decomposes on exposure to light
B
It has to be stored in plastic or wax lined glass bottles in dark
C
It has to be kept away from dust
D
It can act only as an oxidizing agent
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