1
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
2
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
3
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
4
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The percentage of bromine in the compound is: (at. Mass Ag = 108; Br = 80)
A
48
B
60
C
36
D
24
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