1
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
Experimentally it was found that a metal oxide has formula M0.98O. Metal M, present as M2+ and M3+ in its oxide. Fraction of the metal which exists as M3+ would be
A
7.01%
B
4.08%
C
6.05%
D
5.08%
2
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M) HCl will be:
A
1.00 M
B
1. 75 M
C
0.975 M
D
0.875 M
3
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
The density of a solution prepared by dissolving 120 g of urea (mol. Mass = 60 u ) in 1000g of water is 1.15 g/mL. The molarity of this solution is :
A
0.50 M
B
1.78 M
C
1.02 M
D
2.05 M
4
AIEEE 2011
MCQ (Single Correct Answer)
+4
-1
A 5.2 molal aqueous solution of methyl alcohol, CH3OH, is supplied. What is the mole fraction of methyl alcohol in the solution ?
A
0.190
B
0.086
C
0.050
D
0.100
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