1
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
18 g glucose (C6H12O6) is added to 178.2 g water. The vapor pressure of water (in torr) for this aqueous solution is :
A
76.0
B
752.4
C
759.0
D
7.6
2
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
The vapour pressure of acetone at 20oC is 185 torr. When 1.2 g of a non-volatile substance was dissolved in 100 g of acetone at 20oC, its vapour pressure was 183 torr. The molar mass (g mol-1) of the substance is:
A
64
B
128
C
488
D
32
3
JEE Main 2014 (Offline)
MCQ (Single Correct Answer)
+4
-1
Consider separate solutions of 0.500 M C2H5OH(aq), 0.100 M Mg3(PO4)2(aq), 0.250 M KBr(aq) and 0.125 M Na3PO4(aq) at 25oC. Which statement is true about these solutions, assuming all salts to be strong electrolytes?
A
0.125 M Na3PO4(aq) has the highest osmotic pressure.
B
0.500 M C2H5OH(aq) has the highest osmotic pressure
C
They all have the same osmotic pressure
D
0.100 M Mg3(PO4)2(aq) has the highest osmotic pressure.
4
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
Kf for water is 1.86K kg mol–1. If your automobile radiator holds 1.0 kg of water, how many grams of ethylene glycol (C2H6O2) must you add to get the freezing point of the solution lowered to –2.8oC ?
A
72 g
B
93 g
C
39 g
D
27 g
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