1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
The correct option for the value of vapour pressure of a solution at 45$$^\circ$$C with benzene to octane in molar ratio 3 : 2 is :

[At 45$$^\circ$$C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]
A
350 mm of Hg
B
160 mm of Hg
C
168 mm of Hg
D
336 mm of Hg
2
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
The freezing point depression constant (Kr) of benzene is 5. 12 K kg mol-1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is rounded off upto two decimal places :
A
0.80 K
B
0.40 K
C
0.60 K
D
0.20 K
3
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
The mixture which shows positive deviation from Raoult's law is :
A
Benzene + Toluene
B
Acetone + Chloroform
C
Chloroethane + Bromoethane
D
Ethanol + Acetone
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
For an ideal solution, the correct option is :
A
$$\Delta $$mixH = 0 at constant T and P
B
$$\Delta $$mixG = 0 at constant T and P
C
$$\Delta $$mixS = 0 at constant T and P
D
$$\Delta $$mixV $$ \ne $$ 0 at constant T and P
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