1
IIT-JEE 1981
MCQ (Single Correct Answer)
+1
-0.25
The ratio of root mean square velocity to average velocity of a gas molecule at a particular temperature is
A
1.086:1
B
1:1.086
C
2:1.086
D
1.086:2
2
IIT-JEE 1981
MCQ (Single Correct Answer)
+1
-0.25
A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of
A
sodium atoms
B
sodium hydride
C
sodium amide
D
solvated electrons
3
IIT-JEE 1981
Subjective
+1
-0
Give reasons of the following:
Sodium carbonate is made by Solvay process but the same process is not extended to the manufacture of potassium carbonate.
4
IIT-JEE 1981
Subjective
+3
-0
The vapour pressure of pure benzene is 639.7 mm of mercury and the vapour of a solution of a solute in benzene at the same temperature is 631.9 mm of mercury. Calculate this molality of the solution.
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