1
IIT-JEE 1979
MCQ (Single Correct Answer)
+4
-1
A gaseous mixture contains oxygen and nitrogen in the ratio of 1 : 4 by weight. Therefore the ratio of their no of molecules is
A
1 : 4
B
1 : 8
C
7 : 32
D
3 : 16
2
IIT-JEE 1979
MCQ (Single Correct Answer)
+2
-0.5
The total number of electrons is one molecule of carbon dioxide is
A
22
B
44
C
66
D
88
3
IIT-JEE 1979
Subjective
+2
-0
4.215 g of a metallic carbonate was heated in a hard glass tube and the CO2 evolved was found to measure 1336 ml at 27oC and 700 mm pressure. What is the equivalent weight of metal?
4
IIT-JEE 1979
Subjective
+4
-0
(a). 5.5 g of a mixture FeSO4.7H2O and Fe2(SO4)3.9H2O requires 5.4 ml of 0.1 N KMnO4 solution for complete oxidation. Calculate the number of gram mole of hydrated ferric sulphate in the mixture.

(b). The vapour density (hydrogen = 1) of a mixture consisting of NO2 and N2O4 is 38.3 at 26.7oC. Calculate the number of moles of NO2 in 100 g of the mixure.
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