1
IIT-JEE 1985
MCQ (Single Correct Answer)
+1
-0.25
The oxide that gives hydrogen peroxide on treatment with a dilute acid is
A
PbO2
B
Na2O2
C
MnO2
D
TiO2
2
IIT-JEE 1985
MCQ (Single Correct Answer)
+1
-0.25
Molecular formula of Glauber's salt is:
A
MgSO4.7H2O
B
CuSO4.5H2O
C
FeSO4.7H2O
D
Na2SO4.10H2O
3
IIT-JEE 1985
Subjective
+1
-0
Write down the balanced equations for the reaction when:
Calcium phosphate is heated with a mixture of sand and carbon;
4
IIT-JEE 1985
True or False
+1
-0
If three complex numbers are in A.P. then they lie on a circle in the complex plane.
A
TRUE
B
FALSE
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