1
IIT-JEE 1991
MCQ (Single Correct Answer)
+2
-0.5
Read the following statement and explanation and answer as per the options given below:

STATEMENT (S): In the titration of Na2CO3 with HCl using methyl orange indicator, the volume required at the equivalence point is twice that of the acid required using phenolphthalein indicator.

EXPLANATION (E): Two moles of HCl are required for the complete neutralization of one mole of Na2CO3
A
Both S and E are true, and E is the correct explanation of S.
B
Both S and E are true, and E is not the correct explanation of S.
C
S is true but E is false
D
S is false but E is true
2
IIT-JEE 1990
MCQ (Single Correct Answer)
+1
-0.25
The oxidation number of phosphorus in Ba(H2PO2) is :
A
+3
B
+2
C
+1
D
-1
3
IIT-JEE 1988
MCQ (Single Correct Answer)
+1
-0.25
The equivalent weight of MnSO4 is half of its molecular weight, when it converts to
A
Mn2O3
B
MnO2
C
$$MnO_4^ - $$
D
$$MnO_4^{2 - }$$
4
IIT-JEE 1988
MCQ (Single Correct Answer)
+1
-0.25
In which mode of expression, the concentration of a solution remains independent of temperature?
A
Molarity
B
Normality
C
Formality
D
Molality
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