1
IIT-JEE 2001 Screening
MCQ (Single Correct Answer)
+2
-0.5
In the standardization of Na2S2O3 using K2Cr2O7 by iodometry, the equivalent weight of K2Cr2O7 is:
A
(molecular weight)/2
B
(molecular weight)/6
C
(molecular weight)/3
D
Same as molecular weight
2
IIT-JEE 1991
MCQ (Single Correct Answer)
+1
-0.25
The oxidation state of the most electronegative element in the products of the reaction. BaO2 with dil. H2SO4 are
A
0 and -1
B
-1 and -2
C
-2 and 0
D
-2 and -1
3
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
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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