IIT-JEE 2001 Screening | Some Basic Concepts of Chemistry Question 24 | Chemistry

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IIT-JEE 2001 Screening

MCQ (Single Correct Answer)

-0.5

In the standardization of Na₂S₂O₃ using K₂Cr₂O₇ by iodometry, the equivalent weight of K₂Cr₂O₇ is:

(molecular weight)/2

(molecular weight)/6

(molecular weight)/3

Same as molecular weight

IIT-JEE 1991

MCQ (Single Correct Answer)

-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

Both S and E are true, and E is the correct explanation of S.

Both S and E are true, and E is not the correct explanation of S.

S is true but E is false

S is false but E is true

IIT-JEE 1991

MCQ (Single Correct Answer)

-0.25

The oxidation state of the most electronegative element in the products of the reaction. BaO₂ with dil. H₂SO₄ are

0 and -1

-1 and -2

-2 and 0

-2 and -1

IIT-JEE 1988

MCQ (Single Correct Answer)

-0.25

In which mode of expression, the concentration of a solution remains independent of temperature?

Molarity

Normality

Formality

Molality

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