IIT-JEE 1991 | Some Basic Concepts of Chemistry Question 37 | Chemistry

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

IIT-JEE 1986

MCQ (Single Correct Answer)

-0.25

A molal solution is one that contains one mole of solute in

1000 g of solvent

1.0 L of solvent (1986, 1M)

1.0 L of solution

22.4 L of solution

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