1

IIT-JEE 2001

Subjective

+5

-0

Hydrogen peroxide solution (20 ml) reacts quantitatively with a solution of KMnO

_{4}solution is just decolourised by 10 ml of MnSO_{4}in neutral medium simultaneously forming a dark brown precipitate of hydrated MnO_{2}. The brown precipitated is dissolved in 10 ml of 0.2 M sodium oxalate under boiling condition in the presence of dilute H_{2}SO_{4}. Write the balanced equations involved in the reactions and calculate the molarity of H_{2}O_{2}.2

IIT-JEE 1999

Subjective

+3

-0

How many millilitres of 0.5 M H

_{2}SO_{4}are needed to dissolve 0.5 g of copper(II) carbonate?3

IIT-JEE 1999

Subjective

+3

-0

A plant virus is found to consist of uniform cylindrical particles of 150 Å in diameter and 5000 Å long. The specific volume of the virus is 0.75 cm

^{3}/g. If the virus is considered to be a single particle, find its molar mass.4

IIT-JEE 1998

Subjective

+5

-0

An aqueous solution containing 0.10 g KIO

_{3}(formula weight = 214.0) was treated with an excess of KI solution. The solution was acidified with HCl. The liberated I_{2}consumed 45.0 mL of thiosulphate solution to decolourise the blue strach-iodine complex. Calculate the molarity of the sodium thiosulphate solution.Questions Asked from Some Basic Concepts of Chemistry (Subjective)

Number in Brackets after Paper Indicates No. of Questions

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IIT-JEE 1978 (5)

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