Back to PRACTICAL CHEMISTRY

NEET UG CHEMISTRY MCQ: PRACTICAL CHEMISTRY

1 Hard

1 of 1

Application +4 | -1

Moles of

\mathrm{KHC}_2 \mathrm{O}_4

required to reduced 100 ml of 0.02 Molar

\mathrm{KMnO}_4

in acidic medium to

\mathrm{Mn}^{+2}

is

View answer and explanation

Correct option: B

0.005

Option B (0.005) is correct because the balanced equation shows that 2 moles of KMnO4 react with 5 moles of KHC2O4 in acidic medium.

More Questions from PRACTICAL CHEMISTRY

Practice All Chapter MCQs →

A pale green crystalline inorganic salt (A) dissolves freely in water. It gives a brown precipitate on addition of aqueous

\mathrm{NaOH}.

The solution of (A) also gives a black precipitate on bubbling

\mathrm{H}_2 \mathrm{S}

in alkaline medium. An aqueous solution of the (A) decolorizes the pink colour of the permanganate solution. The metal in the salt solution is

100 \mathrm{~ml}

\mathrm{NaHC}_2 \mathrm{O}_4

50 \mathrm{~ml}

0.1 \mathrm{~M} \, \mathrm{KMnO}_4

solution in acidic medium. Volume of

0.1 \mathrm{~M} \mathrm{~NaOH}

100 \mathrm{~ml}

\mathrm{NaHC}_2 \mathrm{O}_4

is The ion that cannot be precipitated by both

{HCl}

{H}_2 {S}

is The rapid change of pH near the stoichiometric point of an acid-base titration in the basis of indicator detection. pH of the solution is related to ratio of the concentrations of the conjugated acid

(HIn)

(In)

forms of the indicator by the expression. On heating colourless solid

A,

B

(liquid at room temp.) and gas

C

A

is decomposed by

\mathrm{NaOH}

on heating to form gas

D

giving white fumes with

\mathrm{HCl}.

{C}

800 \mathrm{~ml} / \mathrm{g}

at N.T.P. Hence

A

HCl

solution is titrated to a pink phenolphthalein endpoint by adding a

\mathrm{NaOH}

solution while stirring. If a solution becomes pink throughout but loses its color upon standing for a short time, what should be done to restore the color?