Skip to main content
Back to PRACTICAL CHEMISTRY

NEET UG CHEMISTRY MCQ: PRACTICAL CHEMISTRY

1 Medium
1 of 1
Understanding +4 | -1
A gas is obtained by addition of dil. H2SO4\mathrm{H}_2 \mathrm{SO}_4 to a mixture which turns lead acetate paper black. It is
View answer and explanation
Correct option: A
H2S\mathrm{H}_2 \mathrm{S}
Option A (H2S\mathrm{H}_2 \mathrm{S}) is correct because hydrogen sulfide gas reacts with lead acetate to form lead sulfide, which is a black precipitate.

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 NaOH.\mathrm{NaOH}. The solution of (A) also gives a black precipitate on bubbling H2S\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 ml100 \mathrm{~ml} of NaHC2O4\mathrm{NaHC}_2 \mathrm{O}_4 required 50 ml50 \mathrm{~ml} of 0.1 M KMnO40.1 \mathrm{~M} \, \mathrm{KMnO}_4 solution in acidic medium. Volume of 0.1 M NaOH0.1 \mathrm{~M} \mathrm{~NaOH} required by 100 ml100 \mathrm{~ml} of NaHC2O4\mathrm{NaHC}_2 \mathrm{O}_4 is The ion that cannot be precipitated by both HCl{HCl} and H2S{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)(HIn) and the base (In)(In) forms of the indicator by the expression. On heating colourless solid A,A, gas BB (liquid at room temp.) and gas CC are formed. AA is decomposed by NaOH\mathrm{NaOH} on heating to form gas DD giving white fumes with HCl.\mathrm{HCl}. Gas C{C} occupies 800 ml/g800 \mathrm{~ml} / \mathrm{g} at N.T.P. Hence AA is Standard HClHCl solution is titrated to a pink phenolphthalein endpoint by adding a NaOH\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?
Type at least 2 characters or jump directly:
🔓

Save your learning progress

Sign in with a free account to save your practice answers and quiz results, then return to them when you revise.