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ICSE Class 10 Analytical Chemistry — practice questions — page 2

Explore 61 free Analytical Chemistry questions in ICSE Class 10 Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Analytical Chemistry questions and exercises with answers

Showing questions 31–60 of 61.

Which result points specifically to sulfite rather than carbonate?Read the answer and worked solution →A white precipitate forms when a sulfate solution is treated with barium chloride. What is the precipitate?Read the answer and worked solution →What property helps confirm barium sulfate in the sulfate test?Read the answer and worked solution →Which reagent is used to test for sulfate ions?Read the answer and worked solution →Which halide forms a white precipitate with silver nitrate?Read the answer and worked solution →Which silver halide precipitate is yellow in the test?Read the answer and worked solution →Among the AgCl, AgBr, and AgI precipitates, which dissolves completely in aqueous ammonia?Read the answer and worked solution →What does a yellow crystalline precipitate with nitric acid and ammonium molybdate indicate?Read the answer and worked solution →Which ion gives reddish-brown nitrogen dioxide fumes with dilute acid?Read the answer and worked solution →What happens to potassium iodide-starch solution in the nitrite gas test?Read the answer and worked solution →What does a qualitative chemical test primarily do?Read the answer and worked solution →What does a precipitate or color change help reveal in qualitative analysis?Read the answer and worked solution →Which pair of cations can both form green hydroxide precipitates?Read the answer and worked solution →In the silver chloride test, what happens when ammonia is added?Read the answer and worked solution →A white chloride precipitate turns black after ammonia is added. Which ion is indicated?Read the answer and worked solution →What happens to limewater milkiness when excess carbon dioxide is passed through it?Read the answer and worked solution →Which pair correctly matches flame colors?Read the answer and worked solution →Which observation can be evidence in a qualitative test?Read the answer and worked solution →Excess aqueous ammonia dissolves Zn(OH)2. What remains?Read the answer and worked solution →What does excess aqueous ammonia do to the lead(II) hydroxide precipitate?Read the answer and worked solution →Excess NaOH is added to freshly precipitated lead(II) hydroxide. What occurs?Read the answer and worked solution →Which gas is released when an ammonium salt is warmed with NaOH?Read the answer and worked solution →Ammonia meets HCl vapour in moist air. What forms the white fumes?Read the answer and worked solution →Gas from an ammonium salt warmed with NaOH meets moist red litmus. What occurs?Read the answer and worked solution →What is the usual colour of aqueous iron(III) chloride?Read the answer and worked solution →A fresh ferrous sulphate heptahydrate sample appears what colour?Read the answer and worked solution →Copper(II) sulphate pentahydrate has which appearance?Read the answer and worked solution →A copper(II) sulphate sample is completely anhydrous. What colour is it?Read the answer and worked solution →NH4Cl is warmed with NaOH. Which salt remains in solution?Read the answer and worked solution →More aqueous ammonia is added to a ferric salt's brown precipitate. What occurs?Read the answer and worked solution →

Worked practice questions

Which result points specifically to sulfite rather than carbonate?

  1. Lead paper: white to black
  2. Litmus: red to blue
  3. Limewater: clear to milky
  4. Dichromate: orange to green
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Correct answer: D. Dichromate: orange to green

The orange-to-green dichromate change is the distinguishing sulfite result.

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A white precipitate forms when a sulfate solution is treated with barium chloride. What is the precipitate?

  1. PbS
  2. AgCl
  3. BaSO4
  4. CaCO3
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Correct answer: C. BaSO4

Barium ions and sulfate ions form white barium sulfate.

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What property helps confirm barium sulfate in the sulfate test?

  1. Releases ammonia
  2. Dissolves in acid
  3. Gives a violet flame
  4. Resists acid and base
Show answer and solution

Correct answer: D. Resists acid and base

Barium sulfate is insoluble in acids and bases, supporting its identification.

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More Chemistry topics

Organic ChemistryPeriodic Table & Periodic PropertiesMetallurgyMole Concept and StoichiometryElectrolysisAcids, Bases and SaltsStudy of Compounds: hydrogen chloride, ammonia, nitric acid, sulphuric acidChemical Bonding