6 What is qualitative analysis mainly concerned with? A Amount of substance B Nature of substance C Mass of substance D Volume of substance
10 Which test is safest for identifying gases? A Ignition test B Flame test C Litmus test D Heating test
13 Which color is produced by sodium ion in a flame test? A Green B Brick red C Golden yellow D Lilac
14 Which reagent is used to identify ammonium ion? A Silver nitrate B Sodium hydroxide C Barium chloride D Dilute acid
15 Which reagent distinguishes sulfate from carbonate? A Dilute HCl B Barium chloride C Silver nitrate D Sodium hydroxide
21 Which test helps confirm CO₃²⁻ ion? A Silver nitrate test B Flame test C Limewater test D Biuret test
25 Which test helps identify gases by color change? A Flame test B Litmus test C Precipitation test D Density test
26 Which test is commonly used to identify metal ions? A Litmus test B Flame test C Iodine test D Biuret test
28 Which observation confirms ammonium ion? A Pop sound B White precipitate C Pungent smell of ammonia D Green flame
29 Which analysis identifies ions present in a compound? A Qualitative analysis B Quantitative analysis C Thermal analysis D Volumetric analysis
30 Which reagent is added before silver nitrate in chloride test? A NaOH B Dilute nitric acid C Dilute sulfuric acid D Ammonia