Borax Bead Test in Chemistry
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Questions and Answers

What is the purpose of the Borax Bead Test?

  • To test the solubility of sodium carbonate
  • To form a colored bead for identification purposes
  • To prepare a bead of borax for chemical analysis
  • To detect the presence of metals by fusing the sample in the bead (correct)
  • In the Borax Bead Test, what causes the color in the bead that helps identify the metal present?

  • Borate ion (BO2) (correct)
  • Metaborate formed
  • Orthophosphate formed
  • Sodium carbonate
  • Which element reacts with bromide ion (Br2) to form a colored compound during the Borax Bead Test?

  • Cobalt (correct)
  • Chlorine
  • Magnesium
  • Iron
  • What happens when chlorine water reacts with bromide ion (Br2)?

    <p>Bromide ion converts to free bromine (Br2)</p> Signup and view all the answers

    Which chemical compound does Fe(NO3)3 oxidize among the following ions?

    <p>Iodide ion</p> Signup and view all the answers

    What is the effect of KMnO4 on bromide ion (Br2) when present in an acidified solution?

    <p>Oxidizes bromide to free bromine (Br2)</p> Signup and view all the answers

    What color does a BROWN Ring form when H2SO4 reacts with 2 NO3 and 4 H2SO4?

    <p>Brown</p> Signup and view all the answers

    Which reagent is used to test for the presence of ammonia when reacting with Nitrate ion?

    <p>Nessler’s Reagent</p> Signup and view all the answers

    What color does Brucine in H2SO4 turn in the absence of Chlorates when interacting with Nitrates?

    <p>Red</p> Signup and view all the answers

    What happens to the pink solution when MnCl2 reacts with NO2 and HCl solutions?

    <p>It turns brown</p> Signup and view all the answers

    Which gas is produced when Dilute HCl solution decomposes?

    <p>NO</p> Signup and view all the answers

    What does AgNO3 solution form in dilute solutions after reacting with the ion?

    <p>White ppt.</p> Signup and view all the answers

    What happens when ARSENATE ION (AsO4) is treated with Ammonium Molybdate Sol’n at 20°-30°C?

    <p>It remains in solution</p> Signup and view all the answers

    What is the effect of Dilute HCl on BORATE ION (BO2)?

    <p>No visible effect</p> Signup and view all the answers

    When heated with HNO3, what does ARSENITE ION (AsO3) form?

    <p>A ppt similar to Arsenate</p> Signup and view all the answers

    What happens when Magnesia Mixture is added to BROMIDE ION (Br2) solution?

    <p>It remains in solution</p> Signup and view all the answers

    What is the reaction of ARSENITE ION (AsO3) with KI solution?

    <p>Forms I2 gas</p> Signup and view all the answers

    How does BORATE ION (BO2) react with AgNO3 in a slightly acidic solution?

    <p>Forms a white precipitate</p> Signup and view all the answers

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