JEE Main & Advanced Chemistry Analytical Chemistry Question Bank

done Wet Test for Acid Radical Total Questions - 41

• question_answer1)
  Which of the following statement(s) is (are) correct when a mixture of \[NaCl\] and \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] is gently warmed with conc. \[{{H}_{2}}S{{O}_{4}}\] [IIT 1998; CPMT 1988; AMU 1984; MP PMT 2002]
  A)
  A deep red vapour is evolved done clear
  B)
  The vapour when passed into \[NaOh\] solution gives a yellow solution of \[N{{a}_{2}}Cr{{O}_{4}}\] done clear
  C)
  Chlorine gas is evolved done clear
  D)
  Chromyl chloride is formed done clear
  View Solution play_arrow

• question_answer2)
  Starch can be used as an indicator for the detection of traces of [CPMT 1992]
  A)
  Glucose in aqueous solution done clear
  B)
  Proteins in blood done clear
  C)
  Iodine in aqueous solution done clear
  D)
  Urea in blood done clear
  View Solution play_arrow

• question_answer3)
  Which of the following combines with \[Fe\] (II) ions to form a brown complex [AIIMS 1982, 87; AFMC 1988; CBSE PMT 2000; Pb. PMT 2000; MP PET 2000, 01]
  A)
  \[{{N}_{2}}O\] done clear
  B)
  \[NO\] done clear
  C)
  \[{{N}_{2}}{{O}_{3}}\] done clear
  D)
  \[{{N}_{2}}{{O}_{5}}\] done clear
  View Solution play_arrow

• question_answer4)
  Sodium nitroprusside, when added to an alkaline solution of sulphide ions, produces purple colour ion due to the formation of [IIT 1995]
  A)
  \[Na\left[ Fe{{\left( {{H}_{2}}O \right)}_{5}}NOS \right]\] done clear
  B)
  \[N{{a}_{2}}\left[ Fe{{\left( {{H}_{2}}O \right)}_{5}}NOS \right]\] done clear
  C)
  \[N{{a}_{3}}\left[ Fe{{\left( CN \right)}_{5}}NOS \right]\] done clear
  D)
  \[N{{a}_{4}}\left[ Fe{{\left( CN \right)}_{5}}NOS \right]\] done clear
  View Solution play_arrow

• question_answer5)
  In the chromyl chloride test, the reagent used is [AMU 1983]
  A)
  \[{{K}_{2}}Cr{{O}_{4}}\] done clear
  B)
  \[Cr{{O}_{3}}\] done clear
  C)
  \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] done clear
  D)
  \[{{\left( N{{H}_{4}} \right)}_{2}}C{{r}_{2}}{{O}_{7}}\] done clear
  View Solution play_arrow

• question_answer6)
  Which of the following will not produce a precipitate with \[AgN{{O}_{3}}\] solution [MP PMT 1990]
  A)
  \[{{F}^{-}}\] done clear
  B)
  \[B{{r}^{-}}\] done clear
  C)
  \[CO_{3}^{2-}\] done clear
  D)
  \[PO_{4}^{3-}\] done clear
  View Solution play_arrow

• question_answer7)
  When a mixture of solid \[NaCl,\] solid \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] is heated with conc. \[{{H}_{2}}S{{O}_{4}},\] orange red vapours are obtained of the compound [CPMT 1974, 78, 81, 88; DPMT 1983, 89; NCERT 1977; AFMC 1982; AMU 1984]
  A)
  Chromous chloride done clear
  B)
  Chromyl chloride done clear
  C)
  Chromic chloride done clear
  D)
  Chromic sulphate done clear
  View Solution play_arrow

• question_answer8)
  Chromyl chloride vapours are dissolved in \[NaOH\] and acetic acid and lead acetate solution is added, then
  A)
  The solution will remain colourless done clear
  B)
  The solution will become dark green done clear
  C)
  A yellow solution will be obtained done clear
  D)
  A yellow precipitate will be obtained done clear
  View Solution play_arrow

• question_answer9)
  Which of the following gives black precipitate when \[{{H}_{2}}S\] gas is passed through its solution [CPMT 1974]
  A)
  Acidic \[AgN{{O}_{3}}\] done clear
  B)
  \[Mg{{(N{{O}_{3}})}_{2}}\] done clear
  C)
  Ammonical \[BaC{{l}_{2}}\] done clear
  D)
  Copper nitrate done clear
  View Solution play_arrow

• question_answer10)
  A salt gives violet vapours when treated with conc. \[{{H}_{2}}S{{O}_{4}}\]. It contains [DPMT 1981; CPMT 1971]
  A)
  \[C{{l}^{-}}\] done clear
  B)
  \[{{I}^{-}}\] done clear
  C)
  \[B{{r}^{-}}\] done clear
  D)
  \[NO_{3}^{-}\] done clear
  View Solution play_arrow

• question_answer11)
  When \[C{{l}_{2}}\] water is added to a salt solution containing chloroform, chloroform layer turns violet. Salt contains [CPMT 1982]
  A)
  \[C{{l}^{-}}\] done clear
  B)
  \[{{I}^{-}}\] done clear
  C)
  \[NO_{3}^{-}\] done clear
  D)
  \[{{S}^{2-}}\] done clear
  View Solution play_arrow

• question_answer12)
  A salt is heated first with dil. \[{{H}_{2}}S{{O}_{4}}\] and then with conc. \[{{H}_{2}}S{{O}_{4}}\]. No reaction takes place. It may be [CPMT 1978]
  A)
  Nitrate done clear
  B)
  Sulphide done clear
  C)
  Oxalate done clear
  D)
  Sulphate done clear
  View Solution play_arrow

• question_answer13)
  Phosphate radical with ammonium molybdate gives precipitate of which colour
  A)
  Violet done clear
  B)
  Pink done clear
  C)
  Canary yellow done clear
  D)
  Green done clear
  View Solution play_arrow

• question_answer14)
  Which compound is soluble in\[N{{H}_{4}}OH\] [AFMC 1987]
  A)
  \[PbC{{l}_{2}}\] done clear
  B)
  \[PbS{{O}_{4}}\] done clear
  C)
  \[AgCl\] done clear
  D)
  \[CaC{{O}_{3}}\] done clear
  View Solution play_arrow

• question_answer15)
  Nitrates of all the metals are [DPMT 1983, 89]
  A)
  Coloured done clear
  B)
  Unstable done clear
  C)
  Soluble in water done clear
  D)
  Insoluble in water done clear
  View Solution play_arrow

• question_answer16)
  Nitrate is confirmed by ring test. The brown colour of the ring is due to the formation of [EAMCET 1979; AFMC 1981, 88, 90; RPET 1999; MP PMT 2000; MP PET 2002; CPMT 2004]
  A)
  Ferrous nitrite done clear
  B)
  \[FeS{{O}_{4}}NO\] done clear
  C)
  \[FeS{{O}_{4}}N{{O}_{2}}\] done clear
  D)
  Ferrous nitrate done clear
  View Solution play_arrow

• question_answer17)
  Which of the following precipitate does not dissolve even in large excess of \[N{{H}_{4}}OH\] [MP PMT 1991]
  A)
  \[AgCl\] done clear
  B)
  \[AgBr\] done clear
  C)
  \[AgI\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer18)
  Aqueous solution of a salt when treated with \[AgN{{O}_{3}}\] solution gives a white precipitate, which dissolves in \[N{{H}_{4}}OH\]. Radical present in the salt is
  A)
  \[C{{l}^{-}}\] done clear
  B)
  \[B{{r}^{-}}\] done clear
  C)
  \[{{I}^{-}}\] done clear
  D)
  \[NO_{3}^{-}\] done clear
  View Solution play_arrow

• question_answer19)
  When \[C{{O}_{2}}\] is passed into lime water it turns milky. When excess of \[C{{O}_{2}}\] is passed, milkyness disappears because
  A)
  Reaction is reversed done clear
  B)
  Water soluble \[Ca{{(HC{{O}_{3}})}_{2}}\] is formed done clear
  C)
  Vaporisable calcium derivative is formed done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer20)
  A mixture when heated with conc. \[{{H}_{2}}S{{O}_{4}}\] with \[Mn{{O}_{2}}\] brown fumes are formed due to
  A)
  \[B{{r}^{-}}\] done clear
  B)
  \[NO_{3}^{-}\] done clear
  C)
  \[C{{l}^{-}}\] done clear
  D)
  \[{{I}^{-}}\] done clear
  View Solution play_arrow

• question_answer21)
  A substance on treatment with dil \[{{H}_{2}}S{{O}_{4}}\] liberates a colourless gas which produces (i) turbidity with baryta water and (ii) turns acidified dichromate solution green. The reaction indicates the presence of [IIT 1992]
  A)
  \[CO_{3}^{2-}\] done clear
  B)
  \[{{S}^{2-}}\] done clear
  C)
  \[SO_{3}^{2-}\] done clear
  D)
  \[NO_{2}^{-}\] done clear
  View Solution play_arrow

• question_answer22)
  In the test of sulphate radical, the white precipitate of sulphate is soluble in
  A)
  Conc. \[HCl\] done clear
  B)
  Conc. \[{{H}_{2}}S{{O}_{4}}\] done clear
  C)
  Conc. \[HN{{O}_{3}}\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer23)
  To an inorganic mixture dil. \[{{H}_{2}}S{{O}_{4}}\] is added in cold; colourless, odourless gas is evolved. The mixture contains [AMU 1982]
  A)
  Sulphite done clear
  B)
  Acetate done clear
  C)
  Nitrite done clear
  D)
  Carbonate done clear
  View Solution play_arrow

• question_answer24)
  Which reagent is used to remove \[SO_{4}^{-}\]and \[C{{l}^{-}}\] [Pb. PMT 2002]
  A)
  \[BaS{{O}_{4}}\] done clear
  B)
  \[NaOH\] done clear
  C)
  \[Pb{{(N{{O}_{3}})}_{2}}\] done clear
  D)
  KOH done clear
  View Solution play_arrow

• question_answer25)
  ........ is formed when potassium iodide is heated with conc. \[{{H}_{2}}S{{O}_{4}}\] [CPMT 1971]
  A)
  \[HI\] done clear
  B)
  \[{{I}_{2}}\] done clear
  C)
  \[HI{{O}_{3}}\] done clear
  D)
  \[KI{{O}_{3}}\] done clear
  View Solution play_arrow

• question_answer26)
  Chromyl chloride test is performed for the confirmation of the presence of the following in a mixture [CPMT 1990; KCET 1992; RPET 1999]
  A)
  Sulphate done clear
  B)
  Chromium done clear
  C)
  Chloride done clear
  D)
  Chromium and chloride done clear
  View Solution play_arrow

• question_answer27)
  A reagent that can distinguish between a chloride and a peroxide is [EAMCET 1976]
  A)
  Water done clear
  B)
  Dil. \[{{H}_{2}}S{{O}_{4}}\] done clear
  C)
  \[KOH\] solution done clear
  D)
  \[NaCl\] done clear
  View Solution play_arrow

• question_answer28)
  Which reagent below would enable you to remove sulphate ions from a solution containing both sulphate and chloride ions [NCERT 1975; CPMT 1979, 81]
  A)
  Sodium hydroxide done clear
  B)
  Barium hydroxide done clear
  C)
  Barium sulphate done clear
  D)
  Potassium hydroxide done clear
  View Solution play_arrow

• question_answer29)
  Ozone when reacts with potassium iodide solution liberates certain product, which turns starch paper blue. The liberated substance is?. [Orrisa JEE 2002]
  A)
  Oxygen done clear
  B)
  Iodine done clear
  C)
  Hydrogen iodide done clear
  D)
  Potassium hydroxide done clear
  View Solution play_arrow

• question_answer30)
  When \[KBr\] is treated with conc. \[{{H}_{2}}S{{O}_{4}}\] a reddish-brown gas is evolved. The evolved gas is [EAMCET 1978]
  A)
  Bromine done clear
  B)
  Mixture of bromine and \[HBr\] done clear
  C)
  \[HBr\] done clear
  D)
  \[N{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer31)
  A solution of a salt in dilute sulphuric acid imparts deep blue colour with starch iodine solution it confirms the presence of which of the following [MP PET 2003; NCERT 1974; CPMT 1977]
  A)
  \[NO_{2}^{\ -}\] done clear
  B)
  \[{{I}^{-}}\] done clear
  C)
  \[NO_{3}^{\ -}\] done clear
  D)
  \[C{{H}_{3}}CO{{O}^{-}}\] done clear
  View Solution play_arrow

• question_answer32)
  Ammonia reacts with excess of chlorine to form [DPMT 2000]
  A)
  \[{{N}_{2}}\]and \[HCl\] done clear
  B)
  \[N{{H}_{4}}Cl\] and \[NC{{l}_{3}}\] done clear
  C)
  \[NC{{l}_{3}}\] and \[HCl\] done clear
  D)
  \[{{N}_{2}}\] and \[N{{H}_{4}}Cl\] done clear
  View Solution play_arrow

• question_answer33)
  A brown ring appears in the test for [EAMCET 1978; KCET 1991; Bihar CEE 1995; AIIMS 1996; DCE 1999]
  A)
  Nitrate done clear
  B)
  Nitrite done clear
  C)
  Bromide done clear
  D)
  Iron done clear
  View Solution play_arrow

• question_answer34)
  Which of the following anions would decolourise acidified \[KMn{{O}_{4}}\] solution
  A)
  \[SO_{4}^{2-}\] done clear
  B)
  \[{{S}^{2-}}\] done clear
  C)
  \[NO_{3}^{-}\] done clear
  D)
  \[C{{H}_{3}}CO{{O}^{-}}\] done clear
  View Solution play_arrow

• question_answer35)
  The gas which is absorbed by ferrous sulphate solution giving blackish brown colour is [AMU 1999]
  A)
  NO done clear
  B)
  CO done clear
  C)
  \[{{N}_{2}}\] done clear
  D)
  \[N{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer36)
  Which one of the following anions is not easily removed from aqueous solutions by precipitation [IIT 1995]
  A)
  \[C{{l}^{-}}\] done clear
  B)
  \[NO_{3}^{-}\] done clear
  C)
  \[CO_{3}^{-2}\] done clear
  D)
  \[SO_{4}^{-2}\] done clear
  View Solution play_arrow

• question_answer37)
  \[N{{a}_{2}}C{{O}_{3}}\] cannot be used to identify [BVP 2004]
  A)
  \[CO_{3}^{2-}\] done clear
  B)
  \[SO_{3}^{2-}\] done clear
  C)
  \[{{S}^{2-}}\] done clear
  D)
  \[SO_{4}^{2-}\] done clear
  View Solution play_arrow

• question_answer38)
  The number of hydroxide ions, produced by one molecule of sodium carbonate \[(N{{a}_{2}}C{{O}_{3}})\] on hydrolysis is [Pb. CET 2002]
  A)
  2 done clear
  B)
  1 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer39)
  Gas \[A\] is bubbled through slaked lime when a white precipitate is formed. On prolonged bubbling, the precipitate is dissolved. on heating the resultant solution, the white precipitate reappears with the evolution of gas \[B\]. The gases \[A\] and \[B\] respectively are [DPMT 2004]
  A)
  \[C{{O}_{2}}\] and \[CO\] done clear
  B)
  \[CO\] and \[C{{O}_{2}}\] done clear
  C)
  \[CO\] and \[CO\] done clear
  D)
  \[C{{O}_{2}}\] and \[C{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer40)
  By passing \[{{H}_{2}}S\] gas in acidified \[KMn{{O}_{4}}\] solution, we get [MP PET 1997]
  A)
  \[{{K}_{2}}S\] done clear
  B)
  \[S\] done clear
  C)
  \[{{K}_{2}}S{{O}_{3}}\] done clear
  D)
  \[Mn{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer41)
  Which of the following doesn't give a ppt. with silver nitrate solution. [J & K 2005]
  A)
  Ethyl bromide done clear
  B)
  Sodium bromide done clear
  C)
  Calcium chloride done clear
  D)
  Sodium chloride done clear
  View Solution play_arrow