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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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