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The quiz is designed for Qualitative Analysis chapter for JEE Main level.
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Question 1 of 15
1. Question
4 pointsWhich of the following is incorrect statement regarding chromyl chloride test?
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Question 2 of 15
2. Question
4 pointsH2O2 restores the colour of old lead paintings, blackened by the action of H2S, by:
(a) converting PbO2 by Pb (b) oxidizing PbS to PbSO4
(c) converting PbCO3 to Pb (d) oxidizing PbSO3 to PbSO4
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Question 3 of 15
3. Question
4 pointsThe carbonate which decomposes on heating into oxide is
(a) Li2CO3 (b) Na2CO3 (c) K2CO3 (d) CsCO3
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Question 4 of 15
4. Question
4 pointsIf NaOH is added to an aqueous solution of Zn2+ ions, a white precipitate appears and on adding excess NaOH, the precipitate dissolves. In this solution zinc exists in the
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Question 5 of 15
5. Question
4 pointsWhen Cl2 water is added to an aqueous solution of potassium halide in presence of chloroform, a violet colour is obtained. On adding more of Cl2 water, the violet colour disappears and a colourless solution is obtained. This test confirms the presence of the following in aqueous solution:
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Question 6 of 15
6. Question
4 pointsA pale green crystalline inorganic salt (A) dissolves freely in water. It gives a brown precipitate on addition of aqueous NaOH. The solution of (A) also gives a black precipitate on bubbling H2S in alkaline medium. An aqueous solution of (A) decolourises the pink colour of the permanganate solution. The metal in the salt solution is:
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Question 7 of 15
7. Question
4 pointsNa2S makes sodium nitroprusside solution purple due to formation of
(a) Na2[Fe(CN)5NO] (b) Na4[Fe(CN)5NO]
(c) Na4[Fe(CN)5NOS] (d) Na2[Fe(CN)5NOS]
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Question 8 of 15
8. Question
4 pointsWhen HBr reacts with H2SO4, the gas or gases evolved is / are
(a) H2 and Br2 (b) SO2 and Br2
(c) Only Br2 (d) Only SO2
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Question 9 of 15
9. Question
4 pointsCuSO4 solution reacts with KCN to form a complex
(a) Cu(CN)2 (b) Cu(CN)
(c) K2[Cu(CN)4] (d) K3[Cu(CN)4]
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Question 10 of 15
10. Question
4 pointsA metal gives two chlorides ‘A’ and ‘B’. ‘A’ gives black precipitate with NH4OH and ‘B’ gives white. With KI ‘B’ gives a red precipitate soluble in excess of KI. ‘A’ and ‘B’ are respectively
(a) HgCl2 and Hg2Cl2 (b) Hg2Cl2 and HgCl2
(c) HgCl2 and ZnCl2 (d) ZnCl2 and HgCl2
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Question 11 of 15
11. Question
4 pointsWhich of the following does not respond to the ring test?
(a) NaNO3 (b) KNO3 (c) Pb(NO3)2 (d) LiNO3
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Question 12 of 15
12. Question
4 pointsWhich of the following does not respond to the ring test?
(a) NaNO3 (b) KNO3
(c) Pb(NO3)2 (d) LiNO3
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Question 13 of 15
13. Question
4 pointsBorax bead, when fused with metallic oxides, forms the corresponding :-
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Question 14 of 15
14. Question
4 pointsA salt is heated first with dil. H2SO4 and then with conc. H2SO4. No reaction takes place. It may be
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Question 15 of 15
15. Question
4 pointsA mixture when heated with dil H2SO4 gives vapours which turn starch iodide paper blue. This is a test for the radical :
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