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Class 11
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Qualitative Analysis of Cations
Qualitative Analysis of Cations
Theory
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1)
Which one of the following is Group zero cation?
Mg²⁺
Pb²⁺
As³⁺
NH₄⁺
2)
Which ion gives grassy green color with non - luminous flame?
Ba²⁺
Ca²⁺
NH₄⁺
Mg²⁺
3)
Which one of the following is a colored basic radical (cation)?
Fe³⁺
Zn²⁺
NH₄⁺
Al³⁺
4)
Ca²⁺ ion gives_________color with non - luminous flame.
Pink-violet
Brick-red
Crimson-red
Golden yellow
5)
Which one of the following reagent is used to test the presence of ammonium ion in a given salt?
Potassium ferrocyanide
Ammonium thiocyanate
Dimethyl glyoxime
Nessler’s reagent
6)
What is the name of the product obtained by the reaction of lead ion with potassium chromate solution?
Lead oxide
Lead chromate
Lead dichromate
Lead iodide
7)
Which one of the following salt gives pink ash in cobalt nitrate test?
Aluminium salt
Magnesium salt
Ammonium salt
Zinc salt
8)
What is the group reagent for Group III?
Dilute HCl
H₂S in the presence of dilute HCl
NH₄OH in the presence of NH₄Cl
H₂S in the presence of NH₄Cl and NH₄OH
9)
Which one of the following cation gives flesh coloured precipitate with H₂S gas in presence of NH₄Cl and and NH₄OH?
Zn²⁺
Co²⁺
Mn²⁺
Ni²⁺
10)
Which one of the following ion forms bright red complex with dimethyl glyoxime?
Iron (III) ion
Copper (II) ion
Nickel (II) ion
Manganese (II) ion
11)
Which one of the following cation is not present in Group II?
Zn²⁺
Cu²⁺
As³⁺
Pb²⁺