Chemical Principles Involved in the Qualitative Salt Analysis - Cations and Anions NEET Questions

Organic Chemistry - Principles of Practical Chemistry

Chemical Principles Involved in the Qualitative Salt Analysis - Cations and Anions MCQ Questions


7.
Ammonium molybdate is used for detection of:
A.
Phosphate ions
B.
Sulphate ions
C.
Carbonate ions
D.
Nitrate ions
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ANSWER :
A. Phosphate ions
8.
Which ion gives a white precipitate soluble in excess NaOH but not in NH₄OH?
A.
Pb²⁺
B.
Zn²⁺
C.
Al³⁺
D.
Mg²⁺
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ANSWER :
C. Al³⁺
9.
Confirmatory test for carbonate involves:
A.
Effervescence with acid
B.
Formation of ppt with AgNO₃
C.
Formation of blue color with starch
D.
Evolution of gas with H₂SO₄
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ANSWER :
A. Effervescence with acid
10.
Which cation forms a black precipitate with H₂S in acidic medium?
A.
Cd²⁺
B.
Pb²⁺
C.
Fe³⁺
D.
Cu²⁺
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ANSWER :
D. Cu²⁺
11.
Which group reagent is used for detection of group I cations?
A.
HCl
B.
NH₄Cl + NH₄OH
C.
H₂S
D.
Na₂CO₃
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ANSWER :
A. HCl
12.
Which of the following gives white ppt with BaCl₂ that is insoluble in HCl?
A.
NO₃⁻
B.
CO₃²⁻
C.
SO₄²⁻
D.
Cl⁻
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ANSWER :
C. SO₄²⁻