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Qualitative Analysis (Part 2)
Test Description: QA Quiz Part 2
Instructions: Answer all questions to get your test result.
1) What is a green-yellow, pungent gas which turns damp blue litmus paper red, then bleached?
A
Chlorine
B
Ammonia
C
Oxygen
D
Nitrogen
2) What is a metal cation which forms blue precipitate with alkali.
A
Iron
B
Aluminium
C
Copper
D
Lead
3) What is the gas which turns acidified potassium dichromate (VI) from orange to green?
A
Sulfur Monoxide
B
Sulfur Dioxide
C
Carbon Monoxide
D
Carbon Dioxide
4) What is the reason why zinc hydroxide, aluminium hydroxide and lead(II) hydroxide can dissolve in excess sodium hydroxide solution?
A
They are amphoteric.
B
They are metals.
C
They are cations.
D
They are anions.
5) What is the process when iron(II) hydroxide becomes iron(III) hydroxide called?
A
Decompose
B
Reproduction
C
Power-up!
D
Oxidation
6) What is the metal to be added when testing for nitrates?
A
Lead(II)
B
Aluminium
C
Copper(II)
D
Calcium
7) Excess ammonia solution is added to an aqueous solution which contains calcium ions and copper(II) ions. What should be observed?
A
White ppt is formed.
B
Blue ppt is formed.
C
The mixture is light blue in colour.
D
Dark blue solution is formed.
8) Effervescence occurred when hydrochloric acid is added to salt X. What is X?
A
K2CO3
B
MgCl
C
NaCl
D
KOH
9) White precipitate formed when several drops of AgNO3 solution is added to salt Y. What is Y?
A
KOH
B
NaCl
C
NaNO3
D
Na2SO4
10) Ammonia solution is added in excess to solution X. White ppt dissolves in the excess ammonia solution. What is X?
A
CuCl2
B
NH4Cl
C
Fe(NO3)2
D
ZnCl2
*select an answer for all questions
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