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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
Oxygen
B
Ammonia
C
Nitrogen
D
Chlorine
2) What is a metal cation which forms blue precipitate with alkali.
A
Aluminium
B
Iron
C
Copper
D
Lead
3) What is the gas which turns acidified potassium dichromate (VI) from orange to green?
A
Carbon Dioxide
B
Carbon Monoxide
C
Sulfur Monoxide
D
Sulfur 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 anions.
B
They are cations.
C
They are metals.
D
They are amphoteric.
5) What is the process when iron(II) hydroxide becomes iron(III) hydroxide called?
A
Oxidation
B
Reproduction
C
Decompose
D
Power-up!
6) What is the metal to be added when testing for nitrates?
A
Copper(II)
B
Lead(II)
C
Calcium
D
Aluminium
7) Excess ammonia solution is added to an aqueous solution which contains calcium ions and copper(II) ions. What should be observed?
A
Dark blue solution is formed.
B
Blue ppt is formed.
C
White ppt is formed.
D
The mixture is light blue in colour.
8) Effervescence occurred when hydrochloric acid is added to salt X. What is X?
A
MgCl
B
KOH
C
K2CO3
D
NaCl
9) White precipitate formed when several drops of AgNO3 solution is added to salt Y. What is Y?
A
NaCl
B
Na2SO4
C
NaNO3
D
KOH
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
ZnCl2
D
Fe(NO3)2
*select an answer for all questions
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