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Testing for Ions and Gases (Co-ordinated Science 2019-2021)
By Alvin Ibalio
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Last updated over 7 years ago
30 questions
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Note from the author:
IGCSE Co-ordinated Science Chemistry
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Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
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Question 10
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Question 11
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Question 12
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Question 13
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Question 14
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Question 15
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Question 16
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Question 17
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Question 18
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Question 19
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Question 20
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Question 21
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Question 22
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Question 23
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Question 24
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Question 25
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Question 26
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Question 27
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Question 28
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Question 29
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Question 30
30.
A acidify with dilute nitric acid, then add aqueous silver nitrate
B add aqueous sodium hydroxide, then aluminium foil; warm carefully
C add dilute acid
D acidify, then add aqueous barium nitrate
A white ppt.
B cream ppt.
C ammonia produced
D effervescence, carbon dioxide produced
A add dilute acid
B acidify with dilute nitric acid, then add aqueous silver nitrate
C add aqueous sodium hydroxide, then aluminium foil; warm carefully
D acidify, then add aqueous barium nitrate
A effervescence, carbon dioxide produced
B cream ppt.
C white ppt.
D ammonia produced
A acidify with dilute nitric acid, then add aqueous silver nitrate
B add aqueous sodium hydroxide, then aluminium foil; warm carefully
C
acidify, then add aqueous barium nitrate
D add dilute acid
A effervescence, carbon dioxide produced
B white ppt.
C cream ppt.
D ammonia produced
A add dilute acid
B acidify with dilute nitric acid, then add aqueous silver nitrate
C add aqueous sodium hydroxide, then aluminium foil; warm carefully
D acidify, then add aqueous barium nitrate
A ammonia produced
B white ppt.
C cream ppt.
D effervescence, carbon dioxide produced
A add dilute acid
B acidify with dilute nitric acid, then add aqueous silver nitrate
C add aqueous sodium hydroxide, then aluminium foil; warm carefully
D acidify, then add aqueous barium nitrate
A effervescence, carbon dioxide produced
B white ppt.
C cream ppt.
D ammonia produced
A light blue ppt., insoluble in excess
B green ppt., insoluble in excess
C red-brown ppt., insoluble in excess
D ammonia produced on warming
E white ppt., insoluble in excess
F white ppt., soluble in excess, giving colourless solution
A ight blue ppt., insoluble in excess
B green ppt., insoluble in excess
C red-brown ppt., insoluble in excess
D ammonia produced on warming
E white ppt., insoluble in excess
F white ppt., soluble in excess, giving colourless solution
A no ppt. or very slight white ppt.
B light blue ppt., soluble in excess, giving a dark blue solution
C green ppt., insoluble in excess
D red-brown ppt., insoluble in excess
E white ppt., soluble in excess, giving a colourless solution
A light blue ppt., insoluble in excess
B green ppt., insoluble in excess
C red-brown ppt., insoluble in excess
D white ppt., insoluble in excess
E ammonia produced on warming
F white ppt., soluble in excess, giving colourless solution
A no ppt. or very slight white ppt.
B green ppt., insoluble in excess
C light blue ppt., soluble in excess, giving a dark blue solution
D red-brown ppt., insoluble in excess
E white ppt., soluble in excess, giving a colourless solution
A light blue ppt., insoluble in excess
B white ppt., insoluble in excess
C ammonia produced on warming
D white ppt., soluble in excess, giving colourless solution
E green ppt., insoluble in excess
F red-brown ppt., insoluble in excess
A light blue ppt., soluble in excess, giving a dark blue solution
B no ppt. or very slight white ppt.
C red-brown ppt., insoluble in excess
D green ppt., insoluble in excess
E white ppt., soluble in excess, giving a colourless solution
A green ppt., insoluble in excess
B white ppt., soluble in excess, giving colourless solution
C light blue ppt., insoluble in excess
D white ppt., insoluble in excess
E ammonia produced on warming
F red-brown ppt., insoluble in excess
A white ppt., soluble in excess, giving a colourless solution
B light blue ppt., soluble in excess, giving a dark blue solution
C red-brown ppt., insoluble in excess
D no ppt. or very slight white ppt.
E green ppt., insoluble in excess
A ammonia produced on warming
B white ppt., insoluble in excess
C red-brown ppt., insoluble in excess
D white ppt., soluble in excess, giving colourless solution
E green ppt., insoluble in excess
F light blue ppt., insoluble in excess
A white ppt., soluble in excess, giving a colourless solution
B red-brown ppt., insoluble in excess
C light blue ppt., soluble in excess, giving a dark blue solution
D green ppt., insoluble in excess
E no ppt. or very slight white ppt.
A ‘pops’ with a lighted splint
B relights a glowing splint
C bleaches damp litmus paper
D turns limewater milky
E turns damp, red litmus paper blue
A ‘pops’ with a lighted splint
B relights a glowing splint
C bleaches damp litmus paper
D turns limewater milky
E turns damp, red litmus paper blue
A bleaches damp litmus paper
B turns damp, red litmus paper blue
C turns limewater milky
D ‘pops’ with a lighted splint
E relights a glowing splint
A turns damp, red litmus paper blue
B turns limewater milky
C ‘pops’ with a lighted splint
D relights a glowing splint
E bleaches damp litmus paper
A ‘pops’ with a lighted splint
B relights a glowing splint
C bleaches damp litmus paper
D turns limewater milky
E turns damp, red litmus paper blue
A blue-green
B yellow
C red
D lilac
A blue-green
B yellow
C red
D lilac
A blue-green
B yellow
C red
D lilac
A blue-green
B yellow
C red
D lilac
