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Online Tests
Chemistry 10th Class English Medium Unit 10 Online Test MCQs With Answers
Question # 1
Lewis acid-base concept have the following characteristics except:
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formation of an adduct
Formation of a co-ordinate covalent bound
Donation and acceptance of an electron pair
Donation and acceptance of a proton
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Question # 2
Mallic acid is present in
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Apple
Feats
String of bees
Urine
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Question # 3
Potassium ferrocyanide salt is.
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Normal
complex
Basic
Acidic
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Question # 4
Bases gave taste:
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Bitter
Sweetsh
Sour
Saltish
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Question # 5
Lactic acid founds in:
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Citrus fruits
Sour milk
Rancid Butter
Apple
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Question # 6
Which one is not a characteristic of an acid:
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it turns red litmus blue
it reacts with base to form salt and water
Its aqueous solution conduct electric current
it has sour taste
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Question # 7
Dilute acid react with carbonates the produce product except _________
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Salt
Water
Carbon di oxide
Hydrogen gases
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Question # 8
The bond in the product of lewis acid base reaction.
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Ionic
Covalent
Metallic
Coordinate covalent
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Question # 9
The colour of litmus paper in strong acidic solution.
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Red
Blue
Yellow
Colourless
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Question # 10
When acids react with metals which gas is evolved?
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H
2
O
2
Cl
2
N
2
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