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Online Tests
Chemistry 10th Class English Medium Unit 10 Online Test MCQs With Answers
Question # 1
Acid means
Choose an answer
Sour
Bitter
Sweet
Salty
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Question # 2
Acetic acid is a weak acid because it.
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Is used in cooking and flavouring food.
Has very low pH
Is not fully ionized
Does not contain any hydrogen ions.
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Question # 3
Which acid is used for food preservation?
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Hydrochloric acid
Benzoic acid
Sulphuric acid
Nitric acid.
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Question # 4
Which of one the following is Lewis base?
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BF3
H+
NH3
Ag+
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Question # 5
Who proved that the presence of hydrogen as the main constituent of all acids.
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Lavoisier
Humphrey Davy
Dalton
Arrhenius
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Question # 6
All acids turn blue litmus.
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Red
Blue
Pinck
White
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Question # 7
Alkalis react with ammonium salt to liberate.
Choose an answer
SO
2
CO
2
NH
3
H
2
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Question # 8
All water soluble metallic oxides have characteristic of:
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acidic
basic
neutral
amphoteric
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Question # 9
According to Arrhenius concept acid is a substance which dissociates in aqueous solution to give.
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Hydrogen ions
Hydroxide ions
Both a and b
None of these
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Question # 10
The base which is used in alkaline batteries is.
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NaOH
Al(OH)
2
KOH
Mg(OH)
2
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Question # 11
|Which one is not an Arrhenius acid?
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HCl
H2SO
4
CO
2
HNO
3
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Question # 12
Acetic acid is used for:
Choose an answer
Elching designs
Clearing metals
Flavouring food
Making explosives
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Question # 13
Potassium ferrocyanide salt is.
Choose an answer
Normal
complex
Basic
Acidic
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