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Online Tests
Chemistry 10th Class English Medium Unit 10 Online Test MCQs With Answers
Question # 1
Which of one the following is Lewis base?
Choose an answer
BF3
H+
NH3
Ag+
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Question # 2
Which acid is used for etching designs on copper plates?
Choose an answer
H
2
SO
4
HNO
3
HCl
CH
3
COOH
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Question # 3
The reaction between an acid and a base produces.
Choose an answer
Salts and water
Salt and gas
Salt and an acid
Salt and an base
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Question # 4
If a liquid has a pH of 7 then it must.
Choose an answer
Be a colourless and odourless liquid
Freeze at 0
o
C and boil at 100
o
C
Be natural
Be a solution containing water
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Question # 5
Acids turn
Choose an answer
Blue litmus red
Red litmus blue
Blue litmus green
Blue litmus blue
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Question # 6
The value of constant of ionic product of water Kw at 25 C.
Choose an answer
1.0 x 10
-4
1.0 x 10
14
1.0 x 10
-4
1.0 x 10
4
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Question # 7
Basic solution have pH value.
Choose an answer
Less than 7
Greater than 7
equal to 7
None of these
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Question # 8
A product of any Lewis acid base reaction is a single specie called.
Choose an answer
Salt
Water
Adduct
None of these
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Question # 9
Lavoisier named binary compounds of oxygen acids in .
Choose an answer
1787
1790
1815
1828
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Question # 10
Dilute acids react with carbonates to produce the given products except.
Choose an answer
Salt
Water
Hydrogen
Carbon dioxide
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Question # 11
Jabir Bin Haiyan prepared.
Choose an answer
Nitric Acid
Hydrochloric acid
Sulphueric Acid
All of these
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Question # 12
Potassium ferrocyanide salt is.
Choose an answer
Normal
complex
Basic
Acidic
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Question # 13
Acids have taste
Choose an answer
Bitter
Seetish
Sour
Saltish
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