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Chemistry 9th Class English Medium Online Test MCQs With Answers
Question # 1
Period nuebr tells abou the
Choose an answer
No. of valance electrons
No. of electronic shells
Both a and b
None of the above
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Question # 2
According to Arrhenius concept base is a substance which dissociates in aqueios solution to give
Choose an answer
Hydroxide ions
Hydrogen ions
Pair of Electrons
Proton
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Question # 3
Predict themain characteristics of the reactions of metals with acids.
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Metals are dissolved
Hydrogen gas is envolved
Metals are coverted into salts
All the above mentioned characteristics are true
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Question # 4
Aerobic respiration releases........energy than anaerobic respiration.
Choose an answer
Equal
Less
More
None of these
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Question # 5
Which of the following cannot be classified as Arrhenius acid
Choose an answer
CO2
HNO3
H2CO3
H2SO4
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Question # 6
Number of neurtons in
27
M
13
are
Choose an answer
13
14
27
15
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Question # 7
Ammonia is a base, because it
Choose an answer
Ionizes in water to give OH- Ions
Can accept proton
Contains OH group
Can accept an election pair
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Question # 8
Which acid is used in he preparation of soaf.
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Oxalic Acid
Citric Acid
Stearic Acid
Tartaric Acid
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Question # 9
The branch of chemistry that helps to treat dseases and synthesize new medicines.
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Physical Chemistry
Environmental Chemistry
Organic chemistry
Inorganic chemistry
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Question # 10
When a chemical reaction is carried out with a substancZ; a gas is produced which turns red litmus paper blue. What is the reaction?
Choose an answer
Reaction of an acid with a meal carbonate
Reactin of an alkali with ammonium salt
Reaction of an acid with ammonium salt
None of these
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Question # 11
If the Delta H value is negative then reaction witll be
Choose an answer
Endotermic
Exothermic
May or may not be exothermic or endothermic
None of these
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Question # 12
A reaction between an acid and a base produces
Choose an answer
Salt and an acid
Sald and base
Salt and water
Salt and gas
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Question # 13
Following are state of matter.
Choose an answer
Liquid
Solid
Gas
All of these
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