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NAT II Physical Science Chemistry MCQs With Answers
Question # 1
Which of the following mineral does not contain Al?
Choose an answer
Cryolite
Mica
Feldspar
Fluorspar
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Question # 2
Al is more reactive than Fe but Al is less easily corroded than Fe because
Choose an answer
It is a noble metal
oxygen forms a protective reaction easily with water
Iron undergoes reaction easily with water
Fe form mono and divalent ions.
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Question # 3
Among the alkaline earth metals the element forming predominantly covalent compounds is
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Be
Mg
Sr
Calcium
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Question # 4
Enzymes are
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Proteins
Minerals
Oils
Fatty acids
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Question # 5
Detergents are
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Synthetic products
Natural products
Both A and B
None of the above
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Question # 6
Which has largest radius?
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CO
3+
Mn
3+
Fe
3+
Cr
3+
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Question # 7
Octane number can be changed by
Choose an answer
Isomerisation
alkylation
Cyclisation
All of these
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Question # 8
Potassium is kept in
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Water
Ammonia
Alcohol
Kerosene.
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Question # 9
Covalent compounds are soluble in
Choose an answer
Polar solvents
Non-polar solvents
Concentrated acids
All solvents
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Question # 10
The last orbit of argon would have electrons
Choose an answer
8
18
2
6
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Question # 11
SO
2
and NO
2
produce pollution by increasing
Choose an answer
Alkalinity
Acidity
Neutrality
Buffer action
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Question # 12
Red lead is
Choose an answer
PbO
Pb
3
O
4
PbO
2
Pb
4
O
3
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Question # 13
Which of the following with aqueous KOH will give acetaldehyde?
Choose an answer
1, 2-Dichloroethane
1, 1-Dichloroethane
Chloroacetic acid
Ethyl chloride
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Question # 14
Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
Choose an answer
Mercury
Lead
Nitrogen oxide
Sulphur oxide
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Question # 15
Which one of the following compounds does not exist?
Choose an answer
NCl
5
AsF
5
SbCl
5
PF
5
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Question # 16
Which of the following statement regarding catalyst is not true?
Choose an answer
A catalyst remains unchanged in composition and quantity at the end of the reaction
A catalyst can initiate a reaction
A catalyst dose not alter the equilibrium in a reversible reaction
Catalysts are sometimes very specific in respect of reaction.
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