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NAT I Engineering Chemistry MCQs With Answers
Question # 1
Which has the largest radius?
Choose an answer
CO
3+
Mn
3+
Fe
3+
Cr
3+
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Question # 2
When KCIO
3
is heated it decomposes into KCI and O
2
if some MnO
2
is added the reaction goes much faster because
Choose an answer
MnO
2
decomposes to give O
2
MnO
2
provides heat by reacting
Better contact is provided by MnO
2
MnO
2
acts as a catalyst
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Question # 3
Hydrolytic conversion of sucrose into glucose and fructose is known as
Choose an answer
Induction
Inversion
Insertion
Inhibition
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Question # 4
Dilute hydrochloric acid solution cannot be concentrated by boiling beyond
Choose an answer
11%
33%
44%
22%
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Question # 5
The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends on
Choose an answer
Pressure of the gas
Temperature of the gas
Volume of the gas
Pressure temperature and volume of the gas
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Question # 6
Among alkali metal salts,the lithium salts are the poorest conductors of electricity in aqueous solution because of
Choose an answer
Easy diffusion of Li
+
ions
Lower ability of Li
+
ions to polarize water molecules
Lowest charge to radius ratio
Higher degree of hydration of Li
+
ions.
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Question # 7
A cell constant is generally found by measuring the conductivity of aqueous solution of
Choose an answer
BaCI
2
KCI
NaCI
MgCI
2
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Question # 8
Inert pair effect plays an important role in case of
Choose an answer
F
AI
Si
TI
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Question # 9
The valence orbital configuration of an element with atomic number 23 is
Choose an answer
3d
5
3d
3
,
4s
2
3d
3
,
4s
1
,
4p
1
3d
2
,
4s
2
,
4p
1
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Question # 10
If the solvent is inflammable for heating purpose we use
Choose an answer
Ice bath
Water bath
Wire gauze
Thermostat
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Question # 11
Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH
4
or LiAIH
4
?
Choose an answer
1-Propanol
2-Propanol
2-Methyl-2-propanol
Ethanol
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