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NAT I Engineering Chemistry MCQs With Answers
Question # 1
For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to
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Hydrolysis
Oxidation
Hydrogenation
Electrolysus
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Question # 2
The relative rates of diffusion of a gas (Mol, wt. - 98) as compared to hydrogen will be
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1/7
1/5
1/4
1
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Question # 3
The order of reactivity of halogens in aliphatic substitution reactions is
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Br2 > CI2 > F2
CI2 > Br2 > F2
CI2 CI2 > Br2
F2 > Br2 > CI2
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Question # 4
The rotation of two carbon atoms joined by double bond would happened only if
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Pi bond is broken
Sigma bond is broken
Both bonds are broken
None of above
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Question # 5
In N.W.F.P the phosphate fertilizer are produced at
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D.I.Khan
Haripur
Nowshera
Dargai
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Question # 6
Bell metal is an alloy of
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Cu,Zn,and Sn
Cu,Zn and Ni
Cu and Zn
Cu and Sn
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Question # 7
The movement of solvent molecules through a semipermeable membrane is called
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Electrolysis
Electrophoresis
Osmosis
Cataphoresis
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Question # 8
The number of atoms in 0.0004 g of magnesium is close to
Choose an answer
24
2 x 10
20
10
20
6.02 x 10
23
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Question # 9
During the folding of filter paper the apex form angle of about
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80
o
60
o
180
o
90
o
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Question # 10
Salol is prepared from
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Salicylic acid and phenol
Salicylic acid and methyl alcohol
Both
None
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Question # 11
The pore size of the filter paper depends upon
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Nature of the medium
Temperature of the medium
Size of the particles
Mass of the particles
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