Chemistry Past Paper Questions

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Q 561:A reaction between an acid and a base produces:
A
Salt and water
B
Salt and gas
C
Salt and acid
D
Salt and base
Lahore, 2018
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Q 562:About 99 % of atmospheric mass lies is:
A
16km
B
17km
C
30km
D
35km
Lahore, 2018
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Q 563:Dehydration of alcohols can be carried out with:
A
H2SO4
B
HCl
C
KOH
D
NaOH
Lahore, 2018
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Q 564:Depending upon temperature variation, atmosphere is divided into how many regions:
A
One
B
Two
C
Three
D
Four
Lahore, 2018
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Q 565:General formula of carbohydrates is:
A
Cn(H2O)n
B
Cn(H2O2)n
C
Cn(H3O)n
D
Cn(H2O3)n
Lahore, 2018
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Q 566:In laboratory, urea was prepared by:
A
Berzelius
B
Dalton
C
Rutherford
D
Wohler
Lahore, 2018
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Q 567:If Qc < Kc, reaction proceeds:
A
Forward
B
Reverse
C
Equilibrium
D
Both side
Lahore, 2018
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Q 568:In halogens, which is high electronegativity element:
A
Iodine
B
bromine
C
Chlorine
D
Fluorine
Lahore, 2018
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Q 569:Ice floats on water because:
A
Ice is amorphous in nature
B
Ice is denser than wter
C
Water molecules move more randomly
D
Water is denser than ice
Lahore, 2018
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Q 570:Formula of rust is:
A
FeO3
B
Fe(OH)3.nH2O
C
Fe(OH)3
D
Fe2O3, nH2O
Lahore, 2018
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Total MCQs: 1548Page 57 of 155
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