Chemistry Past Paper Questions

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Q 151:Dehydration of alcohols can be carried out with:
A
HCl
B
H2SO4
C
KOH
D
NaOH
Lahore, 2019
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Q 152:Formula of palmitic acid is:
A
C17H35COOH
B
C15H32COOH
C
C15H31COOH
D
C16H31COOH
Lahore, 2019
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Q 153:If the value of pH solution is less than seven it will be :
A
A base
B
An alkali
C
An acid
D
A neutral solution
Lahore, 2019
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Q 154:Lactic acid is found in:
A
Apple
B
Sour Milk
C
Urine
D
Lemon
Lahore, 2019
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Q 155:Lactic acid is present in:
A
Lemon
B
Orange
C
Apple
D
Sour Milk
Lahore, 2019
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Q 156:One atm pressure is equal to how many pascals:
A
101325
B
10325
C
10523
D
10235
Lahore, 2019
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Q 157:Oxidation number of hydrogen in metal hydrides is:
A
-1
B
+1
C
-2
D
+2
Lahore, 2019
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Q 158:Ionization energy of sodium is:
A
377 KJ/mole
B
403
C
419 KJ/mole
D
496 KJ/mole
Lahore, 2019
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Q 159:How many times liquids are denser than gases:
A
100 Times
B
1000 Times
C
10,000 Times
D
100,000 Times
Lahore, 2019
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Q 160:Depositing of one metal over the by means of electrolysis is:
A
Reduction
B
Corrosion
C
Electroplating
D
Oxidation
Lahore, 2019
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Total MCQs: 1548Page 16 of 155
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