Chemistry Past Paper Questions

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Q 291:Lactic acid is found in:
A
Lemon
B
Orange
C
Apple
D
Sour Milk
Sahiwal, 2019
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Q 292:Main component of natural gas is:
A
Methane
B
Propane
C
Butane
D
Pentane
Sahiwal, 2019
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Q 293:Malic acid is found in:
A
Lemon
B
Sour Milk
C
Orange
D
Apple
Sahiwal, 2019
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Q 294:Maximum density of water at 4℃ is:
A
0.5 g cm-3
B
1.0 g cm-3
C
1.5 g cm-3
D
2.0g cm-3
Sahiwal, 2019
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Q 295:Fatty acid are the building blocks of:
A
Lipids
B
Proteins
C
Glucose
D
Vitamin
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Q 296:Formula of Palmitic acid is:
A
C17H37COOH
B
C17H35COOH
C
C17H33COOH
D
C15H31COOH
Sahiwal, 2019
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Q 297:Formula of stearic acid is:
A
C15H31COOH
B
C17H33COOH
C
C17H35COOH
D
C17H37COOH
Sahiwal, 2019
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Q 298:Guldberg and Waage put forward Law of Mass Action in:
A
1859 AD
B
1869 AD
C
1879 AD
D
1889 AD
Sahiwal, 2019
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Q 299:How many electrons are involved in triple covalent bond?
A
8
B
6
C
4
D
3
Sahiwal, 2019
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Q 300:Identify the compound which is not soluble in water?
A
NaCl
B
C6H6
C
MgCl2
D
KBr
Sahiwal, 2019
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Total MCQs: 1548Page 30 of 155
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