Chemistry Past Paper Questions

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Q 281:Which organic compounds are used as drug to control bleeding?
A
Vitamins
B
Proteins
C
Glucose
D
Lipids
Rawalpindi, 2019
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Q 282:Which salt will you use to dry a gas?
A
CaCO3
B
NaCl
C
CaO
D
Na2CO3
Rawalpindi, 2019
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Q 283:______ is a fraction of residual oil:
A
Kerosene Oil
B
Asphalt
C
Petrol
D
Petroleum ether
Sahiwal, 2019
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Q 284:Chemical compound used in clark's method is:
A
Ca(OH)2
B
NaOH
C
HCl
D
CaO
Sahiwal, 2019
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Q 285:Deficiency of vitamin D causes:
A
Scurvy
B
Anemia
C
Night blindness
D
Rickets
Sahiwal, 2019
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Q 286:Dehydration of alcohol is carried out with:
A
H3PO4
B
HCl
C
HNO3
D
H2SO4
Sahiwal, 2019
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Q 287:Electronic configuration of Alkali metals is:
A
ns2
B
ns1
C
ns2np5
D
ns1np
Sahiwal, 2019
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Q 288:Example of weak electrolytes is:
A
NaCl
B
Ca(OH)2
C
H2SO4
D
NaOH
Sahiwal, 2019
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Q 289:2nd and 3rd period of the long form of Periodic Table are called:
A
Short periods
B
Normal Periods
C
long period
D
Very long periods
Sahiwal, 2019
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Q 290:A bond formed between two non-metals is expected to be:
A
Covalent
B
ionic
C
Coordinate Covalent
D
metallic
Sahiwal, 2019
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Total MCQs: 1548Page 29 of 155
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