Chemistry Past Paper Questions

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Q 221:The formula of palmitic Acid is:
A
C17H35COOH
B
C17H33COOH
C
C17H37COOH
D
C15H31COOH
Multan, 2019
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Q 222:The value of Kc depends upon:
A
Temperature
B
Pressure
C
Volume
D
Density
Multan, 2019
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Q 223:What is the oxidation number of Chromium in K2Cr2O7 ?
A
+2
B
+6
C
+14
D
+7
Multan, 2019
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Q 224:Which of the following non-metal is lustrous?
A
Carbon
B
Sulphur
C
Phosphorous
D
Iodine
Multan, 2019
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Q 225:Which of the following scientists discovered Proton?
A
Rutherford
B
Bohr
C
Goldstein
D
Thomson
Multan, 2019
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Q 226:Which one is the good example of Triple Covalent Bond?
A
N2
B
O2
C
H2
D
Cl2
Multan, 2019
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Q 227:Which one of the following elements is found in most abundance in earth's crust?
A
Oxygen
B
Aluminium
C
Silicon
D
Argon
Multan, 2019
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Q 228:Which one of the following gases diffuses the fastest?
A
Hydrogen
B
Helium
C
Chlorine
D
Fluorine
Multan, 2019
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Q 229:The formula of rust is :
A
Fe2O3.nH2O
B
Fe2O3
C
Fe(OH)3
D
Fe(OH)3.nH2O
Multan, 2019
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Q 230:The solution of which of the following salt is called brine?
A
NaCl
B
KCl
C
KNO3
D
KBr
Multan, 2019
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Total MCQs: 1548Page 23 of 155
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