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Chemistry Past Questions

Study and practice Chemistry past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.

47 questions JAMB 2505 WAEC 1623 NECO 168 CUSTOM 10
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Past Questions

47 questions
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Question 1 of 7 47 total questions
Question 21
jamb 2011
The molecular lattice of iodine is held together by
Adative bond
Bmetallic bond
Chydrogen bond
Dvan der Waal's forces
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Question 22
jamb 2011
An isotope has an atomic number of 15 and a mass number of 31. The number of protons it contain is
A16
B15
C46
D31
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Question 23
jamb 2011

The relative atomic mass of a naturally occurring lithium consisting of 90% \(^7 _3\)Li and \(^6 _3\)10% Li is

A6.9
B7.1
C6.2
D6.8
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Question 24
jamb 2011
Which of the following questions is correct about the periodic table?
AThe non-metallic properties of the elements tend to decrease across each period
BThe valence electrons of the elements increase progressively across the period
CElements in the same group have the same numbeer of electron shells
DElements in the same period have the number of valence electrons
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Question 25
jamb 2011
From the diagram above, an ideal can be represented by
AM
BN
CK
DL
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Question 26
jamb 2011
Which of the following properties is NOT peculiar to matter?
Akinetic energy of particles increase from solid to gas
BRandom motion of particles increases from liquid to gas
COrderliness of particles increases from gas to liquid
DRandom motion of particles increases from gas to solid
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Question 27
jamb 2011
What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution?
[Na = 23, O = 16, H = 1]
A0.40 mol dm-3
B0.50 mol dm-3
C0.05 mol dm-3
D0.30 mol dm-3
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