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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 26:

Which of the following statements is correct about the periodic table?

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A Elements in the same group have the same number of electron shells
B The non-metallic properties of the elements tend to decrease across each period
C Elements in the same period have the same number of valence electrons
D The valence electrons of the elements increase progressively across the period

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Question 27:

The metal whose ore can be concentrated by passing it through a magnetic separator is

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A Zn
B Sn
C Cn
D Ca

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Question 28:

An example of an acidic oxide is

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A NO
B CO
C SO₂
D CuO

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Question 29:

What volume of 0.5M H2SO4 will exactly neutralize 20cm3 of 0.1M NaOH Solution?

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A 2.0cm ³
B 5.0cm ₃
C 6.8cm ³
D 8.3cm ³

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Question 30:

Diamond cannot be used

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A In making bicycle chains
B As abrasives
C In cutting glass and metals
D As dies for drawing wires

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