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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.

45 questions JAMB 2505 WAEC 1623 NECO 168 CUSTOM 10

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Past Questions

45 questions

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Question 21

waec 2014

Which of the following arrangements is in decreasing order of atomic radius?

ALi>Be>C>

BLi>B>Be>C

CLi>Be>B>C

DC>B>Be>Li

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Question 22

waec 2014

The two elements ₁₁X and ₁₉Y are in the same group because they have the same

Avalence electrons

Bionization energy

Cnumber of shell

Datomic size

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Question 23

waec 2014

Hydrogen bonds are formed between molecules containing a hydrogen atom bonded to a

Astrongly electronegative atom

Bnon-polar species

Cdiatomic element

Dcomplex ion

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Question 24

waec 2014

The crystal layers in graphite are held together by

Acovalent bond

Belectrostatic forces

Cionic bond

Dvan der Waal's forces

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Question 25

waec 2014

The shape of CH₄ is

Alinear

Bplanar

Cpyramidal

Dtetrahedral

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