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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.

46 questions JAMB 2505 WAEC 1623 NECO 168 CUSTOM 10

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Past Questions

46 questions

Question 1 of 6 46 total questions

Question 21

jamb 2022

Isotopes of an element have the same

Aatomic mass

Bnumber of neutrons

Cmass number

Datomic number

Question 22

jamb 2022

Which of these is an element?

Awater

Bsalt

Coxygen

Dair

Question 23

jamb 2022

The molar mass of H¸?O (H=1, O=16) is

A2 g

B36 g

C18 g

D16 g

Question 24

jamb 2022

Which process separates a solid from a liquid using a filter paper?

Asublimation

Bcrystallisation

Cdistillation

Dfiltration

Question 25

jamb 2022

The formula of sulphuric acid is

ASO???

BH???SO???

CH???SO???

DH???S

Question 26

jamb 2022

The atomic number of an element is the number of

Aprotons

Bnucleons

Celectrons + neutrons

Dneutrons

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