Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. IMSU
  4. /
  5. Chemistry
  6. /
  7. 2012/2013
  8. /
  9. Q10
Question 10

What is the percentage by mass of copper in copper (I) oxide? Given that O=16, Copper (I) Oxide = Cu2O

  • A.88.9%
  • B.80.0%
  • C.66.7%
  • D.20.0%
Objective

Question details

Exam body
IMSU
Subject
Chemistry
Year
2012/2013
Question no.
#10
Type
Objective
Previous · Q9Calculate the molar mass of CuSO 4 .5H 2 O Next · Q11 A solution of pH 7 is

More from this paper

  • Q5The best description for water molecule
  • Q6A compound which can react both as an acid and a base is said to be
  • Q7One of these compound reacts both as an acid and a base
  • Q8Can be used to manufacture fertilizer
  • Q12The existence of two or more forms of the same clement in the same physical…
  • Q13Which of the following exhibits resonance?
See all Chemistry 2012/2013 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy