Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. UNIPORT
  4. /
  5. Chemistry
  6. /
  7. 2011/2012
  8. /
  9. Q20
Question 20

What is the percentage by mass of oxygen in Al2(SO4)43.2H2O?

  • A.14.29%
  • B.25.39%
  • C.50.79%
  • D.59.25%
Objective

Question details

Exam body
UNIPORT
Subject
Chemistry
Year
2011/2012
Question no.
#20
Type
Objective
Previous · Q19Under normal condition of ionic addition, what will be the major product of the… Next · Q22 What volume of gas is evolved at s.t.p if 2g of calcium trioxocarbonate(IV) is…

More from this paper

  • Q15The oxidation state of oxygen in tetraoxosulphate(vi) acid is
  • Q16The reaction that takes place in Daniel cell is
  • Q17The salt formed from a strong acid and strong base is
  • Q18The type of reaction that is peculiar to benzene is
  • Q23Which experiment led to the measurement of the charge on an electron?
  • Q24Which of the following acts as both a reducing and an oxidizing agent
See all Chemistry 2011/2012 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