Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. UI
  4. /
  5. Chemistry
  6. /
  7. 2020/2021
  8. /
  9. Q12
Question 12

The ion that may be assumed to have neglible concentration in a sample of water that lathers readily with soap is_____

  • A.Mg2+
  • B.K+
  • C.CO32+
  • D.HCO3
Objective

Question details

Exam body
UI
Subject
Chemistry
Year
2020/2021
Question no.
#12
Type
Objective
Previous · Q111.34 of hydrated sodium tetraoxosulphate (VI) was heated to give an anhydrous… Next · Q13 In which of the following are radioactive isotopes used?

More from this paper

  • Q8The component of air that is removed when air is bubbled into alkaline…
  • Q9Which of the following substances is a peroxide?
  • Q10An eruption polluted an environment with a gas suspected to he H 2 , a poisonous…
  • Q14Brass is an alloy containing copper and
  • Q15The oxidation state of oxygen in tetraoxosuphate (iv)acid is
  • Q16Rhombic sulphur, monoclinic sulphur and amorphous sulphur are:
See all Chemistry 2020/2021 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