Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. WAEC
  4. /
  5. Chemistry
  6. /
  7. 1990
  8. /
  9. Q27
Question 27

Which of the following is normally used for drying ammonia gas?

  • A.Concentrated tetraoxonitrate (Vl) acid
  • B.Calcium oxide
  • C.anhydrous calcium chloride
  • D.phosphorus (V) oxide
  • E.anhydrous copper (ll) tetraoxosulphate (VI)
Objective

Question details

Exam body
WAEC
Subject
Chemistry
Year
1990
Question no.
#27
Type
Objective
Previous · Q26Which of the following explains why trioxonitrate (V) acid is not used for… Next · Q28 Nuclear reactions can be used in the following except

More from this paper

  • Q23Which of the following statements explains why tetraoxosulphate (IV) acid is…
  • Q24Which of the following is not correct of glucose and fructose?They
  • Q25To what temperature must a gas be raised from 273K in order to double both its…
  • Q29The decomposition of hydrogen peroxide is represented by the equation: 2H 2 O…
  • Q30Which of the following compounds crystallizes without water of crystallization?
  • Q31The following metals are extracted by the electrolytic method except
See all Chemistry 1990 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