Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. WAEC
  4. /
  5. Chemistry
  6. /
  7. 2011
  8. /
  9. Q33
Question 33

What is the value of n in the following equation? Cr2O72- + 14H+ + ne- → 2Cr 3+ + 7H2O

  • A.2
  • B.3
  • C.6
  • D.7
Objective

Question details

Exam body
WAEC
Subject
Chemistry
Year
2011
Question no.
#33
Type
Objective
Previous · Q32Consider the following reaction equation: X (g) + Y (g) ⇌ XY (g) ; ∆H = + 220KJ… Next · Q34 What mass of copper would be formed when a current of 10.0 A is passed through a…

More from this paper

  • Q29When NH 4 CI was dissolved in water, the container was cold to touch. This…
  • Q30Which of the following metallic oxides is amphoteric?
  • Q31On evaporation to dryness, 250 cm 3 of saturated solution of salt X with…
  • Q35Which of the following metals could be used as sacrifical anode for preventing…
  • Q36Consider the following electrochemical cell notation: M (s) / M 2+ (aq) // H +…
  • Q37Which of the following compounds determines the octane rating of petrol?
See all Chemistry 2011 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