Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. JAMB
  4. /
  5. Chemistry
  6. /
  7. 1990
  8. /
  9. Q0
Question 0

Which of the following samples will react fastest with dilute trioxonitrate (V) acid?

  • A.5 g of lumps of CacO3 at 25°C
  • B.5 g of powered CacO3 at 25°
  • C.5 g of lumps of CaCO3 at 50°C
  • D.5 g of powered CaCO3 AT 50°C
  • E.
Objective

Question details

Exam body
JAMB
Subject
Chemistry
Year
1990
Question no.
#0
Type
Objective
Previous · Q0Iron galvanized with zinc is cathodically protected from corrosion. This is… Next · Q0 In the reaction: 2Hl (g) ↔ H 2(g) + l 2(g)' ΔH = 10 kj; The concentration of…

More from this paper

  • Q0Which of the following is a physical change?
  • Q0In a reaction: SnO + 2C → Sn + 2CO, the mass of coke containing 80% carbon…
  • Q0Cr 2 O 7 + 6Fe 2+ + 14H + → 2Cr 3+ +6Fe 3+ + 7H 2 O. In the above , the…
  • Q0In the reaction 1O - 3 + 5l - + 6H + → 31 2 + 3H 2 O, the oxidizing agent is?
  • Q0Fe 2 O 3(s) + 2Al (s) → Al 2 O 3 + 2Fe (s) If the heats of formation of Al 2 O 3…
  • Q0Which of the following gases can be collected by the upward displacement of air?
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