Welcome to Schoolngr.com

Search SchoolNGR

Wednesday, 01 April 2026
Register . Login

Chemistry Past Questions and Answers

Chemistry Questions

Question 1126:
JAMB 2001
P(g) + Q(g) ↔ 3R(s) + S(g) ΔH is negative
Which of the following will increase the yield of R?
SchoolNGR Classroom
  • A Using a larger close vessel
  • B Increasing the temperature
  • C Removing some S
  • D Adding a positive catalyst
View Answer & Explanation
Question 1127:
JAMB 2001
A metal M displaces zinc from zinc chloride solution. This shows that
SchoolNGR Classroom
  • A M is more electronegative than zinc
  • B Zinc is above hydrogen in the series
  • C M is more electropositive than zinc
  • D Electrons flow from zinc to M
View Answer & Explanation
Question 1128:
JAMB 2001
Which of the following best explains the increase in the rate of a chemical reaction as the temperature rises?
SchoolNGR Classroom
  • A The bonds in the reacting molecules are more readily broken
  • B The molecular collisions become more violent
  • C A lower proportion of the molecules has the necessary minimum energy to react
  • D The collision frequency of the molecules increase
View Answer & Explanation
Question 1129:
JAMB 2001
What current in amperes will deposit 2.7g of aluminium in 2 hours?
[Al = 27, F = 96 500 C mol-1]
SchoolNGR Classroom
  • A 32
  • B 8
  • C 4
  • D 16
View Answer & Explanation
Question 1130:
JAMB 2001
Ethanoic acid is
SchoolNGR Classroom
  • A Tribasic
  • B Unionizeable
  • C Monobasic
  • D Dibasic
View Answer & Explanation

Stay Updated

Follow us on:


Subjects