Welcome to Schoolngr.com

Search SchoolNGR

Thursday, 11 June 2026
Register . Login

Chemistry Past Questions and Answers

Chemistry Questions

Question 86:
JAMB 1978
When ammonia and hydrogen ion bond together to form ammonium ion, the bond formed is called
SchoolNGR Classroom
  • A Ionic bond
  • B Electrovalent bond
  • C Covalent bond
  • D Co-ordinate bond
  • E Hydrogen bond
View Answer & Explanation
Question 87:
JAMB 1978
An example of an alcohol is
SchoolNGR Classroom
  • A CCl<sub style='font-size: smaller;'>4</sub>
  • B CH<sub style='font-size: smaller;'>3</sub>COOH
  • C CHCl<sub style='font-size: smaller;'>3</sub>
  • D C<sub style='font-size: smaller;'>2</sub>H<sub style='font-size: smaller;'>6</sub>
  • E CH<sub style='font-size: smaller;'>3</sub>OH
View Answer & Explanation
Question 88:
JAMB 1978
The nucleus of an atom contains
SchoolNGR Classroom
  • A Protons only
  • B Neurons only
  • C Protons and electrons
  • D Neutrons and electrons
  • E Protons and neutrons
View Answer & Explanation
Question 89:
JAMB 1978
Hypochlorous acid is used as a bleach because
SchoolNGR Classroom
  • A It is a strong acid
  • B It yields chlorine readily in pure water
  • C It is an oxidising agent
  • D It is a weak acid
  • E It is a reducing agent
View Answer & Explanation
Question 90:
JAMB 1978
The normal boiling point of a liquid is defined as
SchoolNGR Classroom
  • A The temperature at which its vapour pressure equals the atmospheric pressure
  • B The temperature at which bubbles begin to form
  • C The temperature at which the vapour pressure equals 1 temperature
  • D The temperature at which the rate of condensation of vapour equals the rate of vaporisation of the liquid
  • E The temperature at which the space above the liquid is saturated
View Answer & Explanation

Stay Updated

Follow us on:


Subjects