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Chemistry Past Questions

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3806

Aluminum hydroxide is used in the dyeing industry as a?

  • A. Dye
  • B. Dispersant
  • C. Salt
  • D. Mordant
View Answer & Discuss JAMB 2020
3807

The most important element on the earth's crust is?

  • A. Nitrogen
  • B. Hydrogen
  • C. Oxygen
  • D. Fluorine
View Answer & Discuss (1) JAMB 2020
3808

To obtain pure carbon(ii)oxide from its mixture with carbon(iv)oxide, the mixture should be?

  • A. Passed over heated copper(ii)oxide
  • B. Bubbled through water
  • C. Bubbled through conc H\(_2\)SO\(_4\)
  • D. Bubbled through conc NAOH
View Answer & Discuss (1) JAMB 2020
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3809

The periodic table is an arrangement of elements according to their? 

  • A. Oxidation number
  • B. Atomic number
  • C. Mass number
  • D. Nunber of neutrons
View Answer & Discuss WAEC 2019
3810

A solid with higher melting and boiling points is likely to be?

  • A. Covalent compound
  • B. A Dative compound
  • C. An Electrovalent compound
  • D. A Non-metal
View Answer & Discuss WAEC 2019
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free