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3856

Which of the following methods is NOT used  for the separation of mixtures?

  • A. Chromatography
  • B. Crystallization
  • C. Distillation
  • D. Electrolysis
View Answer & Discuss WAEC 2019
3857

The group to which elements belong in the periodic table is determined by the number?

  • A. electrons
  • B. core electrons
  • C. valence shells
  • D. valence electrons
View Answer & Discuss (1) WAEC 2019
3858

Kipps  apparatus can be used to prepare?

  • A. H\(_2\)
  • B. NH\(_3\)
  • C. O\(_2\)
  • D. H\(_2\)S
View Answer & Discuss (1) WAEC 2019
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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3859

Which of the following substances is an example of a fine chemical?

  • A. Sodium hydroxide
  • B. Hydrochloric acid
  • C. Ethylene
  • D. Ammonia
View Answer & Discuss (4) WAEC 2020
3860

 

The IUPAC name of the compound represented by the structure below is ?








 

  • A. 2- chloro but-I ,3-diene.
  • B. But-1,3-chlorodiene.
  • C. 2-chloro but-diene.
  • D. 3 -chloro but -1.3-diene.
View Answer & Discuss (1) WAEC 2020
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WAEC offline past questions - with all answers and explanations in one app - Download for free
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