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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 1586:
WAEC 2019
Consider the following reaction represented by the following equation: C\(_2\)H\(_2\) \(^{H\(_2\)}_{→}\) X \(^{H\(_2\)}_{→}\) Y. X and Y respectively are?
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  • A Ethane and ethene
  • B Ethene and ethane
  • C Ethyne and ethene
  • D Ethane and ethyne
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Question 1587:
WAEC 2019
Which of the following substances can be classified as heavy chemicals?
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  • A CaOCl\(_2\)
  • B H\(_2\)SO\(_4\)
  • C AgNO\(_3\)
  • D CaO
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Question 1588:
WAEC 2019
in Boyle's law?
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  • A T is constant, P varies directly with V
  • B P is constant, V varies inversely with T
  • C V is constant, P varies directly with T
  • D T is constant, V varies inversely with P
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Question 1589:
WAEC 2019
Which of the following apparatus is NOT used in volumetric analysis?
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  • A Pipette
  • B Burette
  • C Desiccator
  • D Conical flask
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Question 1590:
WAEC 2019
One of the deductions from Rutherford's alpha particle scattering experiment is that?
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  • A Electrons are negatively charged
  • B Electrons have a negligible mass
  • C Nuclei of atoms are positively charged
  • D Protons are positively charged
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