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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 46:
JAMB 2005
Metalliods are also referred to as
SchoolNGR Classroom
  • A Semi-metals
  • B Metals
  • C Colliods
  • D Non-metals
View Answer & Explanation
Question 47:
JAMB 2005
The ores that can be concentrated by flotation are
SchoolNGR Classroom
  • A Nitride ores
  • B Sulphide ores
  • C Oxide ores
  • D Non-metals
View Answer & Explanation
Question 48:
JAMB 2005
The property used in the industrial preparation of nitrogen and oxygen from air is
SchoolNGR Classroom
  • A Rate of diffusion
  • B Density
  • C Boiling point
  • D Solubility
View Answer & Explanation
Question 49:
JAMB 2005
In a flame test for calcium, the flame appears
SchoolNGR Classroom
  • A Green when viewed through a blue glass
  • B Blue when viewed through a blue glass
  • C Orange -red when viewed through a blue glass
  • D Brick-red when viewed through a blue-glass
View Answer & Explanation
Question 50:
JAMB 2005
Which of the following alloys contain iron?
SchoolNGR Classroom
  • A Duralumin and steel
  • B Brass and bronze
  • C Steel and permalloy
  • D Soft solder and duralumin
View Answer & Explanation

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