90% of Post UTME Exam Questions come from Past Ones
Failed JAMB? Don't Worry, you can gain admission into 200L in any University of your Choice, even with low JAMB Score

Chemistry Past Questions

Change Subject Ask Question Check Syllabus Download App

21
Brass and bronze are both metallic alloys. Which of the following constituents is common to both alloys?
  • A. Tin
  • B. Zinc
  • C. Copper
  • D. Lead
  • E. Aluminium
View Answer & Discuss (16)
22
Which of the following gases may not be dried with concentrated sulphuric acid?
  • A. HCl
  • B. N2
  • C. Cl2
  • D. SO2
  • E. NH3
View Answer & Discuss (19)
23
Which of the following reactions does not take place in the smelting of iron in a blast furnace?
  • A. CaCO3(s) CaO(s) + CO2(g)
  • B. C(s) + O2(g) CO2(g)
  • C. 3FeCO(s) + 2OCO2(g) FeO4(s)
  • D. SiO2(s) + CaO(s) CaCO3(s)
  • E. CO2(g) + C(s) 2CO(g)
View Answer & Discuss (5)
24
Which of the following is not a member of the homologous series of the paraffins (alkanes)?
  • A. C3H8
  • B. C5H12
  • C. C7H16
  • D. C15H32
  • E. C24H48
View Answer & Discuss (51)
25
When ammonia and hydrogen ion bond together to form ammonium ion, the bond formed is called
  • A. ionic bond
  • B. electrovalent bond
  • C. covalent bond
  • D. co-ordinate bond
  • E. hydrogen bond
View Answer & Discuss (29)