Claim your £9,000 voucher to study for a UK master's degree

Chemistry Past Questions

Change Subject Ask Question Check Syllabus Download App My Bookmarks

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 (24) JAMB 1978
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 (28) JAMB 1978
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 (7) JAMB 1978
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 (70) JAMB 1978
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 (34) JAMB 1978