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Chemistry 1990 JAMB Past Questions

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36
Smoke consist of?
  • A. solid particles dispersed in liquid
  • B. solid or liquid particles dispersed in gas
  • C. gas or liquid particles dispersed inliquid
  • D. liquid particles dispersed inliquid
View Answer & Discuss (5) JAMB 1990
37
Na2C2O4 + CaCl2 → CaC2O4 + 2NaCl. Given a solution of 1.9g of sodium oxalate in 50g of water at room temperature, calculate the minimum volume of 0.1 M calcium oxalate using the above equation?
  • A. 1.40 χ 102 dm3
  • B. 14.0 χ 102 cm3
  • C. 1.40 χ 10-2 dm-2
  • D. 14.0 χ 10-2 cm3
View Answer & Discuss (9) JAMB 1990
38
2.0g of a monobasic acid was made up to 250 cm3 with distilled water. 25.00 cm3 of this solution required 20.00cm3 of 0.1 M NaOH solution for complete neutralization. The molar mass of the acid is?
  • A. 200 g
  • B. 160 g
  • C. 100 g
  • D. 50 g
View Answer & Discuss (10) JAMB 1990
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
39
What is the concentration of H+ ions in moles per dm3 of a sodium of pH 4.398?
  • A. 4.0 χ 10-5
  • B. 0.4 χ 10-5
  • C. 4.0 χ 10-3
  • D. 0.4 χ 10-3
View Answer & Discuss (23) JAMB 1990
40

What volume of 11.0 M hydrochloric acid must be dilute to obtain 1 dm3 of 0.05 M acid?

  • A. 0.05 dm3
  • B. 0.10 dm3
  • C. 0.55 dm3
  • D. 11.0 dm3
View Answer & Discuss (16) JAMB 1990
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