Year :
1987
Title :
Chemistry
Exam :
JAMB Exam
Paper 1 | Objectives
1 - 10 of 34 Questions
| # | Question | Ans |
|---|---|---|
| 1. |
The reaction between sulphur (IV) oxide and oxygen is represented by the equilibrium reaction 2SO2(g) + O2(g) ↔ 2SO3(g), ∆H = -196 kJ. What factor would influence increased production of SO3(g)? A. Addition of a suitable catalyst B. Increase in the temperature of the reaction C. Decrease in the temperature of the reaction D. Decrease in the concentration of SO2(g) |
C |
| 2. |
Magnesium ribbon was allowed to burn inside a given gas P leaving a white solid residue Q. Addition of water to Q liberated a gas which produced dense white fumes with a drop of hydrochloric acid. The gas P was? A. nitrogen B. chlorine C. oxygen D. sulphur (IV) oxide |
A |
| 3. |
The best treatment for a student who accidentally poured concentrated tetraoxosulphate (VI) acid on his skin in the laboratory is to wash the skin with? A. cold water B. sodium hydroxide solution C. iodine solution D. sodium trioxocarbonate (IV) solution |
B |
| 4. |
In which of the following pairs of element is allotropy exhibited by each element? A. Phosphorus and hydrogen B. Oxygen and chlorine C. Sulphur and nitrogen D. Oxygen and sulphur |
D |
| 5. |
Which of the following gases can best be used for demonstrating the fountain experiment? A. ii and iii B. i and iii C. ii and iv D. ii only |
C |
| 6. |
When sodium hydroxide is heated with ammonium tetraoxosulphate (IV), the gas given off may be collected by? A. bubbling it through concentrated H2SO2 B. bubbling it through water and then passing it through calcium oxide C. passing it directly through calcium oxide D. passing it directly through calcium chloride |
C |
| 7. |
Which of the following elements will form oxide which will dissolve both in dilute HNO3 and NaOH solutions to form salts? A. Al B. Mg C. Ag D. Mn |
A |
| 8. |
Stainless steel is an alloy of? A. Iron, carbon and silver B. iron, carbon and lead C. iron, carbon and chromium D. iron and carbon only |
C |
| 9. |
Alloys are best prepared by? A. high temperature weilding of the metals B. electrolysis using the major metallic component as cathode C. reducing a mixture of the oxies of the elements D. cooling a molten mixture of the necessary elements |
D |
| 10. |
Corrosion is exhibited by? A. iron only B. electropostive metals C. metals below hydrogen inthe electrochemical series D. all metals |
D |
| 1. |
The reaction between sulphur (IV) oxide and oxygen is represented by the equilibrium reaction 2SO2(g) + O2(g) ↔ 2SO3(g), ∆H = -196 kJ. What factor would influence increased production of SO3(g)? A. Addition of a suitable catalyst B. Increase in the temperature of the reaction C. Decrease in the temperature of the reaction D. Decrease in the concentration of SO2(g) |
C |
| 2. |
Magnesium ribbon was allowed to burn inside a given gas P leaving a white solid residue Q. Addition of water to Q liberated a gas which produced dense white fumes with a drop of hydrochloric acid. The gas P was? A. nitrogen B. chlorine C. oxygen D. sulphur (IV) oxide |
A |
| 3. |
The best treatment for a student who accidentally poured concentrated tetraoxosulphate (VI) acid on his skin in the laboratory is to wash the skin with? A. cold water B. sodium hydroxide solution C. iodine solution D. sodium trioxocarbonate (IV) solution |
B |
| 4. |
In which of the following pairs of element is allotropy exhibited by each element? A. Phosphorus and hydrogen B. Oxygen and chlorine C. Sulphur and nitrogen D. Oxygen and sulphur |
D |
| 5. |
Which of the following gases can best be used for demonstrating the fountain experiment? A. ii and iii B. i and iii C. ii and iv D. ii only |
C |
| 6. |
When sodium hydroxide is heated with ammonium tetraoxosulphate (IV), the gas given off may be collected by? A. bubbling it through concentrated H2SO2 B. bubbling it through water and then passing it through calcium oxide C. passing it directly through calcium oxide D. passing it directly through calcium chloride |
C |
| 7. |
Which of the following elements will form oxide which will dissolve both in dilute HNO3 and NaOH solutions to form salts? A. Al B. Mg C. Ag D. Mn |
A |
| 8. |
Stainless steel is an alloy of? A. Iron, carbon and silver B. iron, carbon and lead C. iron, carbon and chromium D. iron and carbon only |
C |
| 9. |
Alloys are best prepared by? A. high temperature weilding of the metals B. electrolysis using the major metallic component as cathode C. reducing a mixture of the oxies of the elements D. cooling a molten mixture of the necessary elements |
D |
| 10. |
Corrosion is exhibited by? A. iron only B. electropostive metals C. metals below hydrogen inthe electrochemical series D. all metals |
D |