Year :
2003
Title :
Chemistry
Exam :
JAMB Exam
Paper 1 | Objectives
31 - 40 of 48 Questions
| # | Question | Ans |
|---|---|---|
| 31. |
Metals of the first transition series have special properties which are different from those of groups I and II elements because they have partially filled A. s orbitals B. p orbitals C. d orbitals D. f orbitals |
C |
| 32. |
Hydrogen can be displaced from a hot alkaline solution by A. Fe B. Cu C. Ca D. Sn |
A |
| 33. |
Which of the following statements is true of sulphur (IV) oxide? A. It forms tetraoxosulphate (VI) acid with water B. It is an odourless gas C. It is an acid hybride D. It forms white precipitate with acidified barium chloride |
C |
| 34. |
The salt that will form a precipitate soluble in excess ammonia solution is A. Ca(NO3)2 B. Al(NO3)3 C. Al(NO3)3 D. Al(NO3)3 |
B |
| 35. |
The metal that liberates hydrogen from cold water in bubbles only is? A. Na B. K C. Ca D. Al Detailed SolutionAfter a second or so, the calcium metal begins to bubble vigorously as it reacts with the water, producing hydrogen gas, and a cloudy white precipitate of calcium hydroxide. |
|
| 36. |
Chlorine gas turns a damp starch-iodide paper A. pink B. colourless C. red D. dark blue |
D |
| 37. |
The modern process of manufacturing steel for iron is by A. treatment with acids B. oxidation C. blast reduction D. treatment with alkanal |
C |
| 38. |
Ethene reacts with hydrogen bromide to give A. CH2Br2 B. CH3CH2Br C. C2H2Br2 D. CHBr2 |
B |
| 39. |
How many isomers does pentane have? A. 6 B. 5 C. 4 D. 3 |
D |
| 40. |
The leachate of a certain plant ash is used in local soap making because it contains A. sodium chloride and potassium hydroxide B. sodium hydroxide C. potassium hydroxide D. soluble carbonates and hydrogen carbonates Detailed SolutionLye is the most commonly used alkali for soap-making. The chemical name for lye is sodium hydroxide. (A lye is a metal hydroxide traditionally obtained by leaching ashes (containing largely potassium carbonate or "potash"), or a strong alkali which is highly soluble in water producing caustic basic solutions.) |
| 31. |
Metals of the first transition series have special properties which are different from those of groups I and II elements because they have partially filled A. s orbitals B. p orbitals C. d orbitals D. f orbitals |
C |
| 32. |
Hydrogen can be displaced from a hot alkaline solution by A. Fe B. Cu C. Ca D. Sn |
A |
| 33. |
Which of the following statements is true of sulphur (IV) oxide? A. It forms tetraoxosulphate (VI) acid with water B. It is an odourless gas C. It is an acid hybride D. It forms white precipitate with acidified barium chloride |
C |
| 34. |
The salt that will form a precipitate soluble in excess ammonia solution is A. Ca(NO3)2 B. Al(NO3)3 C. Al(NO3)3 D. Al(NO3)3 |
B |
| 35. |
The metal that liberates hydrogen from cold water in bubbles only is? A. Na B. K C. Ca D. Al Detailed SolutionAfter a second or so, the calcium metal begins to bubble vigorously as it reacts with the water, producing hydrogen gas, and a cloudy white precipitate of calcium hydroxide. |
| 36. |
Chlorine gas turns a damp starch-iodide paper A. pink B. colourless C. red D. dark blue |
D |
| 37. |
The modern process of manufacturing steel for iron is by A. treatment with acids B. oxidation C. blast reduction D. treatment with alkanal |
C |
| 38. |
Ethene reacts with hydrogen bromide to give A. CH2Br2 B. CH3CH2Br C. C2H2Br2 D. CHBr2 |
B |
| 39. |
How many isomers does pentane have? A. 6 B. 5 C. 4 D. 3 |
D |
| 40. |
The leachate of a certain plant ash is used in local soap making because it contains A. sodium chloride and potassium hydroxide B. sodium hydroxide C. potassium hydroxide D. soluble carbonates and hydrogen carbonates Detailed SolutionLye is the most commonly used alkali for soap-making. The chemical name for lye is sodium hydroxide. (A lye is a metal hydroxide traditionally obtained by leaching ashes (containing largely potassium carbonate or "potash"), or a strong alkali which is highly soluble in water producing caustic basic solutions.) |