Year :
1998
Title :
Chemistry
Exam :
JAMB Exam
Paper 1 | Objectives
31 - 38 of 38 Questions
| # | Question | Ans |
|---|---|---|
| 31. |
On cracking medicinal paraffin, a gas is evolved which gives a pop sound with a lighted splinter and an oily liquid which decolourizes bromine solution is also obtained. The products of the cracking are ? A. carbon (IV) oxide and alkyne B. carbon (ll) oxide and alkene C. hydrogen gas and alkene D. hydrogen gas and alkane |
C |
| 32. |
How many structural isomers can be drawn for the non-cyclic alkanol with molecular formula C 4H10O? A. 1 B. 2 C. 3 D. 4 |
D |
| 33. |
An example of aromatic compound is? A. C6H13OH B. C6H13CI C. C6H5OH D. C6H14 |
C |
| 34. |
Terylene is synthesized from ethane- 1, 2-diol and benzene - 1, 4-dicarboxylic acid by? A. addition reaction B. condensation reaction C. elimination reaction D. substitution reaction |
B |
| 35. |
Which of the following is true concerning the properties of benzene and hexane? A. Both undergo substitution reaction B. Both undergo addition reaction C. Both are solids D. Both can decolourized bromine water Detailed SolutionHexane and benzene can both partake in substitution reactions. |
|
| 36. |
 The diagram above represents an atom that can combine with chlorine to form A. a covalent bond B. an electrovalent bond C. a hydrogen bond D. a co-ordinate bond |
B |
| 37. |
 In the diagram above , the activation energy for the backward reaction is A. +5kJ B. +15KJ C. +25KJ D. +30KJ Detailed SolutionFor the backward reaction, the activation energy = 40kJ - 15kJ = +25kJ |
|
| 38. |
 In the experiment above, X could be a solution of A. sodium trioxonitrate (V) and ammonium chloride B. sodium trioxonitrate (lll) and ammonium chloride C. lead (ll) trioxonitrate (V) and copper turnings D. potassium trioxonitrate (V) and copper turnings |
B |
| 31. |
On cracking medicinal paraffin, a gas is evolved which gives a pop sound with a lighted splinter and an oily liquid which decolourizes bromine solution is also obtained. The products of the cracking are ? A. carbon (IV) oxide and alkyne B. carbon (ll) oxide and alkene C. hydrogen gas and alkene D. hydrogen gas and alkane |
C |
| 32. |
How many structural isomers can be drawn for the non-cyclic alkanol with molecular formula C 4H10O? A. 1 B. 2 C. 3 D. 4 |
D |
| 33. |
An example of aromatic compound is? A. C6H13OH B. C6H13CI C. C6H5OH D. C6H14 |
C |
| 34. |
Terylene is synthesized from ethane- 1, 2-diol and benzene - 1, 4-dicarboxylic acid by? A. addition reaction B. condensation reaction C. elimination reaction D. substitution reaction |
B |
| 35. |
Which of the following is true concerning the properties of benzene and hexane? A. Both undergo substitution reaction B. Both undergo addition reaction C. Both are solids D. Both can decolourized bromine water Detailed SolutionHexane and benzene can both partake in substitution reactions. |
|
| 36. |
The diagram above represents an atom that can combine with chlorine to form A. a covalent bond B. an electrovalent bond C. a hydrogen bond D. a co-ordinate bond |
B |
| 37. |
In the diagram above , the activation energy for the backward reaction is A. +5kJ B. +15KJ C. +25KJ D. +30KJ Detailed SolutionFor the backward reaction, the activation energy = 40kJ - 15kJ = +25kJ |
|
| 38. |
In the experiment above, X could be a solution of A. sodium trioxonitrate (V) and ammonium chloride B. sodium trioxonitrate (lll) and ammonium chloride C. lead (ll) trioxonitrate (V) and copper turnings D. potassium trioxonitrate (V) and copper turnings |
B |