Year :
2004
Title :
Chemistry
Exam :
JAMB Exam
Paper 1 | Objectives
31 - 40 of 50 Questions
| # | Question | Ans |
|---|---|---|
| 31. |
Which of the following gases can be collected by the method of downward delivery? A. Chlorine B. Oxygen C. Ammonia D. Hydrogen |
A |
| 32. |
When steam is passed over red-hot carbon, the substances produced are A. Hydrogen and trioxocarbonate (IV) acid B. Hydrogen, oxygen and carbon (IV) oxide C. Hydrogen and carbon (II) oxide D. Hydrogen and carbon (IV) oxide |
C |
| 33. |
Sulphur (IV) oxide bleaches by A. Reduction B. Oxidation C. Hydration D. Adsorption |
A |
| 34. |
Carbon is tetravalent because A. The electrons in both the 2s and 2p orbitals are equivalent B. The electrons in all the orbitals of carbon are equivalent C. The 2s and 2p atomic orbitals hybridize D. All the atomic orbitals of carbon hybridize |
A |
| 35. |
Aluminium hydroxide is used in the dyeing industry as a A. Salt B. Dye C. Mordant D. Dispersant |
C |
| 36. |
Alloys are best prepared by A. Electroplating B. Arc-welding C. Reducing and mixture of their metallic oxide D. Cooling a molten mixture of the metals |
D |
| 37. |
Transition metals possess variable oxidation states because they have A. Electrons in the d orbitals B. Electron in the s orbitals C. A variable number of electrons in the p orbitals D. Partially filled p orbitals |
A |
| 38. |
Sodium metal is always kept under oil because it A. Readily reacts with water B. Is reduced by atmospheric nitrogen C. Reacts vigorously on exposure to air D. Reacts with oxygen and carbon (IV) oxide |
C |
| 39. |
Oxyacetylene flame is used for iron-welding because it A. Makes the iron metals solidify very quickly B. Combines with oxygen to give a pop sound C. Evolves a lot of heat when burnt D. Dissociates to produce carbon (IV) oxide and oxygen |
C |
| 40. |
The alkyl group can be represented by the general formula A. CnH2n+1 B. CnH2n C. CnH2n+2 D. CnH2n-2 |
A |
| 31. |
Which of the following gases can be collected by the method of downward delivery? A. Chlorine B. Oxygen C. Ammonia D. Hydrogen |
A |
| 32. |
When steam is passed over red-hot carbon, the substances produced are A. Hydrogen and trioxocarbonate (IV) acid B. Hydrogen, oxygen and carbon (IV) oxide C. Hydrogen and carbon (II) oxide D. Hydrogen and carbon (IV) oxide |
C |
| 33. |
Sulphur (IV) oxide bleaches by A. Reduction B. Oxidation C. Hydration D. Adsorption |
A |
| 34. |
Carbon is tetravalent because A. The electrons in both the 2s and 2p orbitals are equivalent B. The electrons in all the orbitals of carbon are equivalent C. The 2s and 2p atomic orbitals hybridize D. All the atomic orbitals of carbon hybridize |
A |
| 35. |
Aluminium hydroxide is used in the dyeing industry as a A. Salt B. Dye C. Mordant D. Dispersant |
C |
| 36. |
Alloys are best prepared by A. Electroplating B. Arc-welding C. Reducing and mixture of their metallic oxide D. Cooling a molten mixture of the metals |
D |
| 37. |
Transition metals possess variable oxidation states because they have A. Electrons in the d orbitals B. Electron in the s orbitals C. A variable number of electrons in the p orbitals D. Partially filled p orbitals |
A |
| 38. |
Sodium metal is always kept under oil because it A. Readily reacts with water B. Is reduced by atmospheric nitrogen C. Reacts vigorously on exposure to air D. Reacts with oxygen and carbon (IV) oxide |
C |
| 39. |
Oxyacetylene flame is used for iron-welding because it A. Makes the iron metals solidify very quickly B. Combines with oxygen to give a pop sound C. Evolves a lot of heat when burnt D. Dissociates to produce carbon (IV) oxide and oxygen |
C |
| 40. |
The alkyl group can be represented by the general formula A. CnH2n+1 B. CnH2n C. CnH2n+2 D. CnH2n-2 |
A |