Year :
2008
Title :
Chemistry
Exam :
NECO - BECE
Paper 1 | Objectives
11 - 20 of 42 Questions
| # | Question | Ans |
|---|---|---|
| 11. |
The rate of a chemical reaction is NOT affected by one of these factors A. colour B. concentration C. presence of light D. surface area E. temperature |
A |
| 12. |
Pipe-borne water is usually chlorinated in order to A. coagulate sediments in the water B. improve taste of the water C. kill harmful bacteria in the water D. make it pure E. remove the hardness in the water |
C |
| 13. |
The planet with the highest number of moon is A. Earth B. Jupiter C. Uranus D. Pluto E. Venus. Detailed SolutionThe planet with the most moons in the Solar System is Jupiter, with a total of 63 confirmed moons (as of 2009). |
|
| 14. |
If two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged is that with the A. greater stability in solution B. lower electrical charge C. smaller mass D. stronger tendency to accept electrons E. stronger tendency to lose electrons. |
D |
| 15. |
A device used in the laboratory for intermittent production of gases without heating is A. aspirator B. delivery tube C. fume cupboard D. kipp’s apparatus E. muller counter |
D |
| 16. |
What type of bond holds hydrogen fluoride molecules together when forming larger aggregate? A. Covalent B. Dative C. Hydrogen D. Ionic E. Metallic |
C |
| 17. |
The high boiling point of hydrogen fluoride can be explained in terms of A. covalent bonds. B. dative bonds. C. dipole-dipole bonds D. electrovalent (ionic) bonds. E. hydrogen bonds. |
E |
| 18. |
The action of zinc on an acid produces A. chlorine B. hydrogen C. nitrogen D. sulphur E. water vapour. |
B |
| 19. |
A solution is prepared by dissolving I .96g of H2SO4 in 250 cm3 of its solution. What is the concentration in moles per dm3? A. 0.008 B. 0.08 C. 0.1 D. 0.8 E. 8.02 |
B |
| 20. |
Which of the following compounds is unsaturated? A. Cyclohexane B. Methoxyethane C. 1 ,2-dibromoethane D. 2,2,3-trimethylpentane E. 3-methylbut-l-ene |
E |
| 11. |
The rate of a chemical reaction is NOT affected by one of these factors A. colour B. concentration C. presence of light D. surface area E. temperature |
A |
| 12. |
Pipe-borne water is usually chlorinated in order to A. coagulate sediments in the water B. improve taste of the water C. kill harmful bacteria in the water D. make it pure E. remove the hardness in the water |
C |
| 13. |
The planet with the highest number of moon is A. Earth B. Jupiter C. Uranus D. Pluto E. Venus. Detailed SolutionThe planet with the most moons in the Solar System is Jupiter, with a total of 63 confirmed moons (as of 2009). |
|
| 14. |
If two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged is that with the A. greater stability in solution B. lower electrical charge C. smaller mass D. stronger tendency to accept electrons E. stronger tendency to lose electrons. |
D |
| 15. |
A device used in the laboratory for intermittent production of gases without heating is A. aspirator B. delivery tube C. fume cupboard D. kipp’s apparatus E. muller counter |
D |
| 16. |
What type of bond holds hydrogen fluoride molecules together when forming larger aggregate? A. Covalent B. Dative C. Hydrogen D. Ionic E. Metallic |
C |
| 17. |
The high boiling point of hydrogen fluoride can be explained in terms of A. covalent bonds. B. dative bonds. C. dipole-dipole bonds D. electrovalent (ionic) bonds. E. hydrogen bonds. |
E |
| 18. |
The action of zinc on an acid produces A. chlorine B. hydrogen C. nitrogen D. sulphur E. water vapour. |
B |
| 19. |
A solution is prepared by dissolving I .96g of H2SO4 in 250 cm3 of its solution. What is the concentration in moles per dm3? A. 0.008 B. 0.08 C. 0.1 D. 0.8 E. 8.02 |
B |
| 20. |
Which of the following compounds is unsaturated? A. Cyclohexane B. Methoxyethane C. 1 ,2-dibromoethane D. 2,2,3-trimethylpentane E. 3-methylbut-l-ene |
E |