Year :
2009
Title :
Chemistry
Exam :
NECO - BECE
Paper 1 | Objectives
31 - 40 of 47 Questions
| # | Question | Ans |
|---|---|---|
| 31. |
Two elements X and Y with electronic configurations 2,8,2 and 2,8,7 respectively, are likely to combine by _________bonding A. covalent B. dative C. electrovalent D. hydrogen E. metallic |
C |
| 32. |
The Ideal Gas Law is expressed mathematically as A. P1 /T1 = P2/T2 B. P1/V1 = P2V2 C. PV =nRT D. PV =KT E. V1/T1 = V2/T2 Detailed SolutionThe empirical relationships among the volume, the temperature, the pressure, and the amount of a gas can be combined into the ideal gas law, PV = nRT. |
|
| 33. |
Non-polar molecules are held together by A. co-ordinate bond B. covalent bond C. electromagnetic force D. hydrogen bond E. Van der Waals forces |
E |
| 34. |
Which of the following salt solutions will have a pH greater than 7? A. NaCl B. NaHSO4 C. Na2CO4 D. Na2SO4 E. MgCl2 |
C |
| 35. |
The relationship between equilibrium constant and free energy change is represented as A. δ G ° =-nFE ° B. δG °-RT ln K C. δ G °= + RT In k D. δG ° = δH – T S E. H=TδS |
B |
| 36. |
Which of the following is a solid at room temperature? A. Argon B. Bromine C. Chlorine D. Fluorine E. Iodine |
E |
| 37. |
The green house effect is a climatic condition associated with the presence of excess A. carbon (II) oxide B. carbon (IV) oxide C. hydrogen sulphide D. nitrogen (II) oxide E. oxygen |
B |
| 38. |
The following are ores of metals EXCEPT A. bauxite B. dolomite C. graphite D. haematite E. magnetite |
C |
| 39. |
Ptotal = P1 + P2 + P3 +…………. Pn, is an expression of law A. Boyle’s B. Charles’ C. Dalton’s D. Graham’s E. Gay Lussac’s |
C |
| 40. |
All the following belong to the same family EXCEPT A. glycerol B. nylon C. perspex polyethene D. polyethene E. polystyrene |
A |
| 31. |
Two elements X and Y with electronic configurations 2,8,2 and 2,8,7 respectively, are likely to combine by _________bonding A. covalent B. dative C. electrovalent D. hydrogen E. metallic |
C |
| 32. |
The Ideal Gas Law is expressed mathematically as A. P1 /T1 = P2/T2 B. P1/V1 = P2V2 C. PV =nRT D. PV =KT E. V1/T1 = V2/T2 Detailed SolutionThe empirical relationships among the volume, the temperature, the pressure, and the amount of a gas can be combined into the ideal gas law, PV = nRT. |
|
| 33. |
Non-polar molecules are held together by A. co-ordinate bond B. covalent bond C. electromagnetic force D. hydrogen bond E. Van der Waals forces |
E |
| 34. |
Which of the following salt solutions will have a pH greater than 7? A. NaCl B. NaHSO4 C. Na2CO4 D. Na2SO4 E. MgCl2 |
C |
| 35. |
The relationship between equilibrium constant and free energy change is represented as A. δ G ° =-nFE ° B. δG °-RT ln K C. δ G °= + RT In k D. δG ° = δH – T S E. H=TδS |
B |
| 36. |
Which of the following is a solid at room temperature? A. Argon B. Bromine C. Chlorine D. Fluorine E. Iodine |
E |
| 37. |
The green house effect is a climatic condition associated with the presence of excess A. carbon (II) oxide B. carbon (IV) oxide C. hydrogen sulphide D. nitrogen (II) oxide E. oxygen |
B |
| 38. |
The following are ores of metals EXCEPT A. bauxite B. dolomite C. graphite D. haematite E. magnetite |
C |
| 39. |
Ptotal = P1 + P2 + P3 +…………. Pn, is an expression of law A. Boyle’s B. Charles’ C. Dalton’s D. Graham’s E. Gay Lussac’s |
C |
| 40. |
All the following belong to the same family EXCEPT A. glycerol B. nylon C. perspex polyethene D. polyethene E. polystyrene |
A |