Year :
2011
Title :
Chemistry
Exam :
JAMB Exam
Paper 1 | Objectives
11 - 20 of 47 Questions
| # | Question | Ans |
|---|---|---|
| 11. |
What type of bond exits between an element X with atomic number 12 and Y with atomic number 17? A. Electrovalent B. Metallic C. Covalent D. Dative |
|
| 12. |
Hardness of water is mainly due to the presence of A. calcium hydroxide or magnesium hydroxide B. calcium trioxocarbonate (IV) or calcium tetraoxosulphate (VI) C. sodium hydroxide or magnesium hydroxide D. calcium chloride or sodium chloride salts Detailed SolutionSalts of Calcium and Magnesium are responsible for hardness of water. Bicarbonates, Carbonates, Chlorides and Sulfates of Calcium and Magnesium causes temporary and permanent hardness.There is an explanation video available below. |
|
| 13. |
A suitable solvent for iodine and naphthalene is A. carbon (IV) sulphide B. ethanol C. water D. benzene |
|
| 14. |
Which of the following noble gases is commonly found in the atmosphere? A. Xenon B. Neon C. Helium D. Argon Detailed SolutionArgon, with the symbol Ar which is the third noble gas, in group 18 makes up about 1% of the Earth's atmosphere, making it the most common noble gas on Earth.There is an explanation video available below. |
|
| 15. |
N2O4(g) ↔ 2NO2(g) ΔH = +ve A. increase the value of the equilibrium constant B. decreases the value of the equilibrium constant C. increase in the reactant production D. shift the equilibrium to the left |
|
| 16. |
CH3COOH(aq) + OH-(aq) ↔ CH3COO-(aq) + H2O(l) A. conjugate base B. acid C. base D. conjugate acid |
|
| 17. |
How many cations will be produced from a solution of potassium aluminium tetraoxosulphate (VI)? A. 3 B. 4 C. 1 D. 2 |
|
| 18. |
Which of the following is NOT an alkali? A. NH3 B. Mg(OH)2 C. Ca(OH)2 D. NaOH |
|
| 19. |
An effect of thermal pollution on water bodies is that the A. volume of water reduces B. volume of chemical waste increase C. level of oxides of nitrogen increase D. level of oxygen reduces |
|
| 20. |
Which of the following is a deliquescent compound? A. NaNO3 B. CaCl2 C. CuO D. Na2CO3.10H2O |
| 11. |
What type of bond exits between an element X with atomic number 12 and Y with atomic number 17? A. Electrovalent B. Metallic C. Covalent D. Dative |
|
| 12. |
Hardness of water is mainly due to the presence of A. calcium hydroxide or magnesium hydroxide B. calcium trioxocarbonate (IV) or calcium tetraoxosulphate (VI) C. sodium hydroxide or magnesium hydroxide D. calcium chloride or sodium chloride salts Detailed SolutionSalts of Calcium and Magnesium are responsible for hardness of water. Bicarbonates, Carbonates, Chlorides and Sulfates of Calcium and Magnesium causes temporary and permanent hardness.There is an explanation video available below. |
|
| 13. |
A suitable solvent for iodine and naphthalene is A. carbon (IV) sulphide B. ethanol C. water D. benzene |
|
| 14. |
Which of the following noble gases is commonly found in the atmosphere? A. Xenon B. Neon C. Helium D. Argon Detailed SolutionArgon, with the symbol Ar which is the third noble gas, in group 18 makes up about 1% of the Earth's atmosphere, making it the most common noble gas on Earth.There is an explanation video available below. |
|
| 15. |
N2O4(g) ↔ 2NO2(g) ΔH = +ve A. increase the value of the equilibrium constant B. decreases the value of the equilibrium constant C. increase in the reactant production D. shift the equilibrium to the left |
| 16. |
CH3COOH(aq) + OH-(aq) ↔ CH3COO-(aq) + H2O(l) A. conjugate base B. acid C. base D. conjugate acid |
|
| 17. |
How many cations will be produced from a solution of potassium aluminium tetraoxosulphate (VI)? A. 3 B. 4 C. 1 D. 2 |
|
| 18. |
Which of the following is NOT an alkali? A. NH3 B. Mg(OH)2 C. Ca(OH)2 D. NaOH |
|
| 19. |
An effect of thermal pollution on water bodies is that the A. volume of water reduces B. volume of chemical waste increase C. level of oxides of nitrogen increase D. level of oxygen reduces |
|
| 20. |
Which of the following is a deliquescent compound? A. NaNO3 B. CaCl2 C. CuO D. Na2CO3.10H2O |