Year :
2009
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
21 - 30 of 53 Questions
| # | Question | Ans |
|---|---|---|
| 21. |
Which of the following expressions correctly represents Charles' law? A. PV = K B. R \(\alpha \frac{1}{\sqrt{p}\) C. PV = RT D. V = KT |
D |
| 22. |
In a mixture of gases which do not react chemically together, the pressure exerted by the individual gases is called A. atmospheric pressure B. partial pressure C. total pressure D. vapour pressure |
B |
| 23. |
In a chemical reaction, ∆H is positive when A. H (product) >H (reactant) B. H(product) < H (reactant) C. H (product) = H (reactant) D. H (product) = Zero (reactant) |
A |
| 24. |
Consider the reaction represented by the following equation: H 2(g) + \(\frac{1}{2}\) O(g) → H 2O(g) ∆H =-285.8 KJmo -1 ∆H represents the enthalpy of A. formation B. hydration C. neutralization D. solution |
A |
| 25. |
Salts that contain water of crystallization are said to be A. anhydrous B. deliquescent C. efflorescent D. hydrated |
D |
| 26. |
Which of the following dilute acids does not react with metals to liberate hydrogen? A. CH3COOH(aq) B. HCI(aq) C. H2SO4(aq) D. HNO3(aq) |
D |
| 27. |
Which of the following compounds is not a double salt? A. Zn(OH)NO3 B. KAI(SO4)2 C. KCr(SO4)2 D. (NH4)2Fe(SO4)2 |
A |
| 28. |
Which of the following hydroxides will readily dissolved in water? A. Cu(OH)2 B. NaOH C. Pb(OH)2 D. Zn(OH)2 |
B |
| 29. |
Which of the following acids from normal salt only? A. Tetraoxosulphate (IV) acid B. Tetraoxophosphate (V) acid C. Trioxonitrate (V) acid D. Trioxosulphate (IV) acid |
C |
| 30. |
A solution that contains as much solute as it can dissolve at a given temperature is said to be A. concentrated B. saturated C. supersaturated D. unsaturated |
B |
| 21. |
Which of the following expressions correctly represents Charles' law? A. PV = K B. R \(\alpha \frac{1}{\sqrt{p}\) C. PV = RT D. V = KT |
D |
| 22. |
In a mixture of gases which do not react chemically together, the pressure exerted by the individual gases is called A. atmospheric pressure B. partial pressure C. total pressure D. vapour pressure |
B |
| 23. |
In a chemical reaction, ∆H is positive when A. H (product) >H (reactant) B. H(product) < H (reactant) C. H (product) = H (reactant) D. H (product) = Zero (reactant) |
A |
| 24. |
Consider the reaction represented by the following equation: H 2(g) + \(\frac{1}{2}\) O(g) → H 2O(g) ∆H =-285.8 KJmo -1 ∆H represents the enthalpy of A. formation B. hydration C. neutralization D. solution |
A |
| 25. |
Salts that contain water of crystallization are said to be A. anhydrous B. deliquescent C. efflorescent D. hydrated |
D |
| 26. |
Which of the following dilute acids does not react with metals to liberate hydrogen? A. CH3COOH(aq) B. HCI(aq) C. H2SO4(aq) D. HNO3(aq) |
D |
| 27. |
Which of the following compounds is not a double salt? A. Zn(OH)NO3 B. KAI(SO4)2 C. KCr(SO4)2 D. (NH4)2Fe(SO4)2 |
A |
| 28. |
Which of the following hydroxides will readily dissolved in water? A. Cu(OH)2 B. NaOH C. Pb(OH)2 D. Zn(OH)2 |
B |
| 29. |
Which of the following acids from normal salt only? A. Tetraoxosulphate (IV) acid B. Tetraoxophosphate (V) acid C. Trioxonitrate (V) acid D. Trioxosulphate (IV) acid |
C |
| 30. |
A solution that contains as much solute as it can dissolve at a given temperature is said to be A. concentrated B. saturated C. supersaturated D. unsaturated |
B |