Chemistry, 2016, WASSCE/WAEC MAY/JUNE, Exam, Paper 1 | Objectives

Paper Info

Year :

2016

Title :

Chemistry

Exam :

WASSCE/WAEC MAY/JUNE

Paper 1 | Objectives

21 - 30 of 50 Questions

#	Question	Ans
21.	The spreading of the scent of a flower in a garden is an example of_____? A. Brownian motion B. Diffusion C. Osmosis D. Tynadal effect	B
22.	Propane carbon(IV)oxide diffuse at the same rate because [H = 1.00, C = 12.0, O = 16.0] A. They are both gases B. Their molecules contain carbon C. They have the same relative molecular mass D. Both are denser than air	C
23.	The energy which accompanies the addition of an electron to an isolated gaseous atom is A. Atomization B. Electronegativity C. Electron affinity D. Ionization	C
24.	An aqueous solution of (NH4)2 SO4 is A. Acidic B. Alkaline C. Amphoteric D. Neutral Show Content Detailed Solution Ammonium sulphate is an ACIDIC SALT. This is because it is formed when sulphuric acid reacts with ammonia. Since, sulphuric acid is a strong acid and ammonia is a weak base, so it gets acidic in nature.	A
25.	When NH₄Cl_(s) is dissolved in water, the container feels cold to touch. This implies A. The process is endothermic B. The process is exothermic C. NH₄Cl forms a saturated solution D. NH₄Cl is highly soluble in water	A
26.	The pH of four solutions M,N,Q and R are 2,6,8 and 11 respectively. Which of the following deductions about the solutions is correct? A. The pH of N is increased when the solution is diluted B. The pH of Q is increased when the solution is evaporated C. M is the most alkaline solution D. R is the most acidic solution	A
27.	Consider the following reaction equation H₃O⁺_(aq) + OH_(aq) \(\rightarrow\) 2H₂O₍₁₎ The reaction represents A. Esterification B. Hydrolysis C. Neutralization D. Redox	C
28.	The refreshing characteristic taste of fizzy drinks is due ot the presence of A. Carbon(IV)oxide B. Glucose C. Hydrogen D. Sodium Citrate	A
29.	Chemical equilibrium is attained when A. All the reactants have been completely used up B. The reaction goes to completion C. The concentration of reactants and products remain constant D. The concentration of reactants and products are equal	C
30.	Which of the following factors will affect the rate of the reaction represented by the following equation? 2HCl(aq) + CaCO3(s) \(\rightarrow\) CaCl2(aq) + H2O(1) + CO2(g) I. Pressure II.Concentration III. Nature of reactants IV. Temperature A. I and II only B. II, III and IV only C. I, II and III only D. III and IV Show Content Detailed Solution All others except pressure would affect the equilibrium of the system.	B

21.	The spreading of the scent of a flower in a garden is an example of_____? A. Brownian motion B. Diffusion C. Osmosis D. Tynadal effect	B
22.	Propane carbon(IV)oxide diffuse at the same rate because [H = 1.00, C = 12.0, O = 16.0] A. They are both gases B. Their molecules contain carbon C. They have the same relative molecular mass D. Both are denser than air	C
23.	The energy which accompanies the addition of an electron to an isolated gaseous atom is A. Atomization B. Electronegativity C. Electron affinity D. Ionization	C
24.	An aqueous solution of (NH4)2 SO4 is A. Acidic B. Alkaline C. Amphoteric D. Neutral Show Content Detailed Solution Ammonium sulphate is an ACIDIC SALT. This is because it is formed when sulphuric acid reacts with ammonia. Since, sulphuric acid is a strong acid and ammonia is a weak base, so it gets acidic in nature.	A
25.	When NH₄Cl_(s) is dissolved in water, the container feels cold to touch. This implies A. The process is endothermic B. The process is exothermic C. NH₄Cl forms a saturated solution D. NH₄Cl is highly soluble in water	A

26.	The pH of four solutions M,N,Q and R are 2,6,8 and 11 respectively. Which of the following deductions about the solutions is correct? A. The pH of N is increased when the solution is diluted B. The pH of Q is increased when the solution is evaporated C. M is the most alkaline solution D. R is the most acidic solution	A
27.	Consider the following reaction equation H₃O⁺_(aq) + OH_(aq) \(\rightarrow\) 2H₂O₍₁₎ The reaction represents A. Esterification B. Hydrolysis C. Neutralization D. Redox	C
28.	The refreshing characteristic taste of fizzy drinks is due ot the presence of A. Carbon(IV)oxide B. Glucose C. Hydrogen D. Sodium Citrate	A
29.	Chemical equilibrium is attained when A. All the reactants have been completely used up B. The reaction goes to completion C. The concentration of reactants and products remain constant D. The concentration of reactants and products are equal	C
30.	Which of the following factors will affect the rate of the reaction represented by the following equation? 2HCl(aq) + CaCO3(s) \(\rightarrow\) CaCl2(aq) + H2O(1) + CO2(g) I. Pressure II.Concentration III. Nature of reactants IV. Temperature A. I and II only B. II, III and IV only C. I, II and III only D. III and IV Show Content Detailed Solution All others except pressure would affect the equilibrium of the system.	B