Which of the following bonds are broken when ethanol is boiled?
I. Covalent bonds
II. Ionic bonds
III. Hydrogen bonds
- A. I only
- B. II only
- C. III only
- D. I, II, III
Which of the following salts when dissolved in water will form a solution that will change blue litmus to red?
- A. CH3COONa
- B. NH4Cl
- C. NaCl
- D. KCl
On evaporation to dryness, 3503 of saturated solution of salt Z gave 55.5g of salt. What is the solubility of the salt? [Z = 101]
- A. 1.57 moldm-3
- B. 3.14 moldm-3
- C. 6.28 moldm-3
- D. 12.56 moldm-3
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. I, II. III and IV
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
The refreshing characteristic taste of fizzy drinks is due ot the presence of
- A. Carbon(IV)oxide
- B. Glucose
- C. Hydrogen
- D. Sodium Citrate
Consider the following reaction equation
H3O+(aq) + OH(aq) \(\rightarrow\) 2H2O(1)
The reaction represents
- A. Esterification
- B. Hydrolysis
- C. Neutralization
- D. Redox
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
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
An aqueous solution of (NH4)2 SO4 is
- A. Acidic
- B. Alkaline
- C. Amphoteric
- D. Neutral
The energy which accompanies the addition of an electron to an isolated gaseous atom is
- A. Atomization
- B. Electronegativity
- C. Electron affinity
- D. Ionization
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
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
The general gas equation \(\frac{PV}{T}\) = K is a combination of
- A. Boyle's and Charles' laws
- B. Boyle's and Graham's laws
- C. Charles' and Graham's laws
- D. Dalton's and Graham's laws
Which of the following apparatus can be used to measure a specific volume of a liquid accurately?
- A. Beaker
- B. Conical flask
- C. Measuring cyclinder
- D. Pipette
Which of the following statements about solids is correct?
- A. Solid particles are less orderly than those of a liquid
- B. Solid have lower densities than liquids
- C. Solid particles have greater kinetic energies than those of liquids
- D. Solid particles cannot be easily compressed
How many moles of oxygen would contain 1.204 x 1024 molecules?
[Avogadro’s constant (NA) = 6.02 x 1023]
- A. 1
- B. 2
- C. 3
- D. 4
An element X froms the following oxides X2O, XO and XO2. This phenomenon illustrates the law of________?
- A. Conservation of mass
- B. Definite proportion
- C. Mass action
- D. Multiple proportion
The bond formed between H2O and H+ to form the hydroxonium H3O+ is
- A. Dative
- B. Covalent
- C. Electrovalent
- D. Ionic
The minimum amount of energy required for effective collisions between reacting particles is known as
- A. Activation energy
- B. Bond energy
- C. Kinetic energy
- D. Potential energy
Which of the following elements would produce coloured ion in agueous solution?
- A. Calcuim
- B. Copper
- C. Magnesuim
- D. Sodium