Question 1 of 20 4,306 total questions
The decarboxylation of ethanoic acid will produce carbon (IV)oxide and
A methane
B ethane
C propane
D butane
The reaction between ammonia and ethyl ethanoate produces
A propanol and ethanamide
B propanol and propanamide
C ethanol and propanamide
D ethanol and ethanamide
2- methylpropan-2-ol is an example of a
A dihydric alkanol
B tertiary alkanol
C secondary alkanol
D primary alkanol
Aluminium containers are frequently used to transport trioxonitrate (V) acid because aluminium
A has a silvery-white appearance
B has a low density
C does not react with the acid
D does not corrode
The coloured nature of transition metal ions are associated with their partially filled
A f- orbital
B s- orbital
C p-orbital
D d-orbital
Copper is displaced from the solution of its salts by most metals because it
A is a transition element
B is at the bottom of the activity series
C is very reactive
D has completely filled 3d-orbitals
A metal that forms soluble trioxosulphate (IV) ion is
A barium
B potassium
C manganese
D aluminium
Sulphur (IV)oxide is a strong reducing agent in the presence of water due to the formation of
A hydroxide ion
B sulpgur (Vl)oxide
C hydrogen sulhide
D trioxosulphate (IV) salt
Which of the gases is employed as an anaesthesia?
In the laboratory preparation of ammonia, the flask is placed in a slanting position so as to
A prevent condensed water from breaking the reaction flask
B enable the proper mixing of the reactions in the flask
C enhance the speed of the reaction
D prevent formation of precipitate
Which of the following compounds is a neutral oxide?
A Carbon (IV) oxide
B Sulphur (Vl) oixide
C Sulphur (IV) oxide
D Carbon (ll) oxide
the minimum amount of energy required for a reaction to take place is
A lattice energy
B ionization energy
C activation energy
D kinetic energy
In an endothermic reaction, if there is a loss in entropy the reaction will
A be indeterminate
B be spontaneous
C not be spontaneous
D be at equilibrium
In an electrochemical cell, polarization is caused by
A chlorine
B oxygen
C tetaoxsulphate (Vl) acid
D hydrogen
2H2 O (l) + 2F2(g) → 4HF(aq) + O2(g) .
A O2(g)
B H2 O(l)
C F2 (g)
D HF(aq)
An insoluble salt can be prepared by
A the reaction of trioxocarbonate (V) with an acid
B double decomposition
C the action of dilute acid on an insoluble base
D the reaction of metals with an acid
Which of the following substances is not a salt?
A Aluminium oxide
B Sodium hydrogentrioxosulphate (V)
C Sodium trioxocarbonate (V)
D Zinc chloride
Three drops of a 1.0 mol dm-3 solution of HCl was added to 20 cm3 of a solution of pH6.4. The pH of the resulting solution will be
A close to that of pure water
B less than 6.4
C greater than 6.4
D unaltered
10.0 dm3 of water was added to 2.0 mol dm-3 of 2.5dm3 solution of HCl. What is the concentration of the final solution in mol dm-3 ?
In a water body, too much sewage leads to
A a decrease in the temperature of the water which cause in death of aquatic animals
B an increase in the number of aquatic animals in the water
C an increase in the bacterial population which reduces the level of oxygen in the water
D a decrease in the bacterial population which increases the level of oxygen in the water
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