Question 1 of 20 87 total questions
In which of the following processes is biotechnology not applied?
A Manufacture of drugs
B Treatment of domestic sewage
C Production of alcoholic beverages
D Electroplating of metals
Which of the following substance is an alloy of lead?
A Brass
B Duralumin
C Stainless steel
D Soft solder
Which of the following pairs of solutions will produce a precipitate when mixed?
A Pb(NO3 )2(aq) and NaCI(aq)
B MgSO4(aq) and HCI(aq)
C ZnCI2(aq) and NaSO4(aq)
D NaOH(aq) and HNO3(aq)
Hardness in water can be removed by adding
A copper (ll) tetraoxosulphate (IV)
B sodium trioxocarbonate (IV)
C sodium chloride
D alum
Ethyne undergoes the following reactions except
A polymerisation
B addition
C substitution
D esterification
Fats are classified as
A hydrocarbons
B alkanoates
C alkanols
D carbohydrates
The colour of the solution formed when ethyne reacts with an acidic solution of potassium tetraoxomanganate (VII) is
A purple
B colourless
C green
D pink
Which of the following substances is a non-reducing sugar?
A Sucrose
B Glucose
C Fructose
D Maltose
What is the major product formed when C2 H5 OH reacts with CH3 COOH?
A C2 H5 COOCH3
B C2 HCOCH3
C CH3 COOC2 H5
D C3 H7 COOH
Reaction undergone by compounds with the general formula Cn H2n+2 include
A addition
B esterification
C substitution
D dehydration
Determine the mass of copper deposited by 4.0 moles of electrons in the reaction represented by the equation below: Cu2 (aq) + 2e- → Cu(s)
The main difference between a primary cell and a secondary cell is that the primary cell
A is an electrolytic cell but the secondary is not
B cannot be recharged but the secondary cell can
C can be recharged but the secondary cell cannot
D contains electrodes but the secondary cell does not
Which of the elements will burn in excess oxygen to form a product that is neutral to litmus?
A Carbon
B Hydrogen
C Sulphur
D Sodium
Which of the following reactions is sulphur (IV) oxidizing agent?
A 2HNO 3(aq) + SO2(g) → H2 SO4(aq) + 2NO2(g)
B 2KMnO 4(aq) + 5SO2(g) + 2H2 O → K2 SO4(aq) +MnSO4(aq) 2H2 SO4(aq)
C FeCI3(aq) + SO2(g) + 2H2 O(l) → FeCI 2(g) + 2HCI(g) + H2 SO4(aq)
D 2H2 S(g) + SO2(g) →2H2 O(l) + 3S(s)
Which of the following methods is suitable for preparing insoluble salts?
A Thermal decomposition
B Oxidation
C Double decomposition
D Neutralization
When ice is changing to water, its temperature remains the same because the heart gained is
A used to separate the molecules
B lost partially to the atmosphere
C used to increase the volume of ice
D less than the activation energy
Which of the following compounds dissolves readily in water?
A BaSO4
B CuSO3
C NH4 CI
D AgCI
Consider the reaction represented by the equation below, xNH3(g) + yCI2(g) → zHCI(g) + N2(g) The values of x,y and z are respectively
A 2, 4, 6
B 3, 2, 4
C 2, 3, 6
D 3, 2 6
A salt that absorbs moisture from the atmosphere without forming a solution is said to be
A efflorescent
B deliquescent
C hygroscopic
D insoluble
What process is involved in the reaction represented by the following equation? AICI3 + 3H2 O(l) → AI(OH) 3(s) + 3HCI(g)
A dehydration
B hydrolysis
C double decomposition
D Neutralization
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