Question 1Which of the following statement explains why tetraoxosulphate (VI) acid is regarded as a strong acid? A.the acid is concentratedB.the acid is highly corrosiveC.the acid is completely ionizedD.Tetraoxosulphate (vi) ions are very reactiveObjective Show full explanation
Question 2Which of the following is not correct of glucose and fructose?A.They are structural isomersB.They reduce Fehling's solutionC.They can be obtained by the hydrolysis of starchD.they are readily fermented by enzymeObjective Show full explanation
Question 3Which of the following is normally used for drying ammonia gas?A.concentrated tetraoxosulphate (VI) aciaB.calcium oxideC.Anhydrous calcium chlorideD.phosphorus (V) OxideObjective Show full explanation
Question 4Nuclear reactions can be used in the following except A.gauging the thickness of objectsB.making atomic bombsC.generating electricityD.purifying waterObjective Show full explanation
Question 5The following metals are extracted by the electrolytes method exceptA.potassiumB.tinC.calciumD.mangesiumObjective Show full explanation
Question 6PMS (petrol) can be obtained from AGO (diesel) byA.distillationB.crackingC.catalystsD.polymerizationObjective Show full explanation
Question 7The separation of a mixture of calcium trioxcarbonate (IV) and sodium trioxocarbonatc(IV) is most easily carried out by using the differences in their A.physical statesB.melting pointsC.solubilityD.boiling pointsObjective Show full explanation
Question 8What is the amount (in mole) of sodium trioxocarbonate (IV) in 5.3g of the compound? (Na = 23; C = 12; 0 = 16) A.0.05B.0.10C.0.50D.0.20Objective Show full explanation
Question 9Brass is an alloy of copper and magnesiumA.Copper and IronB.copper and chromiumC.copper and zincD.copper and tinObjective Show full explanation
Question 10The products of the electrolysis of dilute sodium chloride solution with platinum electrodes are A.hydrogen and oxygenB.oxygen and chlorineC.Oxygen and waterD.chlorine and waterObjective Show full explanation
Question 11when starch undergoes complete enzyme-catalyzed hydrolysis, the resulting product is A.glucoseB.maltoseC.sucroseD.fructoseObjective Show full explanation
Question 12Which of the following is not a direct petroleum product? A.EthanolB.MethaneC.VaselineD.KeroseneObjective Show full explanation
Question 13Which of the following properties is not characteristic of electrovalent compound? A.formation of crystalline solidsB.solubility in polar solventsC.High vapour pressuresD.High melting and boiling points.Objective Show full explanation
Question 14compound that have the same molecular formula but different structures are said to be A.AllotropicB.polymericC.isomericD.isotopicObjective Show full explanation
Question 15Water from a river contaminated by sodium hydroxide waste will have a PH of about A.1B.3C.7D.9Objective Show full explanation
Question 16Which of the following is suitable for determining different isotopes present in an element which exhibits isotopy?A.Isotope counterB.cathode Ray tubeC.Mass spectrometerD.Geiger Muller CounterObjective Show full explanation
Question 17When iron rusts, it undergoes A.deliquescenceB.chemical dpositionC.hydrolysisD.redox reactionObjective Show full explanation
Question 18When sucrose is warmed with fehling's solution A.the solution turns milkyB.a brick -red precipitate is formedC.there is no precipitateD.a blue-black colouration is produced.Objective Show full explanation
Question 19which of the following minerals contains fluorine as one of its constituent element A.cryoliteB.BauxiteC.KaolinD.MicaObjective Show full explanation
Question 20Which of the following pieces of apparatus can be used for drawing a current of air through a liquid? A.wash bottleB.AspiratorC.pipetteD.capillary tubeObjective Show full explanation
Question 21The green house effect is a climate condition associated with the presence of excess A.carbon (IV) oxideB.hydrogen sulphideC.ammonia gasD.nitrogen (II) oxideObjective Show full explanation
Question 22Electrovalent compounds are characterized by A.solubility in ethanolB.high molar massC.high melting pointD.strong oxidizing abilityObjective Show full explanation