Hello and Welcome to UTME CBT FREE Practice Test - Chemistry You are to attempt 40 Random Objectives Questions ONLY for 30 minutes. Supply Your Full Name in the text box below and begin immediately. Your time starts NOW! Full Name (Surname First): Location (City/State): 0.1 Faraday of electricity was passed through a solution of copper (II) sulphate. The maximum weight of copper deposited on the cathode would be ______ (Cu = 64) A. 3.2 g B. 32.0 g C. 16.0 g D. 6.4ABCD If the change in free energy of a system is -899 Jmol-1 and the entropy change is 10 Jmol-1k-1 at 25°C, calculate the enthalpy change. A. +2081 Jmol-1 B. -2081 Jmol-1 C. -649 Jmol-1 D. +649 Jmol-1ABCDOn oxidizing anhydrous iron (II) sulphate, in addition to producing iron (III) oxide, which of the following is produced? A. SO2(g) + FeS(s). B. SO3(g) + FeS(s). C. SO2(g) + SO3(g) D. SO2(g) + H2S(g)ABCDWhich of the following statements applies during the electrolysis of sodium hydroxide solution using platinum electrodes? A. Na+ ions are discharged at the cathode B. Hydrogen ions are discharged at the anode C. The concentration of sodium hydroxide decreases at both electrode compartmentsD. The concentration of sodium hydroxide increases at the cathode onlyABCD A compound contains 40.0% C, 6.7% H and 53.3% O. If the molecular mass of thecompound is 180, its molecular formula is _______ [C = 12, H = 1, O = 16] A. CH2O B. C3H6O3 C. C6H6O3 D. C6H12O6.ABCD Fehling’s solution can be used to distinguish between (a) CH3CHO and C2H5OH(b) CH3COCH3 and CH3COOCH3(c) CH3CHO and CH3COCH3(d) C2H5OH and CH2CH2COOHABCD The general formula of haloalkanes where X represents the halide is A. CnH2n-1X. B. CnH2nX. C. CnH2n+2X. D. CnH2n+1X.ABCD The constituent of baking powder that makes the dough to rise is ________ A. NaHCO3 B. NaOH C. Na2CO3 D. NaCI.ABCD Which of the following is a deliquescent compound? A. Na2CO3 B. CaCl2 C. CuO . D. Na2CO3. 10H2OABCDThe periodic classification of the element is an arrangement of the elements ¡n order of their ____ A. atomic weights B. isotopic weights C. molecular weights D. atomic numbersABCDFive compounds R, T, W, X, and Y form the following compounds: i. a basic hydride R.H, ii. anacidic hydride YH, iii. amphoteric oxide W2O3, XO2.Which of the elements is an alkali? A. R B. T C. W D. XABCD Which of the following questions is correct about the periodic table? A. The non-metallic properties of the elements tend to decrease across each period.B. The valence electrons of the elements increase progressively across the period.C. Elements in the same group have the same number of electron shells.D. Elements in the same period have the same number of valence electrons.ABCD An element X has electron configuration 1s2 2s2 2p6 3s2 3p5. Which of the following statements is correct about the element? A. It has a completely filled p-orbital.B. It has 5 electrons in its outermost shellC. It belongs to group II on the periodic table.D. It is a halogen.ABCD The IUPAC nomenclature of the compound above is ______ A. 2-bromo-3-chlorobutanol.B. 3-bromo-2-chlorobutanol.C. 3-chloro-2-bromobutanol.D. 2-chloro-3-bromobutanol.ABCD In the reaction above, an ¡increase in temperature will A. increase the value of the equilibrium constantB. decrease the value of the equilibrium constantC. increase the reactant productionD. shift the equilibrium to the left.ABCDWhich of the following metals cannot replace hydrogen from water or steam? A. Sodium B. Magnesium C. Copper D. CalciumABCDWeighed salts Y and Z were left exposed in the laboratory overnight. In the morning Y had gained weight, and Z had become liquid. What conclusion could be drawn about the nature of the two salts?A. Z is efflorescent B. Y and Z are efflorescentC. Y and Z are deliquescent. D. Y and Z are hygroscopicABCD Polystyrene is widely used as packaging materials for fragile objects during transportation because of its A. lightness. B. low density. C. high density. D. high compressibility.ABCD Which of the following will produce a solution with pH less than 7 at equivalent point? A. HNO3 + NaOH. B. H2SO4 + KOH. C. HCI + Mg(OH)2. D. HNO + KOH.ABCD 2Na2O2(s) + 2H2O(l) → 4NaOH(s) + O2(g) The substance that is oxidized in the reaction above is ______ A. 2Na2O2(s) B. NaOH(aq) C. H2O(l) D. O2(g)ABCD The compound above exhibits A. geometric isomerism B. optical isomerism C. structural isomerism D. positional isomerism.ABCD Beryllium and aluminium have similar properties because they _______ A. are both metals.B. belong to the same group.C. belong to the same period.D. are positioned diagonally to each other.ABCD Bronze is preferred to copper in the making of medals because it ______ A. is stronger B. can withstand low temperature C. is lighter D. has low tensile strength.ABCDBy means of filtration, one component can be obtained pure from an aqueous mixture of sodium chloride and ______ A. potassium nitrate B. sand C. lead nitrate D. sugar (glucose)ABCD How many cations will be produced from a solution of potassium aluminium tetraoxosulphate (VI)? A. 3 B. 4 C. 1 D. 2ABCDWhen carbon dioxide is bubbled into limewater a white precipitate ¡s formed. If the passage of the gas is continued the precipitate disappears. The reason for this is ______ A. calcium carbonates formed which on reaction dissolves B. calcium hydrogen carbonate is precipitated and then dissolves C. calcium carbonate is formed which on reaction with further carbon dioxide forms soluble calcium hydrogen carbonate D. concentration of the solution has occurred with the deposition of calcium hydroxideABCD The main product of the reaction between phosphorus(V) chloride and ethanol is (a) chloroethane (b) chloromethane (c) dichloromethane (d) chloroetheneABCDGiven that M is the mass of a substance deposited during electrolysis and Q is the quantity of electricity consumed, then Faraday’s first law can be written as _________ABCDThe structural formula of ethanoic acid is ______ABCD Water is said to be temporarily hard when it contains ________ A. Ca(HCO3)2 and Mg(HCO3)3 salts.B. Ca(HCO3)2 and CaCO3 salts.C. Mg(HCO3)2 and CaSO4 salts.D. CaSO4 and Ca(HCO3)2 saltsABCD In the deduction of ethyl ethanoate with LiAlH4, the product obtained is ______ (a) ethanol (b) ethane (c) ethanoic acid (d) ethaneABCDThe vapour density of a gas may be defined as _______A. the mass of a unit volume of the gas compared to an equal volume of water vapour B. the mass of a unit volume of the gas compared to an equal volume of hydrogen C. the mass of a unit volume of the gas compared to an equal volume of oxygenD. the mass of a unit volume of the gas minus the vapour pressure of waterABCDIf excess zinc is added to a bluish green solution of copper (II) sulphate, and the excess zinc filtered off after completion of reaction, a colourless solution is obtained because ______ A. both zinc and copper are metals B. the sulphate radical and the zinc ion are divalent C. zinc is more electropositive than copperD. both zinc and copper form depositive ions in solutionABCD The final oxidation product of alkanol, alkanal and alkanones is _______ A. alkanoic acid B. alkanoyl halide C. alkanoate D. alkanamideABCD The diagram above best illustrates the effect of decrease in ______ A. concentration B. temperature C. surface area D. pressure.ABCD The molecular lattice of iodine is held together by _______ A. dative bond B. metallic bond C. hydrogen bond D. van der Waal’s forces.ABCDThe mathematical expression of pH is _______ABCD An organic compound has an empirical formula CH2O and vapour density of 45. What is its molecular formula? [C=12, H=1, 0=16] A. C3H7OH B. C2H5OH C. C3H5O3 D. C2H4O2ABCDThe IUPAC name for is _______ A. 2-methylbut-3-ene B. 2-methylbut-4-ene C. 3-methylbut-2-ene D. 3-methylbut-1-eneABCDAn experimental test of the Law of Conservation of Mass is illustrated in the diagram. In practice, the flask is weighed before and after reaction between solutions X and Y. Which of the following pairs of solutions will be unsuitable for the experiment? A. X = hydrochloric acid; Y = silver nitrate B. X = barium chloride; Y = dilute sulphuric acid C. X = hydrochloric acid; Y = sodium carbonateD. X = hydrochloric acid; Y = lead nitrateABCD1 out of GREAT! You finished before the expiration of the 30 minutes allotted to you. You may want to preview before submission, else, Click the submit button below to see your score To submit your quiz and see your score/performance report; Make sure you supply your Full Name and Location in the form above. Unable to submit your quiz? 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