CHEMISTRY POST UTME QUESTIONS & ANSWERS HomePOST UTME/POST JAMB Past Question & AnswersCHEMISTRY POST UTME QUESTIONS & ANSWERS Practice this CHEMISTRY POST UTME exam questions and answers Our experts have provided correct answers to these questions. 0% CHEMISTRY POST UTME (APP) CHEMISTRY POST UTME CHEMISTRY POST UTMEPractice with our Post UTME CBT for Universities, Polytechnics, College of Agriculture, College ofMedicine, College of Technology and College of Education and pass your examination. 1 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by dissolution in water, evaporation and filtration filtration, evaporation and dissolution in water dissolution in water, filtration and evaporation evaporation, dissolution in water and filtration 2 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for sterilization of medical equipment dating elements determining equilibrium positions tracing reaction paths 3 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 33% 55% 44% 87% 4 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C24H48 C15H32 C3H8 C5H12 5 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are Sp2 hybridised SP hybridized SP2d hybridized SP3 hybridised 6 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of wood coal fuel chlorofluorocarbons 7 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is ionic covalent van der waals forces coordinates 8 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is methane propane ethane butane 9 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? I2 Cl2 Br2 F2 10 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in KClO3 ZnCl2 NaClO Cl2O7 11 / 50 Category: CHEMISTRY POST UTME Which of the following is needed to produce a slag during the extraction of iron in the blast furnace? cryolite carbon limestone sulphur 12 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 4g 40g 20g 10g 13 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; methanoic acid and ethylene acetic acid and ethane acetic acid and ethene ethanoic acid and ethene 14 / 50 Category: CHEMISTRY POST UTME When a solution of silver (I) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is Ag2S HNO3 H2S PbS 15 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except coating of steel to prevent rusting manufacture of tetraoxosulphate (VI) acid manufacture of dyes vulcanization of rubber 16 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except vulcanization of rubber manufacture of dyes coating of steel to prevent rusting manufacture of tetraoxosulphate (VI) acid 17 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Oxidation polymerization Substitution Addition 18 / 50 Category: CHEMISTRY POST UTME 0.499g of CuSO4.XH2O when heated to constant weight gave a residue of 0.346g. What is the value of X? 4.0 3.0 5.0 2.0 19 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CCl4 CHI3 CHCl3 CHF3 20 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IIIA group VIIA group IA group IIA 21 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by sharing two electrons losing two electrons gaining two proton gaining two electrons 22 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Carbon & Sulphur Carbon & Hydrogen Hydrogen & oxygen Carbon & Carbon 23 / 50 Category: CHEMISTRY POST UTME Element P, Q, R and S have 6, 11, 15 and 16 electrons respectively, therefore, Q will form a covalent bond with S Q will form an electrovalent bond with S P will form an ionic bond with R R will form an electrovalent bond with S 24 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have a single bond double bond a triple bond an ionic bond 25 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanoic acids alkanols amines alkanes 26 / 50 Category: CHEMISTRY POST UTME The movement of liquid molecules from the surface of the liquid to the gaseous phase above it is known as Zig Zag Motion liquefaction evaporation Brownian motion 27 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce alkanols methyl propanoate fats soap 28 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to electronegativity values of elements collision theory of reactions rate quantum numbers of electrons reversibility of equilibrium reactions 29 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces benzene cyclohexane an aromatic hydrogenation margarine 30 / 50 Category: CHEMISTRY POST UTME A current of 4.0 amperes was passed through copper (II) tetraoxosulphate (IV) solution for one hour using copper electrodes. What was the mass of copper deposited? (Cu =64, IF = 96500C) 4.8g 96 3.2g 6.4g 31 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? spin Principal azimuthally magnetic 32 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? NaHSO4 Na2S CH3CO2Na Na2SO4 33 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NO H2S CO2 NH3 34 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an Oxide that is insoluble in water amorphorous oxide of a non-metal Oxide that behaves as a base as well as an acid amorphorous oxide of a metal 35 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure starch protein animal fibre cellulose 36 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? hydrogen oxygen chlorine ammonia 37 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of NO2 CO2 CO SO2 38 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S NH3 NO CO2 39 / 50 Category: CHEMISTRY POST UTME A gaseous mixture of 80.0g of oxygen and 56.0g of nitrogen has a total pressure of 1.8atm. The partial pressure of oxygen in the mixture is 1.0atm 1.2atm 0.8atm 1.4atm 40 / 50 Category: CHEMISTRY POST UTME 3.0g of a mixture of potassium carbonate and potassium chloride were dissolved in a 250cm3 standard flask.25cm3 of this solution required 40.00cm3 of 0.01M HCl for neutralization. What is the percentage by weight of k2CO3 in the mixture? (k = 39, O = 16, C = 12) 92 82 72 89 41 / 50 Category: CHEMISTRY POST UTME Equilibrium is sad to be attained in a reversible reaction when all the products have been formed there is no further change in temperature the rate of forward and backward reactions are equal all the reactants have been used up 42 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table electronegativity ionization energy electron affinity atomic radius 43 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because the sugar content is converted into alcohol it is commonly adulterated by the tappers and sellers microbiological activity results in the production of organic acids within it. the CO2 formed during the fermentation process has a sour taste 44 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? magnessium ribon iodine crystals sodium chloride copper (ii)oxide 45 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with 2, 4 – dinitrophenylhydrazine Tollen’s reagent sodium hydrogen sulphite hydrogen cyanide 46 / 50 Category: CHEMISTRY POST UTME Given that the molecular mass of iron is 56 and that of oxygen is 16, how many moles of iron (III) oxide will be contained in 1kg of the compound? 0.625moles 25moles 6.25moles 12.5moles 47 / 50 Category: CHEMISTRY POST UTME An element X forms the following compounds with chlorine: XCl4, XCl3, XCl2. This illustrate the law of multiple proportions law of conservation of mass law of chemical proportions law of definite proportions 48 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is sodium copper tin calcium 49 / 50 Category: CHEMISTRY POST UTME 0.0075 mole of calcium trioxocarbonate (iv) is added to 0.015 mole of a solution of HCl. The volume of gas evolved at S.T.P is 168cm3 224cm3 112cm3 100cm3 50 / 50 Category: CHEMISTRY POST UTME At 25oC and 1atm, a gas occupies a volume of 1.50dm3. What volume will it occupy at 100 oC and 1atm? 60.0dm3 1.88dm3 6.00dm3 18.80dm3 Your score is 0% Restart quiz Share this post: Share on X (Twitter) Share on Facebook Share on LinkedIn Share on Email Share on WhatsApp
