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