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