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 Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Carbon & Hydrogen Hydrogen & oxygen Carbon & Carbon Carbon & Sulphur 2 / 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 3 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? I2 F2 Br2 Cl2 4 / 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) 89 82 92 72 5 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is coordinates ionic covalent van der waals forces 6 / 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 7 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to quantum numbers of electrons electronegativity values of elements reversibility of equilibrium reactions collision theory of reactions rate 8 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because it is commonly adulterated by the tappers and sellers 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. 9 / 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 PbS HNO3 10 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CHI3 CCl4 CHCl3 CHF3 11 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 55% 44% 33% 87% 12 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of fuel coal chlorofluorocarbons wood 13 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with Tollen’s reagent hydrogen cyanide sodium hydrogen sulphite 2, 4 – dinitrophenylhydrazine 14 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IIIA group VIIA group IIA group IA 15 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by sharing two electrons gaining two electrons gaining two proton losing two electrons 16 / 50 Category: CHEMISTRY POST UTME An element X forms the following compounds with chlorine: XCl4, XCl3, XCl2. This illustrate the law of conservation of mass law of chemical proportions law of definite proportions law of multiple proportions 17 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NH3 NO H2S CO2 18 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S CO2 NH3 NO 19 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by filtration, evaporation and dissolution in water evaporation, dissolution in water and filtration dissolution in water, evaporation and filtration dissolution in water, filtration and evaporation 20 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? hydrogen chlorine ammonia oxygen 21 / 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 5.0 3.0 2.0 22 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 40g 4g 20g 10g 23 / 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 Zig Zag Motion evaporation liquefaction 24 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for tracing reaction paths sterilization of medical equipment determining equilibrium positions dating elements 25 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? magnetic Principal azimuthally spin 26 / 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 27 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? sodium chloride copper (ii)oxide iodine crystals magnessium ribon 28 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C15H32 C3H8 C24H48 C5H12 29 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; ethanoic acid and ethene methanoic acid and ethylene acetic acid and ethane acetic acid and ethene 30 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in Cl2O7 KClO3 NaClO ZnCl2 31 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is copper tin calcium sodium 32 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces margarine benzene an aromatic hydrogenation cyclohexane 33 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for amines alkanoic acids alkanols alkanes 34 / 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 224cm3 100cm3 168cm3 112cm3 35 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Substitution polymerization Addition Oxidation 36 / 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 18.80dm3 1.88dm3 6.00dm3 37 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an amorphorous oxide of a metal Oxide that is insoluble in water Oxide that behaves as a base as well as an acid amorphorous oxide of a non-metal 38 / 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 12.5moles 25moles 6.25moles 39 / 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 there is no further change in temperature the rate of forward and backward reactions are equal 40 / 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 cryolite sulphur limestone 41 / 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 96 6.4g 4.8g 42 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are SP2d hybridized SP hybridized Sp2 hybridised SP3 hybridised 43 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce methyl propanoate alkanols fats soap 44 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure starch protein cellulose animal fibre 45 / 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 Q will form a covalent bond with S Q will form an electrovalent bond with S P will form an ionic bond with R 46 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except vulcanization of rubber manufacture of dyes manufacture of tetraoxosulphate (VI) acid coating of steel to prevent rusting 47 / 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 1.4atm 0.8atm 1.0atm 48 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO2 SO2 CO NO2 49 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is butane propane methane ethane 50 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? NaHSO4 Na2SO4 Na2S CH3CO2Na Your score is 0% Restart quiz