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