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