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 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 224cm3 100cm3 2 / 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 3 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to reversibility of equilibrium reactions electronegativity values of elements collision theory of reactions rate quantum numbers of electrons 4 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO2 SO2 CO NO2 5 / 50 Category: CHEMISTRY POST UTME An element X forms the following compounds with chlorine: XCl4, XCl3, XCl2. This illustrate the law of chemical proportions law of conservation of mass law of definite proportions law of multiple proportions 6 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces an aromatic hydrogenation cyclohexane margarine benzene 7 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is ethane propane butane methane 8 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table ionization energy electronegativity electron affinity atomic radius 9 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of wood fuel chlorofluorocarbons coal 10 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Substitution Oxidation polymerization Addition 11 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? Na2S CH3CO2Na Na2SO4 NaHSO4 12 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? oxygen chlorine hydrogen ammonia 13 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? magnetic azimuthally spin Principal 14 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NH3 H2S CO2 NO 15 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CHF3 CHCl3 CHI3 CCl4 16 / 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? 12.5moles 6.25moles 25moles 0.625moles 17 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 40g 4g 10g 20g 18 / 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 19 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanes amines alkanoic acids alkanols 20 / 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 6.4g 3.2g 96 21 / 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 limestone sulphur carbon 22 / 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 6.00dm3 60.0dm3 23 / 50 Category: CHEMISTRY POST UTME Element P, Q, R and S have 6, 11, 15 and 16 electrons respectively, therefore, P will form an ionic bond with R Q will form an electrovalent bond with S Q will form a covalent bond with S R will form an electrovalent bond with S 24 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure cellulose animal fibre protein starch 25 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have a triple bond a single bond double bond an ionic bond 26 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an Oxide that is insoluble in water amorphorous oxide of a metal Oxide that behaves as a base as well as an acid amorphorous oxide of a non-metal 27 / 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 evaporation liquefaction Zig Zag Motion 28 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? copper (ii)oxide sodium chloride iodine crystals magnessium ribon 29 / 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 30 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is van der waals forces covalent coordinates ionic 31 / 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 32 / 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 33 / 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 1.0atm 0.8atm 1.2atm 1.4atm 34 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are Sp2 hybridised SP hybridized SP2d hybridized SP3 hybridised 35 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in ZnCl2 NaClO KClO3 Cl2O7 36 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S NO NH3 CO2 37 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Carbon & Sulphur Carbon & Hydrogen Carbon & Carbon Hydrogen & oxygen 38 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 87% 33% 44% 55% 39 / 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 40 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce soap fats methyl propanoate alkanols 41 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is tin sodium calcium copper 42 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by sharing two electrons gaining two electrons losing two electrons gaining two proton 43 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for determining equilibrium positions tracing reaction paths sterilization of medical equipment dating elements 44 / 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 45 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except vulcanization of rubber manufacture of dyes coating of steel to prevent rusting manufacture of tetraoxosulphate (VI) acid 46 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? F2 Br2 I2 Cl2 47 / 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 48 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C15H32 C5H12 C3H8 C24H48 49 / 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 50 / 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 Your score is 0% Restart quiz