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 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 0.8atm 1.4atm 1.0atm 2 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by evaporation, dissolution in water and filtration filtration, evaporation and dissolution in water dissolution in water, filtration and evaporation dissolution in water, evaporation and filtration 3 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; ethanoic acid and ethene acetic acid and ethane methanoic acid and ethylene acetic acid and ethene 4 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of NO2 CO2 CO SO2 5 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Carbon & Carbon Carbon & Sulphur Hydrogen & oxygen Carbon & Hydrogen 6 / 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 7 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C24H48 C5H12 C15H32 C3H8 8 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with sodium hydrogen sulphite hydrogen cyanide Tollen’s reagent 2, 4 – dinitrophenylhydrazine 9 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because the sugar content is converted into alcohol microbiological activity results in the production of organic acids within it. the CO2 formed during the fermentation process has a sour taste it is commonly adulterated by the tappers and sellers 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 224cm3 168cm3 100cm3 112cm3 11 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by losing two electrons sharing two electrons gaining two electrons gaining two proton 12 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 87% 44% 55% 33% 13 / 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 14 / 50 Category: CHEMISTRY POST UTME Equilibrium is sad to be attained in a reversible reaction when the rate of forward and backward reactions are equal there is no further change in temperature all the products have been formed all the reactants have been used up 15 / 50 Category: CHEMISTRY POST UTME Element P, Q, R and S have 6, 11, 15 and 16 electrons respectively, therefore, Q will form a covalent bond with S Q will form an electrovalent bond with S P will form an ionic bond with R R will form an electrovalent bond with S 16 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an Oxide that behaves as a base as well as an acid Oxide that is insoluble in water amorphorous oxide of a non-metal amorphorous oxide of a metal 17 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is methane butane ethane propane 18 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except manufacture of tetraoxosulphate (VI) acid vulcanization of rubber manufacture of dyes coating of steel to prevent rusting 19 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? hydrogen ammonia chlorine oxygen 20 / 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 72 92 21 / 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 6.00dm3 18.80dm3 1.88dm3 22 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of chlorofluorocarbons coal wood fuel 23 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NH3 CO2 NO H2S 24 / 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 liquefaction Brownian motion Zig Zag Motion 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? 4.0 3.0 5.0 2.0 26 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? spin magnetic azimuthally Principal 27 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is copper sodium tin calcium 28 / 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 29 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S NO CO2 NH3 30 / 50 Category: CHEMISTRY POST UTME Which of the following is needed to produce a slag during the extraction of iron in the blast furnace? limestone cryolite carbon sulphur 31 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? CH3CO2Na Na2S Na2SO4 NaHSO4 32 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are SP3 hybridised SP hybridized SP2d hybridized Sp2 hybridised 33 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? sodium chloride iodine crystals magnessium ribon copper (ii)oxide 34 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have a triple bond double bond an ionic bond a single bond 35 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is coordinates van der waals forces covalent ionic 36 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CCl4 CHI3 CHCl3 CHF3 37 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce fats methyl propanoate soap alkanols 38 / 50 Category: CHEMISTRY POST UTME When a solution of silver (I) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is HNO3 PbS H2S Ag2S 39 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? Cl2 F2 I2 Br2 40 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for dating elements sterilization of medical equipment tracing reaction paths determining equilibrium positions 41 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanols alkanoic acids alkanes amines 42 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 20g 10g 40g 4g 43 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure protein animal fibre cellulose starch 44 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in ZnCl2 NaClO Cl2O7 KClO3 45 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces an aromatic hydrogenation margarine cyclohexane benzene 46 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except coating of steel to prevent rusting vulcanization of rubber manufacture of tetraoxosulphate (VI) acid manufacture of dyes 47 / 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 48 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table ionization energy electron affinity electronegativity atomic radius 49 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IIA group IA group VIIA group IIIA 50 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Oxidation Substitution polymerization Addition Your score is 0% Restart quiz