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 The following uses radioactive isotopes except for tracing reaction paths sterilization of medical equipment determining equilibrium positions dating elements 2 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S CO2 NO NH3 3 / 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 168cm3 112cm3 224cm3 4 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of chlorofluorocarbons wood coal fuel 5 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Substitution Addition polymerization Oxidation 6 / 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 7 / 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 6.25moles 25moles 12.5moles 8 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CHCl3 CCl4 CHI3 CHF3 9 / 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 10 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? hydrogen oxygen chlorine ammonia 11 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because the CO2 formed during the fermentation process has a sour taste it is commonly adulterated by the tappers and sellers the sugar content is converted into alcohol microbiological activity results in the production of organic acids within it. 12 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure protein starch cellulose animal fibre 13 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by evaporation, dissolution in water and filtration dissolution in water, filtration and evaporation dissolution in water, evaporation and filtration filtration, evaporation and dissolution in water 14 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? sodium chloride copper (ii)oxide magnessium ribon iodine crystals 15 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce methyl propanoate fats alkanols soap 16 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanols alkanes alkanoic acids amines 17 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? Na2S CH3CO2Na Na2SO4 NaHSO4 18 / 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 all the products have been formed the rate of forward and backward reactions are equal 19 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are SP hybridized Sp2 hybridised SP2d hybridized SP3 hybridised 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) 82 72 92 89 21 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? Cl2 I2 Br2 F2 22 / 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 23 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is ethane propane butane methane 24 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by gaining two proton sharing two electrons losing two electrons gaining two electrons 25 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NH3 CO2 H2S NO 26 / 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? 5.0 2.0 4.0 3.0 27 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces an aromatic hydrogenation cyclohexane margarine benzene 28 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table electronegativity atomic radius ionization energy electron affinity 29 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in Cl2O7 ZnCl2 NaClO KClO3 30 / 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 1.0atm 1.4atm 1.2atm 31 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? azimuthally magnetic Principal spin 32 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with sodium hydrogen sulphite Tollen’s reagent 2, 4 – dinitrophenylhydrazine hydrogen cyanide 33 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Carbon & Hydrogen Carbon & Sulphur Hydrogen & oxygen Carbon & Carbon 34 / 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 35 / 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 18.80dm3 6.00dm3 60.0dm3 36 / 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 Ag2S H2S 37 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an amorphorous oxide of a metal Oxide that behaves as a base as well as an acid Oxide that is insoluble in water amorphorous oxide of a non-metal 38 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is tin copper sodium calcium 39 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C3H8 C24H48 C15H32 C5H12 40 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 40g 20g 10g 4g 41 / 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 42 / 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 Brownian motion liquefaction Zig Zag Motion 43 / 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 R will form an electrovalent bond with S P will form an ionic bond with R 44 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO2 SO2 CO NO2 45 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 44% 55% 33% 87% 46 / 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 96 4.8g 3.2g 47 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is van der waals forces ionic coordinates covalent 48 / 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 49 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to quantum numbers of electrons reversibility of equilibrium reactions electronegativity values of elements collision theory of reactions rate 50 / 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 limestone sulphur Your score is 0% Restart quiz