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 weakest attractive force that can be observed between two molecules is van der waals forces coordinates ionic covalent 2 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NO CO2 NH3 H2S 3 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group VIIA group IA group IIA group IIIA 4 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to electronegativity values of elements collision theory of reactions rate quantum numbers of electrons reversibility of equilibrium reactions 5 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are SP3 hybridised SP2d hybridized Sp2 hybridised SP hybridized 6 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CHCl3 CHF3 CHI3 CCl4 7 / 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 5.0 4.0 3.0 8 / 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 100cm3 168cm3 224cm3 9 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Hydrogen & oxygen Carbon & Hydrogen Carbon & Carbon Carbon & Sulphur 10 / 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 limestone carbon 11 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is sodium tin copper calcium 12 / 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 1.2atm 0.8atm 1.0atm 13 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 10g 40g 20g 4g 14 / 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? 6.00dm3 18.80dm3 1.88dm3 60.0dm3 15 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with Tollen’s reagent 2, 4 – dinitrophenylhydrazine hydrogen cyanide sodium hydrogen sulphite 16 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; ethanoic acid and ethene acetic acid and ethene acetic acid and ethane methanoic acid and ethylene 17 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for amines alkanes alkanols alkanoic acids 18 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have a triple bond an ionic bond double bond a single bond 19 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 55% 33% 44% 87% 20 / 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 21 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces margarine cyclohexane benzene an aromatic hydrogenation 22 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by losing two electrons gaining two proton sharing two electrons gaining two electrons 23 / 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 P will form an ionic bond with R Q will form a covalent bond with S R will form an electrovalent bond with S 24 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an amorphorous oxide of a metal Oxide that is insoluble in water Oxide that behaves as a base as well as an acid amorphorous oxide of a non-metal 25 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO2 NO2 CO SO2 26 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? Principal spin magnetic azimuthally 27 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for determining equilibrium positions tracing reaction paths dating elements sterilization of medical equipment 28 / 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 H2S PbS 29 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except vulcanization of rubber manufacture of tetraoxosulphate (VI) acid coating of steel to prevent rusting manufacture of dyes 30 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce methyl propanoate alkanols soap fats 31 / 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 72 92 82 32 / 50 Category: CHEMISTRY POST UTME Equilibrium is sad to be attained in a reversible reaction when all the reactants have been used up there is no further change in temperature all the products have been formed the rate of forward and backward reactions are equal 33 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of coal fuel wood chlorofluorocarbons 34 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because microbiological activity results in the production of organic acids within it. it is commonly adulterated by the tappers and sellers the CO2 formed during the fermentation process has a sour taste the sugar content is converted into alcohol 35 / 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 36 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is ethane butane methane propane 37 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in KClO3 NaClO Cl2O7 ZnCl2 38 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? I2 Cl2 F2 Br2 39 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? NaHSO4 CH3CO2Na Na2SO4 Na2S 40 / 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 12.5moles 25moles 41 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table electronegativity ionization energy electron affinity atomic radius 42 / 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 43 / 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 liquefaction evaporation Zig Zag Motion 44 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure cellulose protein starch animal fibre 45 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? hydrogen chlorine ammonia oxygen 46 / 50 Category: CHEMISTRY POST UTME An element X forms the following compounds with chlorine: XCl4, XCl3, XCl2. This illustrate the law of definite proportions law of conservation of mass law of multiple proportions law of chemical proportions 47 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S NO CO2 NH3 48 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Oxidation Substitution Addition polymerization 49 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C24H48 C15H32 C5H12 C3H8 50 / 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 3.2g 96 4.8g Your score is 0% Restart quiz