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 An element X forms the following compounds with chlorine: XCl4, XCl3, XCl2. This illustrate the law of chemical proportions law of multiple proportions law of definite proportions law of conservation of mass 2 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because it is commonly adulterated by the tappers and sellers 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. 3 / 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) 92 89 72 82 4 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NO CO2 NH3 H2S 5 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with hydrogen cyanide Tollen’s reagent sodium hydrogen sulphite 2, 4 – dinitrophenylhydrazine 6 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in KClO3 ZnCl2 Cl2O7 NaClO 7 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Hydrogen & oxygen Carbon & Carbon Carbon & Sulphur Carbon & Hydrogen 8 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? Principal azimuthally spin magnetic 9 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess CO2 NH3 NO H2S 10 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanols alkanes alkanoic acids amines 11 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? chlorine ammonia hydrogen oxygen 12 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces an aromatic hydrogenation benzene cyclohexane margarine 13 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? I2 F2 Cl2 Br2 14 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table atomic radius electron affinity electronegativity ionization energy 15 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are SP3 hybridised SP2d hybridized SP hybridized Sp2 hybridised 16 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have a single bond a triple bond an ionic bond double bond 17 / 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 4.8g 96 18 / 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 12.5moles 0.625moles 6.25moles 19 / 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? 3.0 4.0 2.0 5.0 20 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; methanoic acid and ethylene acetic acid and ethene acetic acid and ethane ethanoic acid and ethene 21 / 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 22 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is butane propane ethane methane 23 / 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 sulphur limestone cryolite 24 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? iodine crystals sodium chloride copper (ii)oxide magnessium ribon 25 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CCl4 CHCl3 CHI3 CHF3 26 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by gaining two electrons losing two electrons sharing two electrons gaining two proton 27 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? NaHSO4 Na2S Na2SO4 CH3CO2Na 28 / 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 29 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of fuel coal chlorofluorocarbons wood 30 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is van der waals forces ionic coordinates covalent 31 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to quantum numbers of electrons collision theory of reactions rate reversibility of equilibrium reactions electronegativity values of elements 32 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 4g 40g 10g 20g 33 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by evaporation, dissolution in water and filtration dissolution in water, evaporation and filtration filtration, evaporation and dissolution in water dissolution in water, filtration and evaporation 34 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except manufacture of dyes manufacture of tetraoxosulphate (VI) acid vulcanization of rubber coating of steel to prevent rusting 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 6.00dm3 60.0dm3 18.80dm3 36 / 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 the rate of forward and backward reactions are equal all the products have been formed 37 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is calcium tin copper sodium 38 / 50 Category: CHEMISTRY POST UTME Element P, Q, R and S have 6, 11, 15 and 16 electrons respectively, therefore, R will form an electrovalent bond with S Q will form an electrovalent bond with S Q will form a covalent bond with S P will form an ionic bond with R 39 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce fats soap methyl propanoate alkanols 40 / 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 100cm3 168cm3 112cm3 41 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Addition polymerization Oxidation Substitution 42 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of SO2 NO2 CO2 CO 43 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure animal fibre protein starch cellulose 44 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IA group VIIA group IIIA group IIA 45 / 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 1.0atm 1.4atm 46 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 87% 33% 55% 44% 47 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for dating elements sterilization of medical equipment tracing reaction paths determining equilibrium positions 48 / 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 Zig Zag Motion evaporation Brownian motion 49 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C5H12 C24H48 C15H32 C3H8 50 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except vulcanization of rubber manufacture of dyes manufacture of tetraoxosulphate (VI) acid coating of steel to prevent rusting Your score is 0% Restart quiz