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 Alkanals can be differentiated from alkanones by reaction with 2, 4 – dinitrophenylhydrazine sodium hydrogen sulphite Tollen’s reagent hydrogen cyanide 2 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanols alkanoic acids amines alkanes 3 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? azimuthally Principal spin magnetic 4 / 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 5 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? NaHSO4 Na2S Na2SO4 CH3CO2Na 6 / 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 Ag2S H2S 7 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to reversibility of equilibrium reactions quantum numbers of electrons electronegativity values of elements collision theory of reactions rate 8 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of coal wood fuel chlorofluorocarbons 9 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table electronegativity electron affinity atomic radius ionization energy 10 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 20g 40g 4g 10g 11 / 50 Category: CHEMISTRY POST UTME Equilibrium is sad to be attained in a reversible reaction when all the reactants have been used up the rate of forward and backward reactions are equal all the products have been formed there is no further change in temperature 12 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in Cl2O7 KClO3 ZnCl2 NaClO 13 / 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 14 / 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 112cm3 168cm3 15 / 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 16 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for sterilization of medical equipment determining equilibrium positions tracing reaction paths dating elements 17 / 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 82 89 72 18 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S CO2 NO NH3 19 / 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 0.8atm 1.0atm 1.2atm 20 / 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 21 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C3H8 C5H12 C24H48 C15H32 22 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is covalent van der waals forces coordinates ionic 23 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce fats soap alkanols methyl propanoate 24 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is butane propane ethane methane 25 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are SP3 hybridised SP2d hybridized SP hybridized Sp2 hybridised 26 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S NH3 NO CO2 27 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by sharing two electrons gaining two proton losing two electrons gaining two electrons 28 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? F2 I2 Cl2 Br2 29 / 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 5.0 2.0 3.0 30 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except manufacture of dyes coating of steel to prevent rusting vulcanization of rubber manufacture of tetraoxosulphate (VI) acid 31 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? polymerization Addition Substitution Oxidation 32 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an amorphorous oxide of a metal amorphorous oxide of a non-metal Oxide that is insoluble in water Oxide that behaves as a base as well as an acid 33 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except coating of steel to prevent rusting manufacture of tetraoxosulphate (VI) acid vulcanization of rubber manufacture of dyes 34 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? chlorine oxygen ammonia hydrogen 35 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; acetic acid and ethane ethanoic acid and ethene acetic acid and ethene methanoic acid and ethylene 36 / 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 conservation of mass law of definite proportions 37 / 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 12.5moles 6.25moles 25moles 38 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces cyclohexane benzene an aromatic hydrogenation margarine 39 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have an ionic bond a single bond double bond a triple bond 40 / 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) 96 3.2g 4.8g 6.4g 41 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 87% 55% 44% 33% 42 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is sodium copper tin calcium 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 evaporation liquefaction Zig Zag Motion 44 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure protein starch cellulose animal fibre 45 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because microbiological activity results in the production of organic acids within it. the sugar content is converted into alcohol it is commonly adulterated by the tappers and sellers the CO2 formed during the fermentation process has a sour taste 46 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CHF3 CCl4 CHI3 CHCl3 47 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO2 SO2 CO NO2 48 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Hydrogen & oxygen Carbon & Carbon Carbon & Sulphur Carbon & Hydrogen 49 / 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 P will form an ionic bond with R Q will form a covalent bond with S 50 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by filtration, evaporation and dissolution in water dissolution in water, evaporation and filtration dissolution in water, filtration and evaporation evaporation, dissolution in water and filtration Your score is 0% Restart quiz