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 principal constituents of natural gas is methane butane propane ethane 2 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with sodium hydrogen sulphite 2, 4 – dinitrophenylhydrazine hydrogen cyanide Tollen’s reagent 3 / 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 4 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? oxygen chlorine hydrogen ammonia 5 / 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 6 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by filtration, evaporation and dissolution in water evaporation, dissolution in water and filtration dissolution in water, evaporation and filtration dissolution in water, filtration and evaporation 7 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 20g 10g 40g 4g 8 / 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 3.0 2.0 9 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is van der waals forces covalent coordinates ionic 10 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; acetic acid and ethane methanoic acid and ethylene ethanoic acid and ethene acetic acid and ethene 11 / 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 1.0atm 0.8atm 1.2atm 12 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Carbon & Hydrogen Hydrogen & oxygen Carbon & Carbon Carbon & Sulphur 13 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of coal fuel wood chlorofluorocarbons 14 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by gaining two electrons sharing two electrons gaining two proton losing two electrons 15 / 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 6.25moles 0.625moles 16 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure starch protein animal fibre cellulose 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) 4.8g 3.2g 96 6.4g 18 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? magnessium ribon sodium chloride iodine crystals copper (ii)oxide 19 / 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 20 / 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 21 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO2 SO2 CO NO2 22 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? NaHSO4 CH3CO2Na Na2SO4 Na2S 23 / 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 24 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? magnetic Principal spin azimuthally 25 / 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 Zig Zag Motion liquefaction 26 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces benzene margarine cyclohexane an aromatic hydrogenation 27 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CHF3 CCl4 CHI3 CHCl3 28 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C24H48 C3H8 C15H32 C5H12 29 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S NH3 NO CO2 30 / 50 Category: CHEMISTRY POST UTME Element P, Q, R and S have 6, 11, 15 and 16 electrons respectively, therefore, P will form an ionic bond with R Q will form a covalent bond with S Q will form an electrovalent bond with S R will form an electrovalent bond with S 31 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanes alkanols alkanoic acids amines 32 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an amorphorous oxide of a metal Oxide that is insoluble in water amorphorous oxide of a non-metal Oxide that behaves as a base as well as an acid 33 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are Sp2 hybridised SP hybridized SP2d hybridized SP3 hybridised 34 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IIA group IIIA group VIIA group IA 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? 18.80dm3 1.88dm3 60.0dm3 6.00dm3 36 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? Br2 F2 Cl2 I2 37 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NO NH3 CO2 H2S 38 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have a triple bond a single bond an ionic bond double bond 39 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 87% 55% 44% 33% 40 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is copper sodium calcium tin 41 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in Cl2O7 NaClO KClO3 ZnCl2 42 / 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 chemical proportions law of multiple proportions law of conservation of mass 43 / 50 Category: CHEMISTRY POST UTME Equilibrium is sad to be attained in a reversible reaction when there is no further change in temperature the rate of forward and backward reactions are equal all the reactants have been used up all the products have been formed 44 / 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 168cm3 112cm3 224cm3 100cm3 45 / 50 Category: CHEMISTRY POST UTME When a solution of silver (I) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is H2S PbS Ag2S HNO3 46 / 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 sulphur cryolite carbon 47 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except manufacture of tetraoxosulphate (VI) acid coating of steel to prevent rusting vulcanization of rubber manufacture of dyes 48 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for dating elements determining equilibrium positions sterilization of medical equipment tracing reaction paths 49 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce soap fats methyl propanoate alkanols 50 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Oxidation Addition polymerization Substitution Your score is 0% Restart quiz