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 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 224cm3 112cm3 168cm3 2 / 50 Category: CHEMISTRY POST UTME Equilibrium is sad to be attained in a reversible reaction when the rate of forward and backward reactions are equal all the products have been formed there is no further change in temperature all the reactants have been used up 3 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are Sp2 hybridised SP2d hybridized SP3 hybridised SP hybridized 4 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have double bond a triple bond an ionic bond a single bond 5 / 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? 12.5moles 25moles 0.625moles 6.25moles 6 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanoic acids alkanols amines alkanes 7 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C5H12 C3H8 C15H32 C24H48 8 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because 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 microbiological activity results in the production of organic acids within it. 9 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Addition Oxidation Substitution polymerization 10 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table ionization energy electronegativity electron affinity atomic radius 11 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? oxygen chlorine hydrogen ammonia 12 / 50 Category: CHEMISTRY POST UTME When a solution of silver (I) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is HNO3 Ag2S PbS H2S 13 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; ethanoic acid and ethene methanoic acid and ethylene acetic acid and ethene acetic acid and ethane 14 / 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 cryolite carbon sulphur 15 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? Na2SO4 CH3CO2Na NaHSO4 Na2S 16 / 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 96 3.2g 6.4g 17 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 20g 40g 4g 10g 18 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by gaining two electrons sharing two electrons losing two electrons gaining two proton 19 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of SO2 NO2 CO2 CO 20 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except coating of steel to prevent rusting manufacture of dyes manufacture of tetraoxosulphate (VI) acid vulcanization of rubber 21 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NO H2S NH3 CO2 22 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is coordinates covalent ionic van der waals forces 23 / 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? 60.0dm3 1.88dm3 6.00dm3 18.80dm3 24 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 87% 55% 33% 44% 25 / 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 26 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? Cl2 F2 I2 Br2 27 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces cyclohexane benzene an aromatic hydrogenation margarine 28 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? sodium chloride magnessium ribon iodine crystals copper (ii)oxide 29 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Carbon & Carbon Carbon & Hydrogen Carbon & Sulphur Hydrogen & oxygen 30 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S CO2 NH3 NO 31 / 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 32 / 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 33 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by dissolution in water, filtration and evaporation dissolution in water, evaporation and filtration evaporation, dissolution in water and filtration filtration, evaporation and dissolution in water 34 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for tracing reaction paths sterilization of medical equipment dating elements determining equilibrium positions 35 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in ZnCl2 NaClO Cl2O7 KClO3 36 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CCl4 CHF3 CHCl3 CHI3 37 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is calcium tin sodium copper 38 / 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 39 / 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 amorphorous oxide of a non-metal Oxide that is insoluble in water 40 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure starch animal fibre cellulose protein 41 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with sodium hydrogen sulphite hydrogen cyanide Tollen’s reagent 2, 4 – dinitrophenylhydrazine 42 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? magnetic spin azimuthally Principal 43 / 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 44 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of wood coal chlorofluorocarbons fuel 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 1.0atm 1.4atm 0.8atm 1.2atm 46 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is ethane butane methane propane 47 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce alkanols soap methyl propanoate fats 48 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IIA group IA group IIIA group VIIA 49 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to reversibility of equilibrium reactions collision theory of reactions rate electronegativity values of elements quantum numbers of electrons 50 / 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 an electrovalent bond with S Q will form a covalent bond with S R will form an electrovalent bond with S Your score is 0% Restart quiz