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 Which of the following properties increases down a group in the Periodic Table atomic radius electronegativity electron affinity ionization energy 2 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for sterilization of medical equipment tracing reaction paths dating elements determining equilibrium positions 3 / 50 Category: CHEMISTRY POST UTME Equilibrium is sad to be attained in a reversible reaction when all the reactants have been used up all the products have been formed there is no further change in temperature the rate of forward and backward reactions are equal 4 / 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 5 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? Br2 F2 Cl2 I2 6 / 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 7 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is ethane propane butane methane 8 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce alkanols fats soap methyl propanoate 9 / 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 conservation of mass law of multiple proportions 10 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Oxidation Addition Substitution polymerization 11 / 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, filtration and evaporation dissolution in water, evaporation and filtration 12 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces benzene an aromatic hydrogenation cyclohexane margarine 13 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess CO2 H2S NH3 NO 14 / 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 15 / 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 16 / 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 17 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO NO2 CO2 SO2 18 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with hydrogen cyanide sodium hydrogen sulphite 2, 4 – dinitrophenylhydrazine Tollen’s reagent 19 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NH3 H2S NO CO2 20 / 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? 6.25moles 0.625moles 25moles 12.5moles 21 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? copper (ii)oxide iodine crystals magnessium ribon sodium chloride 22 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by gaining two electrons sharing two electrons losing two electrons gaining two proton 23 / 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 24 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 87% 33% 55% 44% 25 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C5H12 C15H32 C3H8 C24H48 26 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have an ionic bond a triple bond double bond a single bond 27 / 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 28 / 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 168cm3 112cm3 100cm3 29 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an amorphorous oxide of a non-metal amorphorous oxide of a metal Oxide that is insoluble in water Oxide that behaves as a base as well as an acid 30 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because the CO2 formed during the fermentation process has a sour taste 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 31 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 10g 20g 4g 40g 32 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except manufacture of tetraoxosulphate (VI) acid manufacture of dyes coating of steel to prevent rusting vulcanization of rubber 33 / 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 1.2atm 0.8atm 34 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; methanoic acid and ethylene ethanoic acid and ethene acetic acid and ethene acetic acid and ethane 35 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? magnetic Principal spin azimuthally 36 / 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 37 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CCl4 CHI3 CHCl3 CHF3 38 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is tin copper calcium sodium 39 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? CH3CO2Na Na2SO4 Na2S NaHSO4 40 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure starch cellulose protein animal fibre 41 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are Sp2 hybridised SP hybridized SP3 hybridised SP2d hybridized 42 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Hydrogen & oxygen Carbon & Hydrogen Carbon & Sulphur Carbon & Carbon 43 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IIA group IA group VIIA group IIIA 44 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? chlorine hydrogen oxygen ammonia 45 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanols alkanes amines alkanoic acids 46 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of coal fuel chlorofluorocarbons wood 47 / 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 sulphur carbon 48 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is ionic covalent coordinates van der waals forces 49 / 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) 82 92 72 89 50 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in ZnCl2 KClO3 NaClO Cl2O7 Your score is 0% Restart quiz