Home — Chemistry — (APP) CHEMISTRY POST UTME PAST QUESTIONS(APP) CHEMISTRY POST UTME PAST QUESTIONSChemistry, Exams Past Questions (Senior Classes) School Portal NG Post Views: 3,218 CHEMISTRY POST UTME PAST QUESTIONS AND ANSWERS % CHEMISTRY POST UTME (APP) CHEMISTRY POST UTME CHEMISTRY POST UTMEPractice with our Post UTME CBT for Universities, Polytechnics, College of Agriculture, College ofMedicine, College of Technology and College of Education and pass your examination. 1 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? I2 Cl2 Br2 F2 2 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IIA group IIIA group IA group VIIA 3 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Addition Substitution Oxidation polymerization 4 / 50 Category: CHEMISTRY POST UTME An element X forms the following compounds with chlorine: XCl4, XCl3, XCl2. This illustrate the law of multiple proportions law of conservation of mass law of chemical proportions law of definite proportions 5 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? spin Principal azimuthally magnetic 6 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess CO2 NH3 H2S NO 7 / 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 8 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of coal chlorofluorocarbons wood fuel 9 / 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 10 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to electronegativity values of elements quantum numbers of electrons collision theory of reactions rate reversibility of equilibrium reactions 11 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in NaClO KClO3 ZnCl2 Cl2O7 12 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce soap alkanols fats methyl propanoate 13 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is tin calcium copper sodium 14 / 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 1.0atm 0.8atm 1.4atm 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? 6.00dm3 60.0dm3 1.88dm3 18.80dm3 16 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an Oxide that is insoluble in water amorphorous oxide of a metal amorphorous oxide of a non-metal Oxide that behaves as a base as well as an acid 17 / 50 Category: CHEMISTRY POST UTME Equilibrium is sad to be attained in a reversible reaction when there is no further change in temperature all the products have been formed the rate of forward and backward reactions are equal all the reactants have been used up 18 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CCl4 CHI3 CHCl3 CHF3 19 / 50 Category: CHEMISTRY POST UTME When a solution of silver (I) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is Ag2S H2S PbS HNO3 20 / 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 6.4g 3.2g 96 21 / 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 22 / 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 0.625moles 12.5moles 6.25moles 23 / 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 24 / 50 Category: CHEMISTRY POST UTME See also INTRODUCTION TO CHEMISTRY The weakest attractive force that can be observed between two molecules is ionic covalent coordinates van der waals forces 25 / 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 89 72 92 26 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is butane methane propane ethane 27 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for sterilization of medical equipment dating elements tracing reaction paths determining equilibrium positions 28 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 40g 4g 10g 20g 29 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have double bond a single bond an ionic bond a triple bond 30 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except manufacture of tetraoxosulphate (VI) acid coating of steel to prevent rusting manufacture of dyes vulcanization of rubber 31 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure cellulose starch protein animal fibre 32 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NH3 NO CO2 H2S 33 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? CH3CO2Na NaHSO4 Na2SO4 Na2S 34 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with 2, 4 – dinitrophenylhydrazine Tollen’s reagent sodium hydrogen sulphite hydrogen cyanide 35 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? iodine crystals copper (ii)oxide sodium chloride magnessium ribon 36 / 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 Zig Zag Motion evaporation liquefaction Brownian motion 37 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces margarine cyclohexane benzene an aromatic hydrogenation 38 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO CO2 SO2 NO2 39 / 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 40 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by gaining two electrons gaining two proton sharing two electrons losing two electrons 41 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table ionization energy electron affinity atomic radius electronegativity 42 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except coating of steel to prevent rusting manufacture of tetraoxosulphate (VI) acid manufacture of dyes vulcanization of rubber 43 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanes alkanoic acids alkanols amines 44 / 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 microbiological activity results in the production of organic acids within it. the CO2 formed during the fermentation process has a sour taste 45 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are SP3 hybridised SP2d hybridized Sp2 hybridised SP hybridized 46 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C5H12 C24H48 C15H32 C3H8 47 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? oxygen chlorine hydrogen ammonia 48 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 55% 87% 33% 44% 49 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Carbon & Hydrogen Carbon & Carbon Hydrogen & oxygen Carbon & Sulphur 50 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; ethanoic acid and ethene acetic acid and ethene acetic acid and ethane methanoic acid and ethylene Your score is 0% Restart quiz Tags:ChemistryChemistry POST UTME
