CHEMISTRY POST UTME School Portal NG51 years agoPOST UTME/POST JAMB +1 146 ViewsCHEMISTRY POST UTME Practice the Chemistry Post UTME for Universities, Polytechnics and College of Education with our CBT software and pass your chemistry examination. 0% 7 CHEMISTRY POST UTME CHEMISTRY POST UTME CHEMISTRY POST UTMEPractice the Chemistry Post UTME for Universities, Polytechnicsand College of Education with our CBT software and pass your chemistry examination. 1 / 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 reactants have been used up all the products have been formed there is no further change in temperature 2 / 50 Category: CHEMISTRY POST UTME The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively; acetic acid and ethene ethanoic acid and ethene acetic acid and ethane methanoic acid and ethylene 3 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? magnetic spin azimuthally Principal 4 / 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) 3.2g 96 4.8g 6.4g 5 / 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 6 / 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 7 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce alkanols methyl propanoate soap fats 8 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CCl4 CHI3 CHCl3 CHF3 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 224cm3 168cm3 112cm3 100cm3 10 / 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 11 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of NO2 CO SO2 CO2 12 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IA group IIIA group IIA group VIIA 13 / 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 14 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? chlorine oxygen hydrogen ammonia 15 / 50 Category: CHEMISTRY POST UTME Palm wine turns sour with time because 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 microbiological activity results in the production of organic acids within it. 16 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 10g 20g 40g 4g 17 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by filtration, evaporation and dissolution in water dissolution in water, filtration and evaporation evaporation, dissolution in water and filtration dissolution in water, evaporation and filtration 18 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have a single bond a triple bond double bond an ionic bond 19 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except coating of steel to prevent rusting vulcanization of rubber manufacture of dyes manufacture of tetraoxosulphate (VI) acid 20 / 50 Category: CHEMISTRY POST UTME The following uses radioactive isotopes except for tracing reaction paths sterilization of medical equipment dating elements determining equilibrium positions 21 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of coal fuel chlorofluorocarbons wood 22 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure protein cellulose animal fibre starch 23 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces an aromatic hydrogenation benzene cyclohexane margarine 24 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are SP hybridized SP2d hybridized Sp2 hybridised SP3 hybridised 25 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? Na2S NaHSO4 CH3CO2Na Na2SO4 26 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess NO CO2 H2S NH3 27 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? Br2 Cl2 F2 I2 28 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an Oxide that is insoluble in water Oxide that behaves as a base as well as an acid amorphorous oxide of a non-metal amorphorous oxide of a metal 29 / 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 30 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess CO2 NO H2S NH3 31 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is methane butane propane ethane 32 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is ionic van der waals forces coordinates covalent 33 / 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 6.25moles 25moles 0.625moles 34 / 50 Category: CHEMISTRY POST UTME Which of the following is needed to produce a slag during the extraction of iron in the blast furnace? cryolite limestone carbon sulphur 35 / 50 Category: CHEMISTRY POST UTME Element P, Q, R and S have 6, 11, 15 and 16 electrons respectively, therefore, Q will form a covalent bond with S R will form an electrovalent bond with S P will form an ionic bond with R Q will form an electrovalent bond with S 36 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Hydrogen & oxygen Carbon & Sulphur Carbon & Hydrogen Carbon & Carbon 37 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by sharing two electrons gaining two electrons losing two electrons gaining two proton 38 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 44% 87% 33% 55% 39 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with sodium hydrogen sulphite Tollen’s reagent hydrogen cyanide 2, 4 – dinitrophenylhydrazine 40 / 50 Category: CHEMISTRY POST UTME An element X forms the following compounds with chlorine: XCl4, XCl3, XCl2. This illustrate the law of conservation of mass law of chemical proportions law of multiple proportions law of definite proportions 41 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Addition polymerization Oxidation Substitution 42 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is tin copper sodium 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 Zig Zag Motion liquefaction evaporation Brownian motion 44 / 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 18.80dm3 6.00dm3 60.0dm3 45 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C3H8 C5H12 C24H48 C15H32 46 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for amines alkanes alkanols alkanoic acids 47 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table ionization energy electronegativity atomic radius electron affinity 48 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in KClO3 ZnCl2 NaClO Cl2O7 49 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except manufacture of tetraoxosulphate (VI) acid vulcanization of rubber coating of steel to prevent rusting manufacture of dyes 50 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? copper (ii)oxide iodine crystals sodium chloride magnessium ribon Insert your name and email address to display your score.Thank you and goodluck Your score is LinkedIn Facebook Twitter 0% Restart quiz Send feedback School Portal NG +1
