0% 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 The following uses radioactive isotopes except for dating elements tracing reaction paths sterilization of medical equipment determining equilibrium positions 2 / 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 1.2atm 1.4atm 0.8atm 3 / 50 Category: CHEMISTRY POST UTME The oxidation number of chlorine is +1in NaClO Cl2O7 ZnCl2 KClO3 4 / 50 Category: CHEMISTRY POST UTME Organic Chemistry is the branch of Chemistry that deals with ------- and ------ Hydrogen & oxygen Carbon & Sulphur Carbon & Hydrogen Carbon & Carbon 5 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S NH3 NO CO2 6 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except manufacture of dyes manufacture of tetraoxosulphate (VI) acid coating of steel to prevent rusting vulcanization of rubber 7 / 50 Category: CHEMISTRY POST UTME Which of the following is not a member of the homologous series of the paraffins? C3H8 C24H48 C15H32 C5H12 8 / 50 Category: CHEMISTRY POST UTME Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce alkanols fats methyl propanoate soap 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 conservation of mass law of chemical proportions law of multiple proportions 10 / 50 Category: CHEMISTRY POST UTME Which of the following substances increases in mass when heated in air? iodine crystals copper (ii)oxide magnessium ribon sodium chloride 11 / 50 Category: CHEMISTRY POST UTME Alkanals can be differentiated from alkanones by reaction with Tollen’s reagent 2, 4 – dinitrophenylhydrazine sodium hydrogen sulphite hydrogen cyanide 12 / 50 Category: CHEMISTRY POST UTME When a solution of silver (I) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is Ag2S PbS HNO3 H2S 13 / 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 100cm3 224cm3 14 / 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 Q will form an electrovalent bond with S P will form an ionic bond with R 15 / 50 Category: CHEMISTRY POST UTME The following are uses of sulphur except coating of steel to prevent rusting manufacture of tetraoxosulphate (VI) acid vulcanization of rubber manufacture of dyes 16 / 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 17 / 50 Category: CHEMISTRY POST UTME Lucas reagent is used to test for alkanes alkanoic acids alkanols amines 18 / 50 Category: CHEMISTRY POST UTME Which of the following types of reactions takes place between C2H4 and the halogens? Substitution Addition polymerization Oxidation 19 / 50 Category: CHEMISTRY POST UTME The principal constituents of natural gas is butane ethane propane methane 20 / 50 Category: CHEMISTRY POST UTME Pauli exclusion principle is related to collision theory of reactions rate quantum numbers of electrons reversibility of equilibrium reactions electronegativity values of elements 21 / 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 18.80dm3 6.00dm3 22 / 50 Category: CHEMISTRY POST UTME The molecular formula of a common organic laboratory anesthetic is CHI3 CHCl3 CCl4 CHF3 23 / 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 methanoic acid and ethylene acetic acid and ethane 24 / 50 Category: CHEMISTRY POST UTME The percentage of water of crystallization in ZnSO4. 7H2O is 55% 33% 44% 87% 25 / 50 Category: CHEMISTRY POST UTME Which of the following properties increases down a group in the Periodic Table ionization energy atomic radius electron affinity electronegativity 26 / 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 27 / 50 Category: CHEMISTRY POST UTME The carbon atoms on ethane are Sp2 hybridised SP hybridized SP3 hybridised SP2d hybridized 28 / 50 Category: CHEMISTRY POST UTME A mixture of sugar and sulphur can be separated by dissolution in water, evaporation and filtration evaporation, dissolution in water and filtration dissolution in water, filtration and evaporation filtration, evaporation and dissolution in water 29 / 50 Category: CHEMISTRY POST UTME Which quantum number divides shells into orbitals? azimuthally Principal spin magnetic 30 / 50 Category: CHEMISTRY POST UTME Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have an ionic bond double bond a single bond a triple bond 31 / 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 reactants have been used up the rate of forward and backward reactions are equal all the products have been formed 32 / 50 Category: CHEMISTRY POST UTME Which of the following gases can be collected by the method of downward delivery? hydrogen oxygen ammonia chlorine 33 / 50 Category: CHEMISTRY POST UTME Cotton is almost pure cellulose animal fibre starch protein 34 / 50 Category: CHEMISTRY POST UTME The major source of oxides of nitrogen is from the burning of fuel coal chlorofluorocarbons wood 35 / 50 Category: CHEMISTRY POST UTME Which of the following is an acidic salt? CH3CO2Na Na2S Na2SO4 NaHSO4 36 / 50 Category: CHEMISTRY POST UTME An amphoteric oxide is an Oxide that is insoluble in water amorphorous oxide of a metal Oxide that behaves as a base as well as an acid amorphorous oxide of a non-metal 37 / 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 4.8g 6.4g 96 38 / 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 39 / 50 Category: CHEMISTRY POST UTME Which of the following halogens is the most reactive? Cl2 I2 F2 Br2 40 / 50 Category: CHEMISTRY POST UTME In the Periodic Table, the elements that lose electrons most readily belong to group IIIA group IA group IIA group VIIA 41 / 50 Category: CHEMISTRY POST UTME The greenhouse effect is a climatic condition associated with the presence of excess H2S NO CO2 NH3 42 / 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 72 92 89 43 / 50 Category: CHEMISTRY POST UTME What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution? 40g 4g 20g 10g 44 / 50 Category: CHEMISTRY POST UTME Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of CO CO2 SO2 NO2 45 / 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? 0.625moles 12.5moles 6.25moles 25moles 46 / 50 Category: CHEMISTRY POST UTME The metal extracted from cassiterite is calcium tin copper sodium 47 / 50 Category: CHEMISTRY POST UTME Calcium atom ionizes by gaining two electrons losing two electrons gaining two proton sharing two electrons 48 / 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. 49 / 50 Category: CHEMISTRY POST UTME Catalytic hydrogenation of benzene produces cyclohexane margarine benzene an aromatic hydrogenation 50 / 50 Category: CHEMISTRY POST UTME The weakest attractive force that can be observed between two molecules is coordinates ionic covalent van der waals forces Your score is 0% Restart quiz
CHEMISTRY POST UTME
(APP) CHEMISTRY POST UTME
Practice 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
The following uses radioactive isotopes except for
2 / 50
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
3 / 50
The oxidation number of chlorine is +1in
4 / 50
Organic Chemistry is the branch of Chemistry that deals with ------- and ------
5 / 50
The greenhouse effect is a climatic condition associated with the presence of excess
6 / 50
The following are uses of sulphur except
7 / 50
Which of the following is not a member of the homologous series of the paraffins?
8 / 50
Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce
9 / 50
An element X forms the following compounds with chlorine: XCl4, XCl3, XCl2. This illustrate the
10 / 50
Which of the following substances increases in mass when heated in air?
11 / 50
Alkanals can be differentiated from alkanones by reaction with
12 / 50
When a solution of silver (I) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is
13 / 50
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
14 / 50
Element P, Q, R and S have 6, 11, 15 and 16 electrons respectively, therefore,
15 / 50
16 / 50
The movement of liquid molecules from the surface of the liquid to the gaseous phase above it is known as
17 / 50
Lucas reagent is used to test for
18 / 50
Which of the following types of reactions takes place between C2H4 and the halogens?
19 / 50
The principal constituents of natural gas is
20 / 50
Pauli exclusion principle is related to
21 / 50
At 25oC and 1atm, a gas occupies a volume of 1.50dm3. What volume will it occupy at 100 oC and 1atm?
22 / 50
The molecular formula of a common organic laboratory anesthetic is
23 / 50
The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively;
24 / 50
The percentage of water of crystallization in ZnSO4. 7H2O is
25 / 50
Which of the following properties increases down a group in the Periodic Table
26 / 50
Which of the following is needed to produce a slag during the extraction of iron in the blast furnace?
27 / 50
The carbon atoms on ethane are
28 / 50
A mixture of sugar and sulphur can be separated by
29 / 50
Which quantum number divides shells into orbitals?
30 / 50
Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have
31 / 50
Equilibrium is sad to be attained in a reversible reaction when
32 / 50
Which of the following gases can be collected by the method of downward delivery?
33 / 50
Cotton is almost pure
34 / 50
The major source of oxides of nitrogen is from the burning of
35 / 50
Which of the following is an acidic salt?
36 / 50
An amphoteric oxide is an
37 / 50
A current of 4.0 amperes was passed through copper (II) tetraoxosulphate (IV)Â Â Â Â Â Â solution for one hour using copper electrodes. What was the mass of copper deposited? (Cu =64, IF = 96500C)
38 / 50
0.499g of CuSO4.XH2O when heated to constant weight gave a residue of 0.346g. What is the value of X?
39 / 50
Which of the following halogens is the most reactive?
40 / 50
In the Periodic Table, the elements that lose electrons most readily belong to
41 / 50
42 / 50
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)
43 / 50
What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution?
44 / 50
Copper metal dissolves in concentrated trioxonitrate (v)Â acid with the resultant evolution of
45 / 50
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?
46 / 50
The metal extracted from cassiterite is
47 / 50
Calcium atom ionizes by
48 / 50
Palm wine turns sour with time because
49 / 50
Catalytic hydrogenation of benzene produces
50 / 50
The weakest attractive force that can be observed between two molecules is
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