CHEMISTRY POST UTME (PRO)

CHEMISTRY POST UTME

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CHEMISTRY POST UTME

(PRO) CHEMISTRY POST UTME

CHEMISTRY POST UTME
Practice the Chemistry Post UTME for Universities, Polytechnics
and College of Education with our CBT software and pass your chemistry examination.
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1 / 50

Category: CHEMISTRY POST UTME

Organic Chemistry is the branch of Chemistry that deals with ------- and ------

Carbon & Sulphur

Hydrogen & oxygen

Carbon & Carbon

Carbon & Hydrogen

2 / 50

Category: CHEMISTRY POST UTME

Which of the following types of reactions takes place between C2H4 and the halogens?

Oxidation

Substitution

Addition

polymerization

3 / 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

4 / 50

Category: CHEMISTRY POST UTME

Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of

SO2

CO

CO2

NO2

5 / 50

Category: CHEMISTRY POST UTME

Calcium atom ionizes by

sharing two electrons

losing two electrons

gaining two proton

gaining two electrons

6 / 50

Category: CHEMISTRY POST UTME

The carbon atoms on ethane are

SP3 hybridised

Sp2 hybridised

SP2d hybridized

SP hybridized

7 / 50

Category: CHEMISTRY POST UTME

The following are uses of sulphur except

vulcanization of rubber

manufacture of tetraoxosulphate (VI) acid

manufacture of dyes

coating of steel to prevent rusting

8 / 50

Category: CHEMISTRY POST UTME

The greenhouse effect is a climatic condition associated with the presence of excess

H2S

NH3

CO2

NO

9 / 50

Category: CHEMISTRY POST UTME

Which of the following properties increases down a group in the Periodic Table

electron affinity

atomic radius

electronegativity

ionization energy

10 / 50

Category: CHEMISTRY POST UTME

Which of the following substances increases in mass when heated in air?

copper (ii)oxide

sodium chloride

iodine crystals

magnessium ribon

11 / 50

Category: CHEMISTRY POST UTME

A mixture of sugar and sulphur can be separated by

dissolution in water, filtration and evaporation

filtration, evaporation and dissolution in water

evaporation, dissolution in water and filtration

dissolution in water, evaporation and filtration

12 / 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

sulphur

limestone

carbon

13 / 50

Category: CHEMISTRY POST UTME

Pauli exclusion principle is related to

electronegativity values of elements

reversibility of equilibrium reactions

collision theory of reactions rate

quantum numbers of electrons

14 / 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

92

72

82

15 / 50

Category: CHEMISTRY POST UTME

The metal extracted from cassiterite is

copper

tin

sodium

calcium

16 / 50

Category: CHEMISTRY POST UTME

What weight of sodium hydroxide is required to make 500cm3 of 0.2M solution?

20g

10g

40g

4g

17 / 50

Category: CHEMISTRY POST UTME

The following are uses of sulphur except

manufacture of dyes

vulcanization of rubber

coating of steel to prevent rusting

manufacture of tetraoxosulphate (VI) acid

18 / 50

Category: CHEMISTRY POST UTME

The percentage of water of crystallization in ZnSO4. 7H2O is

33%

87%

55%

44%

19 / 50

Category: CHEMISTRY POST UTME

When a solution of silver (I) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is

HNO3

PbS

H2S

Ag2S

20 / 50

Category: CHEMISTRY POST UTME

Which quantum number divides shells into orbitals?

spin

magnetic

Principal

azimuthally

21 / 50

Category: CHEMISTRY POST UTME

Which of the following is an acidic salt?

NaHSO4

Na2S

Na2SO4

CH3CO2Na

22 / 50

Category: CHEMISTRY POST UTME

Esterification of propane 1, 2, 3-triol and unsaturated higher carboxylic acids will produce

alkanols

fats

soap

methyl propanoate

23 / 50

Category: CHEMISTRY POST UTME

In the Periodic Table, the elements that lose electrons most readily belong to

group IIIA

group VIIA

group IA

group IIA

24 / 50

Category: CHEMISTRY POST UTME

The greenhouse effect is a climatic condition associated with the presence of excess

NH3

CO2

H2S

NO

25 / 50

Category: CHEMISTRY POST UTME

Which of the following gases can be collected by the method of downward delivery?

ammonia

chlorine

hydrogen

oxygen

26 / 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

Oxide that is insoluble in water

amorphorous oxide of a non-metal

27 / 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

28 / 50

Category: CHEMISTRY POST UTME

Equilibrium is sad to be attained in a reversible reaction when

all the products have been formed

there is no further change in temperature

the rate of forward and backward reactions are equal

all the reactants have been used up

29 / 50

Category: CHEMISTRY POST UTME

Which of the following halogens is the most reactive?

I2

Cl2

Br2

F2

30 / 50

Category: CHEMISTRY POST UTME

The major source of oxides of nitrogen is from the burning of

fuel

wood

coal

chlorofluorocarbons

31 / 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

6.4g

4.8g

96

32 / 50

Category: CHEMISTRY POST UTME

The following uses radioactive isotopes except for

tracing reaction paths

determining equilibrium positions

sterilization of medical equipment

dating elements

33 / 50

Category: CHEMISTRY POST UTME

Which of the following is not a member of the homologous series of the paraffins?

C5H12

C3H8

C24H48

C15H32

34 / 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 definite proportions

law of conservation of mass

35 / 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

liquefaction

evaporation

Zig Zag Motion

Brownian motion

36 / 50

Category: CHEMISTRY POST UTME

Alkanals can be differentiated from alkanones by reaction with

sodium hydrogen sulphite

2, 4 – dinitrophenylhydrazine

Tollen’s reagent

hydrogen cyanide

37 / 50

Category: CHEMISTRY POST UTME

The IUPAC names for the compounds CH3COOH and CH2 = CH2 are respectively;

acetic acid and ethene

methanoic acid and ethylene

ethanoic acid and ethene

acetic acid and ethane

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?

4.0

3.0

2.0

5.0

39 / 50

Category: CHEMISTRY POST UTME

The molecular formula of a common organic laboratory anesthetic is

CHF3

CHCl3

CHI3

CCl4

40 / 50

Category: CHEMISTRY POST UTME

The oxidation number of chlorine is +1in

KClO3

ZnCl2

NaClO

Cl2O7

41 / 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?

18.80dm3

6.00dm3

1.88dm3

60.0dm3

42 / 50

Category: CHEMISTRY POST UTME

The weakest attractive force that can be observed between two molecules is

ionic

covalent

van der waals forces

coordinates

43 / 50

Category: CHEMISTRY POST UTME

The principal constituents of natural gas is

methane

butane

ethane

propane

44 / 50

Category: CHEMISTRY POST UTME

Palm wine turns sour with time because

microbiological activity results in the production of organic acids within it.

the CO2 formed during the fermentation process has a sour taste

the sugar content is converted into alcohol

it is commonly adulterated by the tappers and sellers

45 / 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

P will form an ionic bond with R

R will form an electrovalent bond with S

Q will form an electrovalent bond with S

46 / 50

Category: CHEMISTRY POST UTME

Cotton is almost pure

cellulose

starch

animal fibre

protein

47 / 50

Category: CHEMISTRY POST UTME

Catalytic hydrogenation of benzene produces

cyclohexane

an aromatic hydrogenation

margarine

benzene

48 / 50

Category: CHEMISTRY POST UTME

Lucas reagent is used to test for

alkanes

alkanoic acids

amines

alkanols

49 / 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

100cm3

224cm3

112cm3

50 / 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

1.4atm

0.8atm

1.0atm

1.2atm

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