CHEMISTRY POST UTME

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

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.

1 / 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

2 / 50

Category: CHEMISTRY POST UTME

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

H2S

PbS

Ag2S

HNO3

3 / 50

Category: CHEMISTRY POST UTME

The molecular formula of a common organic laboratory anesthetic is

CCl4

CHCl3

CHF3

CHI3

4 / 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)

5 / 50

Category: CHEMISTRY POST UTME

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

acetic acid and ethane

methanoic acid and ethylene

acetic acid and ethene

ethanoic acid and ethene

6 / 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

100cm3

112cm3

168cm3

7 / 50

Category: CHEMISTRY POST UTME

The principal constituents of natural gas is

propane

butane

ethane

methane

8 / 50

Category: CHEMISTRY POST UTME

Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have

a triple bond

double bond

an ionic bond

a single bond

9 / 50

Category: CHEMISTRY POST UTME

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

87%

55%

33%

44%

10 / 50

Category: CHEMISTRY POST UTME

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

electron affinity

electronegativity

ionization energy

atomic radius

11 / 50

Category: CHEMISTRY POST UTME

Alkanals can be differentiated from alkanones by reaction with

hydrogen cyanide

2, 4 – dinitrophenylhydrazine

sodium hydrogen sulphite

Tollen’s reagent

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?

carbon

limestone

cryolite

sulphur

13 / 50

Category: CHEMISTRY POST UTME

Lucas reagent is used to test for

alkanoic acids

alkanols

amines

alkanes

14 / 50

Category: CHEMISTRY POST UTME

The oxidation number of chlorine is +1in

ZnCl2

Cl2O7

KClO3

NaClO

15 / 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 products have been formed

all the reactants have been used up

there is no further change in temperature

16 / 50

Category: CHEMISTRY POST UTME

The following are uses of sulphur except

coating of steel to prevent rusting

manufacture of dyes

manufacture of tetraoxosulphate (VI) acid

vulcanization of rubber

17 / 50

Category: CHEMISTRY POST UTME

Which of the following is an acidic salt?

Na2SO4

Na2S

CH3CO2Na

NaHSO4

18 / 50

Category: CHEMISTRY POST UTME

Pauli exclusion principle is related to

reversibility of equilibrium reactions

electronegativity values of elements

collision theory of reactions rate

quantum numbers of electrons

19 / 50

Category: CHEMISTRY POST UTME

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

soap

fats

methyl propanoate

alkanols

20 / 50

Category: CHEMISTRY POST UTME

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

Addition

Oxidation

polymerization

Substitution

21 / 50

Category: CHEMISTRY POST UTME

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

CO2

H2S

NH3

22 / 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

1.4atm

0.8atm

1.0atm

23 / 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

24 / 50

Category: CHEMISTRY POST UTME

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

CO2

H2S

NH3

25 / 50

Category: CHEMISTRY POST UTME

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

hydrogen

chlorine

oxygen

ammonia

26 / 50

Category: CHEMISTRY POST UTME

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

sodium chloride

copper (ii)oxide

iodine crystals

magnessium ribon

27 / 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

Brownian motion

liquefaction

evaporation

28 / 50

Category: CHEMISTRY POST UTME

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

Carbon & Sulphur

Hydrogen & oxygen

Carbon & Hydrogen

Carbon & Carbon

29 / 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

30 / 50

Category: CHEMISTRY POST UTME

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

group IA

group IIA

group VIIA

group IIIA

31 / 50

Category: CHEMISTRY POST UTME

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

coal

chlorofluorocarbons

wood

fuel

32 / 50

Category: CHEMISTRY POST UTME

Which quantum number divides shells into orbitals?

magnetic

Principal

azimuthally

spin

33 / 50

Category: CHEMISTRY POST UTME

Cotton is almost pure

starch

cellulose

protein

animal fibre

34 / 50

Category: CHEMISTRY POST UTME

Which of the following halogens is the most reactive?

Br2

Cl2

35 / 50

Category: CHEMISTRY POST UTME

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

C15H32

C24H48

C3H8

C5H12

36 / 50

Category: CHEMISTRY POST UTME

The following are uses of sulphur except

manufacture of dyes

manufacture of tetraoxosulphate (VI) acid

vulcanization of rubber

coating of steel to prevent rusting

37 / 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

5.0

2.0

38 / 50

Category: CHEMISTRY POST UTME

The carbon atoms on ethane are

SP hybridized

SP3 hybridised

SP2d hybridized

Sp2 hybridised

39 / 50

Category: CHEMISTRY POST UTME

Element P, Q, R and S have 6, 11, 15 and 16 electrons respectively, therefore,

Q will form an electrovalent bond with S

P will form an ionic bond with R

Q will form a covalent bond with S

R will form an electrovalent bond with S

40 / 50

Category: CHEMISTRY POST UTME

An amphoteric oxide is an

Oxide that behaves as a base as well as an acid

Oxide that is insoluble in water

amorphorous oxide of a metal

amorphorous oxide of a non-metal

41 / 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

42 / 50

Category: CHEMISTRY POST UTME

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

NO2

SO2

CO2

43 / 50

Category: CHEMISTRY POST UTME

Calcium atom ionizes by

losing two electrons

gaining two electrons

gaining two proton

sharing two electrons

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 sugar content is converted into alcohol

it is commonly adulterated by the tappers and sellers

the CO2 formed during the fermentation process has a sour taste

45 / 50

Category: CHEMISTRY POST UTME

The metal extracted from cassiterite is

sodium

copper

tin

calcium

46 / 50

Category: CHEMISTRY POST UTME

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

coordinates

covalent

ionic

van der waals forces

47 / 50

Category: CHEMISTRY POST UTME

Catalytic hydrogenation of benzene produces

benzene

an aromatic hydrogenation

margarine

cyclohexane

48 / 50

Category: CHEMISTRY POST UTME

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

40g

10g

20g

49 / 50

Category: CHEMISTRY POST UTME

The following uses radioactive isotopes except for

determining equilibrium positions

dating elements

sterilization of medical equipment

tracing reaction paths

50 / 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

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CHEMISTRY POST UTME

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