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

Catalytic hydrogenation of benzene produces

benzene

cyclohexane

an aromatic hydrogenation

margarine

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

HNO3

Ag2S

3 / 50

Category: CHEMISTRY POST UTME

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

NO2

CO

SO2

CO2

4 / 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

5 / 50

Category: CHEMISTRY POST UTME

Cotton is almost pure

cellulose

starch

protein

animal fibre

6 / 50

Category: CHEMISTRY POST UTME

Palm wine turns sour with time because

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

it is commonly adulterated by the tappers and sellers

the sugar content is converted into alcohol

the CO2 formed during the fermentation process has a sour taste

7 / 50

Category: CHEMISTRY POST UTME

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

Addition

polymerization

Oxidation

Substitution

8 / 50

Category: CHEMISTRY POST UTME

The following uses radioactive isotopes except for

sterilization of medical equipment

determining equilibrium positions

tracing reaction paths

dating elements

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

100cm3

168cm3

112cm3

10 / 50

Category: CHEMISTRY POST UTME

The oxidation number of chlorine is +1in

KClO3

NaClO

ZnCl2

Cl2O7

11 / 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

60.0dm3

1.88dm3

12 / 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

13 / 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

3.0

5.0

4.0

14 / 50

Category: CHEMISTRY POST UTME

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

ammonia

hydrogen

oxygen

chlorine

15 / 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

carbon

sulphur

16 / 50

Category: CHEMISTRY POST UTME

An amphoteric oxide is an

amorphorous oxide of a metal

Oxide that is insoluble in water

amorphorous oxide of a non-metal

Oxide that behaves as a base as well as an acid

17 / 50

Category: CHEMISTRY POST UTME

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

Carbon & Carbon

Hydrogen & oxygen

Carbon & Hydrogen

Carbon & Sulphur

18 / 50

Category: CHEMISTRY POST UTME

Pauli exclusion principle is related to

electronegativity values of elements

quantum numbers of electrons

reversibility of equilibrium reactions

collision theory of reactions rate

19 / 50

Category: CHEMISTRY POST UTME

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

acetic acid and ethane

ethanoic acid and ethene

acetic acid and ethene

methanoic acid and ethylene

20 / 50

Category: CHEMISTRY POST UTME

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

4g

20g

40g

10g

21 / 50

Category: CHEMISTRY POST UTME

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

NO

NH3

CO2

H2S

22 / 50

Category: CHEMISTRY POST UTME

The metal extracted from cassiterite is

tin

sodium

calcium

copper

23 / 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

1.4atm

0.8atm

24 / 50

Category: CHEMISTRY POST UTME

Lucas reagent is used to test for

alkanes

alkanoic acids

amines

alkanols

25 / 50

Category: CHEMISTRY POST UTME

The following are uses of sulphur except

coating of steel to prevent rusting

manufacture of dyes

vulcanization of rubber

manufacture of tetraoxosulphate (VI) acid

26 / 50

Category: CHEMISTRY POST UTME

The carbon atoms on ethane are

Sp2 hybridised

SP2d hybridized

SP3 hybridised

SP hybridized

27 / 50

Category: CHEMISTRY POST UTME

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

CO2

NH3

H2S

NO

28 / 50

Category: CHEMISTRY POST UTME

The molecular formula of a common organic laboratory anesthetic is

CCl4

CHCl3

CHF3

CHI3

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?

12.5moles

0.625moles

6.25moles

25moles

30 / 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)

6.4g

4.8g

96

3.2g

31 / 50

Category: CHEMISTRY POST UTME

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

group IIIA

group IIA

group VIIA

group IA

32 / 50

Category: CHEMISTRY POST UTME

Calcium atom ionizes by

gaining two electrons

gaining two proton

sharing two electrons

losing two electrons

33 / 50

Category: CHEMISTRY POST UTME

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

fuel

coal

chlorofluorocarbons

wood

34 / 50

Category: CHEMISTRY POST UTME

Alkanals can be differentiated from alkanones by reaction with

2, 4 – dinitrophenylhydrazine

Tollen’s reagent

hydrogen cyanide

sodium hydrogen sulphite

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

Zig Zag Motion

evaporation

Brownian motion

liquefaction

36 / 50

Category: CHEMISTRY POST UTME

The principal constituents of natural gas is

ethane

propane

butane

methane

37 / 50

Category: CHEMISTRY POST UTME

Which of the following is an acidic salt?

Na2S

CH3CO2Na

Na2SO4

NaHSO4

38 / 50

Category: CHEMISTRY POST UTME

Equilibrium is sad to be attained in a reversible reaction when

all the reactants have been used up

the rate of forward and backward reactions are equal

all the products have been formed

there is no further change in temperature

39 / 50

Category: CHEMISTRY POST UTME

Which quantum number divides shells into orbitals?

spin

magnetic

Principal

azimuthally

40 / 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

41 / 50

Category: CHEMISTRY POST UTME

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

ionization energy

electronegativity

electron affinity

atomic radius

42 / 50

Category: CHEMISTRY POST UTME

A mixture of sugar and sulphur can be separated by

evaporation, dissolution in water and filtration

dissolution in water, evaporation and filtration

filtration, evaporation and dissolution in water

dissolution in water, filtration and evaporation

43 / 50

Category: CHEMISTRY POST UTME

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

a single bond

double bond

a triple bond

an ionic bond

44 / 50

Category: CHEMISTRY POST UTME

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

coordinates

van der waals forces

ionic

covalent

45 / 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 chemical proportions

law of conservation of mass

law of definite proportions

46 / 50

Category: CHEMISTRY POST UTME

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

C3H8

C24H48

C15H32

C5H12

47 / 50

Category: CHEMISTRY POST UTME

Which of the following halogens is the most reactive?

Cl2

Br2

F2

I2

48 / 50

Category: CHEMISTRY POST UTME

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

33%

44%

87%

55%

49 / 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

50 / 50

Category: CHEMISTRY POST UTME

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

soap

fats

methyl propanoate

alkanols

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