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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Category: CHEMISTRY POST UTME

Lucas reagent is used to test for

amines

alkanoic acids

alkanols

alkanes

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Category: CHEMISTRY POST UTME

The oxidation number of chlorine is +1in

KClO3

ZnCl2

NaClO

Cl2O7

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Category: CHEMISTRY POST UTME

The following are uses of sulphur except

manufacture of tetraoxosulphate (VI) acid

coating of steel to prevent rusting

manufacture of dyes

vulcanization of rubber

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Category: CHEMISTRY POST UTME

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

C24H48

C15H32

C3H8

C5H12

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Category: CHEMISTRY POST UTME

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

NH3

NO

CO2

H2S

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Category: CHEMISTRY POST UTME

Which of the following is an acidic salt?

NaHSO4

CH3CO2Na

Na2SO4

Na2S

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Category: CHEMISTRY POST UTME

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

20g

40g

4g

10g

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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

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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

18.80dm3

6.00dm3

1.88dm3

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Category: CHEMISTRY POST UTME

The molecular formula of a common organic laboratory anesthetic is

CCl4

CHI3

CHF3

CHCl3

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Category: CHEMISTRY POST UTME

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

H2S

NH3

CO2

NO

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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

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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 metal

amorphorous oxide of a non-metal

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Category: CHEMISTRY POST UTME

The metal extracted from cassiterite is

calcium

copper

sodium

tin

15 / 50

Category: CHEMISTRY POST UTME

Which quantum number divides shells into orbitals?

Principal

spin

azimuthally

magnetic

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Category: CHEMISTRY POST UTME

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

hydrogen

oxygen

chlorine

ammonia

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Category: CHEMISTRY POST UTME

Catalytic hydrogenation of benzene produces

an aromatic hydrogenation

cyclohexane

benzene

margarine

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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?

25moles

6.25moles

12.5moles

0.625moles

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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

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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

21 / 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

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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

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Category: CHEMISTRY POST UTME

Alkanals can be differentiated from alkanones by reaction with

Tollen’s reagent

2, 4 – dinitrophenylhydrazine

hydrogen cyanide

sodium hydrogen sulphite

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Category: CHEMISTRY POST UTME

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

HNO3

PbS

Ag2S

H2S

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Category: CHEMISTRY POST UTME

The following are uses of sulphur except

manufacture of dyes

vulcanization of rubber

manufacture of tetraoxosulphate (VI) acid

coating of steel to prevent rusting

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Category: CHEMISTRY POST UTME

The carbon atoms on ethane are

SP hybridized

SP2d hybridized

Sp2 hybridised

SP3 hybridised

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Category: CHEMISTRY POST UTME

Pauli exclusion principle is related to

quantum numbers of electrons

collision theory of reactions rate

reversibility of equilibrium reactions

electronegativity values of elements

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Category: CHEMISTRY POST UTME

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

Carbon & Carbon

Hydrogen & oxygen

Carbon & Hydrogen

Carbon & Sulphur

29 / 50

Category: CHEMISTRY POST UTME

Cotton is almost pure

starch

protein

animal fibre

cellulose

30 / 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

sulphur

cryolite

carbon

31 / 50

Category: CHEMISTRY POST UTME

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

van der waals forces

ionic

covalent

coordinates

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Category: CHEMISTRY POST UTME

The following uses radioactive isotopes except for

dating elements

tracing reaction paths

sterilization of medical equipment

determining equilibrium positions

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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

3.2g

96

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Category: CHEMISTRY POST UTME

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

33%

44%

87%

55%

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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

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Category: CHEMISTRY POST UTME

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

Substitution

Oxidation

polymerization

Addition

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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

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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 definite proportions

law of conservation of mass

law of chemical proportions

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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)

92

89

82

72

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Category: CHEMISTRY POST UTME

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

SO2

CO2

NO2

CO

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Category: CHEMISTRY POST UTME

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

alkanols

fats

methyl propanoate

soap

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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

224cm3

100cm3

112cm3

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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.

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Category: CHEMISTRY POST UTME

Which of the following halogens is the most reactive?

F2

Br2

Cl2

I2

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Category: CHEMISTRY POST UTME

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

electronegativity

atomic radius

electron affinity

ionization energy

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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

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Category: CHEMISTRY POST UTME

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

chlorofluorocarbons

coal

wood

fuel

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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

5.0

4.0

2.0

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Category: CHEMISTRY POST UTME

The principal constituents of natural gas is

butane

ethane

propane

methane

50 / 50

Category: CHEMISTRY POST UTME

Calcium atom ionizes by

sharing two electrons

gaining two proton

losing two electrons

gaining two electrons

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CHEMISTRY POST UTME

CHEMISTRY POST UTME

CHEMISTRY POST UTME

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