2018 OOU Chemistry Post-UTME

Organic Chemistry is the branch of Chemistry that deals with _________ and __________

The movement of liquid molecules from the surface of the liquid to the gaseous phase above it is known as

Which of the following is an acidic salt?

Given that the molecular mass of iron is 56 and that of oxygen is 16, how many mole of iron (III) oxide will be contained in 1kg of the compound?

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)

0.499g of CuSO₄XH₂O when heated to constant weight gave a residue of 0.346g.

What is the value of X?

The principal constituents of natural gas is

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

A mixture of sugar and sulphur can be separated by

The percentage of water of crystallization in ZnSO₄ 7H₂O is

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

0.0075mole of calcium trioxocarbonate(iv) is added to 0.015mole of a solution of HCl. The volume of gas evolved at S.T.P is

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

Which quantum number divides shells into orbitals?

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

Cotton is almost pure

Lucas reagent is used to test for

An element X forms the following compounds with chlorine: XCl₄, XCl₃, XCl₂. This illustrate the

The molecular formula of a common organic laboratory anesthetic is

Organic molecules that have the suffixene are unsaturated hydrocarbons that have

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

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

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

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

Palm wine turn sour with time because

Alkanals can be differentiated from alkanones by reaction with

The following are uses of sulphur except

Catalytic hydrogenation of benzene produces

The oxidation number of chlorine is +1 in

The carbon atoms on ethane are

At 25⁰C and 1atm, a gas occupies a volume of 1.50dm³. What volume will it occupy at 100⁰C and 1atm?

A current 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⇒9600C)

Pauli exclusion principle is related to

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

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

The metal extracted from cassiterite is

The following are uses of sulphur except

Equilibrium is said to be attained in a reversible reaction when

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

The following uses radioactive isotopes except for

Which of the following is needed to produce a slag during the extraction of iron in the blast furnace?

Calcium atom ionizes by

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

Which of the following halogens is the most reactive?

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

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

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

An amphoteric oxide is an

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

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