An organic compound X has the following properties: I. It is not miscible with water. ll. lt has boiling point of 77^oC lll. lt has a sweet odour lV. lt is insoluble in sodium hydrogen carbonate solution . V lt does not decolourize bromine water X is therefore

A. methane

B. ethanoic acid

C. ethene

D. ethyl ethanoate

E. carbon tetrachloride

Which are the correct IUPAC names for H-CO\(_2\)CH\(_3\) and CH \(\equiv\) CH

A. Methyl methanoate and ethene

B. Metanoic acid and ethyne

C. Ethyl methanoate and ethyne

D. Methyl methanoate and ethyne

E. Ethanoic acid and ethene

Which of the following substances are all made by the process of polymerization?

A. Nylon and soap

B. Ethanoic acid margarine and ethanol

C. Nylon and artificial rubber

D. Soap and butane

E. Margarine and nylon

The reaction of zinc with copper (ll) ions in aqueous solution can be represented as follows: Cu ²⁺(aq) +Zn (s) → Cu(s) + Zn ²⁺(aq).Which of the following is the most complete description of this reaction?

A. Cpper (ll) ions are being reduced

B. Zinc is being oxidized.

C. Copper (ll) ions and zinc are being reduced

D. copper (ll) ions and zinc are being oxidized

E. copper(ll) ions are being reduced and zinc oxidized

The oxidation state of manganese in potassium permanganate is

A. +7

B. +5

C. +3

D. +2

E. +1

When carbondioxide is bubbled into limewater a white precipitate is formed. If the passage of the gas is continued, the precipitate disappears. The reason for this is

A. calcium carbonate is formed which on reaction dissolves

B. calcium hydrogen carbonate is precipitated and then dissolves

C. calcium carbonate is formed which on reaction with further carbondioxide forms solube calcium hydrogen carbonate

D. concentration of the solution has occurred with the deposition of calcium hydroxide

E. the solution has become saturated and solid carbondioxide has been deposited

Methanoic acid mixes with water in all proportions and has about the same boiling point as water which of the following methods would you adopt to obtain pure water from a mixture of stand, water and methanoic acid?

A. fractional distillation

B. filtration followed by distillation

C. neutralization with sodium hydroxide followed by distillation

D. esterification with ethanol followed by distillation

E. neutralization with sodium hydroxide followed by filtration

Which of the following statements applies during the electrolysis of sodium hydroxide solution using platinum electrodes?

A. Na⁺ ions are discharged at the cathode

B. Hydrogen ions are discharged at the anode

C. the concentration of sodium hydroxide decrease at both electrode compartments

D. the concentration of sodium hydroxide increases at the cathode only

E. the concentration of sodium hydroxide increases at the anode only

Which of the following statements is true? When the potassium atom forms its ion

A. it gains one electron and becomes neutral

B. its atomic number decreases

C. it achieves electronic configuration of orgon

D. it loses one proton

E. it loses one neutron

Which of the following contains two amphoteric oxides?

A. sodium oxide, Zinc oxide , Magnesium oxide

B. Aluminium oxide, Calcium oxide, Zinc oxide

C. Potassium oxide, Lithium oxide, Carbon monoxide

D. Silver oxide, Lead oxide, Sodium oxide

E. Sulphur dioxide, Aluminium oxide, Carbon monoxide