FUNAAB Chemistry 2018/2019 Past Questions

A mixture of proteins can best be separated by

The purity of a solid substance can be determined by its

What mass of a divalent metal Y would react with excess hydrochloric acid to liberate 224cm³ of hydrogen gas at s.t.p? [Y = 40, Molar volume of gas at s.t.p = 22.4dm³]

Which of the following will occur when some cystals of iodine are slowly heated in a test tube?

A mixture of two gases P and Q occupying volumes 300cm³ and 100cm³ respectively exerts a total pressure of 800mmHg. What is the partial pressure of Q?

A particle that contains 9 protons, 10 neutrons and 9 electrons is a

The elements in the periodic table are listed in order of increasing

The ionic radii of metals are usually

In electrovalency, the oxidation number of the participating metal is always

In which of the following molecules is hydrogen bond prominent?

The end products of burning a candle in the atmosphere are water and

The presence of ammonia gas in a desiccator can exclusively be removed by

In the removal of water hardness, permutit is generated with a strong solution of

If a solution of KNO₃ containing 17.0gdm^-3 is cooled from 80°C to 80°C, estimate the amount of KNO₃ recovered from the solution

The solubility of the soil that dissolves in a given solvent with the liberation of heat will

In the upper atmosphere, the ultra-violet light breaks off a free chlorine atom from chlorofluorocarbon molecule. The effect of this is that the free chlorine atom will

Which of the following produces relatively few ions in solution?

The conductivity of an acid solution depends on the

When one mole of hydrochloric acid reacts with one mole of sodium hydroxided, it results in a neutral solution because the reaction involves a

To what volume must 300cm³ of 0.60M sodium hydroxide solution be diluted to give a 0.4M solution?

Calculate the pH of 0.05 mol dm^-3 H₂SO₄

H₂S(g) + Cl(g) ---> 2HCl(g) + S(g) \n In the equation above, the substance that is reduced is

What is the oxidation number of sulphur in FeS₄O?

Which of the following is discharged at the cathode during the electrolysis of brine using platinum electrode?

What mass of Cu would be produced by the cathodic reduction of Cu²⁺ when 1.60A of current passes through a solution of CuSO₄ for 1 hour?[F = 96500Cmol^-1, Cu = 64]

An example of an endothermic reaction is the dissolution of

The situation obtained when a perfect gas expands into a vacuum is

The collision theory explains reaction rates in terms of

2KClO₃(g) ---> 2KCl(g) +3O₂(g) \n The importance of the catalyst in the reaction above is that

3H(g) + N(g) <---> 2NH₃ ; ΔH = -ve \n In the reaction above, lowering of temperature will

Which of the following is used in the manufacture of petrol addictive?

Diamond is a bad conductor of electricity because its bonding electrons are used in

In the laboratory preparation of oxygen, the gas cannot be collected by displacement of air because

In a chemical test, the formation of a brown ring indicates the presence of

The ability to form complex and coloured ions are characteristics of transition metals resulting from the number of electrons in their

Solvay process is used in the preparation of

Which of these alloys contain copper?

Aluminium does not react with either dilute or concentrated trioxonitrate(v) acid because

The choice of method for extracting a metal from its ores depends on the

Which of the following is used to power steam engines?

The choice of sodalime in preference to caustic soda in the laboratory preparation of methane can be attributed to it being

The fuel used in miner's lam is made up of

$$\begin{matrix} & MNO_2 \\ 2R-OH+2Na &\rarr&2RONa+H \end{matrix}$$
The reaction above demonstrates the

Benzene is a polymer of

$$\begin{matrix} & CH_3 \\ & |\\CH_3&CCH_2 &CH_3\\&|\\&CH_2CH_3\end{matrix}$$
The IUPAC nomenclature of the compound above is

Hard soaps used for laundry are mainly composed of

The conversion of unsaturated to saturated hydrocarbons is effected by the addition of

The functional groups found in amino acid are

Structural isomers of C₅H₁₀ are expected to have same

Analysis of a hydrocarbon compound indicates that it has 86% carbon. If its vapour density is 35, calculate its molecular formula.[C = 12, H = 1]