2011 JAMB Chemistry Past Questions

What is the concentration of a solution containing 2g of NaOH in 100cm³ of solution?

(Na = 23, O = 16, H = 1)

Which of the following properties is NOT peculiar to matter?

The principle of column chromatography is based on the ability of the constituents to

From the diagram above, an ideal gas can be represented by

Which of the following questions is correct about the periodic table?

The relative atomic mass of a naturally occurring lithium consisting of 90% \( \scriptsize _{3} ^{7} \textrm{ Li}\) and 10% \( \scriptsize _{3} ^{6} \textrm{ Li} \) is

An isotope has an atomic number of 15 and a mass number of 31. The number of protons it contains is

The molecular lattice of iodine is held together by

The arrangement of particles in crystal lattices can be studied using

From the diagram above, find the amount of solute deposited when 200cm³ of the solution is cooled from 55⁰C to 40⁰C.

The importance of sodium aluminate (III) in the treatment of water is to

What type of bond exists between an element X with atomic number 12 and Y with atomic number 17?

Hardness of water is mainly due to the presence of

A suitable solvent for iodine and naphthalene is

Which of the following noble gases is commonly found in the atmosphere?

N₂O_4(g) ↔ 2NO_2(g) ΔH = +ve

In the reaction above, an increase in temperature will

CH₃COOH_(aq) + OH^–_(aq) ↔ CH₃COO^–_(aq) + H₂O_(l)

In the reaction above ,CH₃COO^–_(aq) is

How many cations will be produced from a solution of potassium aluminum tetraoxosulphate (VI)?

Which of the following is NOT an alkali?

An effect of thermal pollution on water bodies is that the

Which of the following is a deliquescent compound?

A chemical reaction in which the hydration energy is greater than the lattice energy is referred to as

The function of zinc electrode in a galvanic cell is that it

CH_4(g) + Cl_2(g) → CH₃ Cl_(s) + HCl_(g)

The major factor that influences the rate of the reaction above is

The condition required for corrosion to take place is the presence of

In the diagram above, X is the

The diagram above best illustrates the effect of a decrease in __.

MnO^–_4(aq) + Y + 5Fe²⁺_(aq) → Mn²⁺_(aq) + 5Fe²⁺_(aq) + 4H₂O_(l)

In the equation above, Y is

Given that M is the mass of a substance deposited during electrolysis and Q is the quantity of electricity consumed, then Faraday’s first law can be written as

{E = Electrochemical equivalent}

The impurities formed during the laboratory preparation of chlorine gas are removed by

The effect of the presence of impurities such as carbon and sulphur on iron is that they

A few drops of concentrated HNO₃ is added to an unknown solution and boiled for a while.  If this produces a brown solution, the cation present is likely to be

The bleaching action of chlorine gas is effective due to the presence of

In the laboratory preparation of oxygen, dried oxygen is usually collected over

The property of concentrated H₂SO4 that makes it suitable for preparing HNO₃ is its

Bronze is preferred to copper in the making of medals because it

The constituent of baking powder that makes the dough to rise is

Which of the following compounds is used as a gaseous fuel?

The ability of carbon to form long chains is referred to as  __.

Which of the following compounds will undergo polymerization reaction?

The compound above exhibits

An organic compound has an empirical formula CH₂O and vapour density of 45. What is its molecular formula?

[C = 12, H = 1, O = 16]

At 25^o and zymase as catalyst,

C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ + energy

The reaction represented by the equation above is useful in the production of

The number of isomers that can be obtained from C₄H₁₀ is

The functional groups present in the compound above are

Which of the following is a primary amine?

Two organic compounds K and L were treated with a few drops of Fehling’s solution respectively K formed a brick-red precipitate while L remains unaffected. The compound K is an

Which of the following statements is true about 2-methylpropane and butane

with conc H₂SO₄ as catalyst

CH₃COOH + C₂H₅OH → CH₃COOC₂H₅ + H₂O

The reaction above is best described as