JAMB Chemistry 2004 past questions

In the electrolysis of brine, the anode is

N2O4(g) 2NO2(g) In the endothermic reaction above, more product formation will be favoured by

The oxidation state of Chlorine in HClO4 is

Which of the following hydrogen halides has the highest entropy value?

The mass of silver deposited when a current of 10A is passed through a solution of silver salt for 4830s

Which of the following acts as both a reducing and an oxidizing agent?

Which of the following shows little or not net reaction when the volume of the system is decreased?

Given that H [CO] is – 110.4 kJmol-1 and H[CO2]is –393o kJmol-1, the energy change for the reaction above is

In the reaction above, Zinc has been

What volume of gas is evolved at s.t.p. if 2g of Calcium trioxocarbonate(iv) is added to a solution of hydrochloric acid?

When a solid substance disappears completely as a gas on heating, the substance is said to have undergone.

If a solution contains 4.9g of tetraoxosulphate (V1) acid, calculate the amount of copper (11) oxide that will react with it

Vulcanization involves the removal of

The alkyl group can be represented by the general formula.

C2H5OH(aq) Conc. H2SO4 Y 180oC In the reaction above, Y represent

In the production of soap, concentrated sodium chloride is added to

Oxyacetylene flame is used for 1ron-welding because it

Which of these reagents can confirm the presence of a triple bond?

H CH3 H3C - C - C -CH2 - CH2-CH3 CH3 H The IUPAC nomenclature of the compound above is

An isomer of C5 H12 is

Alkanol + Alkanoic acid Ester + Water The reverse reaction of the equation above is known as.

CH3 COOH(g) CH4(g) + CO2(g) The reaction above is

Pollution of underground water by metal ions is very likely in a soil that has high

The solubility in mol dm-3 of 20g of CuSO4 dissolved in 100g of water at 180oC is

Which of these compounds is a normal salt?

What volume of 0.5mol dm-3 H2SO4 will exactly neutralize 20 cm-3 of 0.1mol dm-3 NaOH solution?

Calcium tetraoxosulphate (V1) dissolves in water only sparingly to form a

It is difficult to achieve an orderly arrangement of the molecules of a gas because they.

The shape of the s-orbital is

Which of the following mixtures of gases is likely to burn in flame?

The property of chlorine which cause hydrogen chloride to be more ionic than the chlorine molecule is its.

In the experiment above, X is mixture of nitrogen, carbon 1V) oxide and

An electron can be added to a halogen atom to form a halide ion with

According to Charles’ law, the volume of a gas becomes zero at

When steam is passed over red-hot carbon, the substances produced are

Aluminum hydroxide is used in the dyeing industry as a

Transition metals possess variable oxidation states because they have.

The allotrope of carbon used in the decolourization of sugar is

Carbon is tetravalent because

Sodium metal is always kept under oil because it

The process by which atoms are rearrange into different molecular structures in the petroleum refining process is referred to as

Alloys are best prepared by

Which of the following is found in cotton

Sulphur (1V) oxide bleaches by

The principal constituent of natural gas is

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