UNN Chemistry 2015/2016 DAY 2 Past Questions

The basicity of CH₃COOH is

Ethanol reacts with conc. tetraoxosulphate(VI) acid at a high temperature above 170°C to form

The type of bonding in iodine molecule is

The acid used in electrolysis of water is

In the diagram above, which of the curves represents the evolution of oxygen with time in the equation
2KClO_3(s) --> 2KCl_(s) + 3O_2(g)?

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

The elements that belong to the third period of the periodic table are

Synthetic gas is a mixture of

Which of the following is a neutralization reaction? The addition of

A metal X forms two bromides with formulae XBr₂ and XBr₃. What type of bonding exists between X and bromine in the bromides?

Calculate the mass of 1.12dm³ of chlorine gas.

The sulphide which is insoluble in dilute hydrochloric acid is

What is the PH of a 0.001 moldm^-3 solution of sodium hydroxide?

The type of isomerism shown by cis- and trans- isomers is

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