UI Chemistry 2013/2014 Past Questions

This type of bonding involves overlapping of orbitals during which electrons are shared

Which one of the following changes is physical?

A side effect of soft water is that

Ammonia is very soluble in water because it is a ........ molecule

Citrus fruits such as lemon and grape taste sour because they contain

Soap lather is an example of a colloid in which a

The air around a petroleum refinery is most likely to contain.

The difference between colloids and suspensions is brought out clearly by the fact that while colloids

The following substances are non-electrolytes except

The hydrolysis of NH₄CI salt will give

The pollutants that are likely to be present in an industrial environment are

What is the basicity of tetraoxosulphate (VI) acid?

Which of the following gases is the most dangerous pollutant?

Which of the following ions is a pollutant in drinking water even in trace amount?

Which of the following is an example of a double salt

0.16g of methane when burnt increases the temperature of 100g of water by 40°C, what is the heat of combustion of methane if the heat capacity of water is 4.2 Jg^-1 °C^-1? (CH4=16).

A charged car battery has energy that can be converted into another energy called energy

Copper oxide is heated with charcoal to produce carbon monoxide and copper. The reaction is an example of

For each oxygen atom in hydrogen peroxide which acts as an oxidant, there is an oxygen atom which acts as / a

Given the change of phase: CO₂(g) changes to CO₂(s), the entropy of the system

In which of the following is the entropy change positive?

One of these elements is the best reducing agent.

The name of the gas driven off at the negative electrode during the electrolysis of brine is

The oxidation state of P in H₂P₂O₇^-2 is

The oxidation state of S in Ca(HSO₃)₂ is ..........