May 1 year IGCSE Entrance Test Chemistry

What is the term used for a salt which is formed by the complete neutralization of an acid?

• (a) basic salt

• (b) common salt

• (c) acid salt

• (d) normal salt

Partial neutralization of Carbonic acid forms

• (a) carbon dioxide

• (b) hydrogen carbonate

• (c) carbonate

• (d) carbon monoxide

Complete neutralization of Carbonic acid forms

• (a) carbon dioxide

• (b) hydrogen carbonate

• (c) carbonate

• (d) carbon monoxide

What is the term used for a salt which is formed by partial neutralization of an acid?

• (a) basic salt

• (d) common salt

• (c) acid salt

• (d) normal salt

Solvents used for cleaning electronic circuit boards are

• (a) chlorofluoro

  carbons

• (b) carbons

• (c) fluorides

• (d) grease

The pH of acid rain is

• (a) more than 5.6

• (b) less than 5.6

• (c) 10

• (d) 7

Ozone gas (O₃) has

• (a) unpleasant odor

• (b) pleasant odor

• (c) no odor

• (d) orange color

The upset caused in the natural balance of concentration of greenhouse gases is called

• (a) pollution

• (b) global warming

• (c) atmospheric poisoning

• (d) earth heating

The compound which is responsible for acid rain is

• (a) sulfur

• (b) sulfur dioxide

• (c) sulfur trioxide

• (d) nitrogen

Which of the following is produced when electrical discharges pass through oxygen in the air?

• (a) chlorofluorocarbons

• (b) methane

• (c) ozone

• (d) lead compounds