H⁺ + OH^- → H₂O

The equation above illustrates

• A. precipitation
• B. hydration
• C. hydrolysis
• D. neutralization

Reduction is the process of

• A. loss of electron
• B. loss of hydrogen
• C. loss of oxygen
• D. addition of electronegative elements

Valence shell electron pair theory through hybridization predicts that boron trichloride is

• A) Arrhenius acid
• B) Lewis base
• C) Lewis acid
• D) Lowry-bronsted base

Use this following information to answer this question. Compound X was boiled with concentrated hydrochloric acid for a long time. One of the products was found to be a sugar. Compound X was probably

• A. rubber
• B. polyethene
• C. nylon
• D. cellulose

Chlorination of water for town supply is carried out to

• A) make the water colourless
• B) remove germs from the water
• C) make the water tastedful
• D) remove odour from the water

An increase in the pressure of a gas results in a decrease in its

• A. mass
• B. vapour density
• C. volume
• D. temperature

A current of 4.0 amperes was passed through copper (II) tetraoxosulphate (IV) solution for one hour using copper electrodes. What was the mass of copper deposited? (Cu = 64, 1F = 96500C)

• A) 3.2g
• B) 4.8g
• C) 6.4g
• D) 9.6g

Alums are classified as

• A. simple salt
• B. acid salts
• C. anhydrous salts
• D. double salts

Which of the following features of a human skeleton can be determined by carbon-dating?

• A. Height
• B. Mass
• C. Age
• D. Race

The relative atomic mass of chlorine is not a whole number because

• A. it is the weighted average mass of all its various isotopes
• B. it is the average mass of all the isotopes of the element
• C. the element has strong oxidizing ability
• D. the atom contains a higher number of neutrons than protons