Changes Around Us - Grade 6 ANNUAL EXAMS

In general, on heating metals

• Contract

• Expand

• Can expand or contract

• None of these

When object is cooled, it's size

• Increases

• Decreases

• Remains same

• None of the above

Which one of the following is a reversible change

• Tearing of paper

• Blowing air in a balloon

• Breaking of stick

• Baked chapati

Evaporation of water is a reversible change

• True

• False

Rusting of iron is a reversible change

• True

• False

Rusting of iron is a reversible change

• True

• False

When iron is heated it

• Contracts

• Expands

• Dissolves

• Evaporates

Burning of a candle is _______

• Only a physical change

• Only a chemical change

• Both physical and chemical change

• None of these

When a metal rim is fitted on a wood it is first

• Expanded then contracted

• Contracted then expanded

• Melted then cooled

• None of these

Cooking of rice is a physical change

• True

• False