Question # 1

What happens to water on heating.

Choose an answer

Evaporates

Condense

Freez

None of these

Compustion is a.

Choose an answer

Physical Change

Chemical change

Thermal change

None of these

Formation of steam from water is example of.

Choose an answer

Chemical change

Physical Change

Both of these

None of these

Silver+ hydrogen suolphide+Oxygen--------------- Silver sulphide + water The above reaction is known as.

Choose an answer

Combustion

Rusting

Tarmishing

Dehydration

Chemical reaction of oxygen with other substances is called.

Choose an answer

Oxidation

Reduction

Rusting

None of these

A physical change occurs when.

Choose an answer

Iron rusts

Solution of common salt is heated

A piece of wood burns

Sygar us geated strongly

Zince oxide is ............... solid substances.

Choose an answer

Red

White

Yellow

Blue

Freezing of a liquid is a

Choose an answer

Chemical change

Chemicla property

Physical change

None of these

Select all that happen during a chemicla change.

Choose an answer

A temporary chagne occurs.

Composition of the substanes is changed.

Propertis of the sbstances are changed.

New substances with different properties are formed.

Rusting of iron takes place in the presence of.

Choose an answer

Moisture

O2

Both moisture and O2

Dry air

More Classes

Other Links

General Science 7th Class English Medium Chapter 5 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer