Question # 1

Formation of steam from water is example of.

Choose an answer

Chemical change

Physical Change

Both of these

None of these

Original colur or Nichrome wire is.

Choose an answer

Silver grey

Red hot

White hot

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.

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

Choose an answer

Combustion

Rusting

Tarmishing

Dehydration

What happens to water on heating.

Choose an answer

Evaporates

Condense

Freez

None of these

Rusting of iron takes place in the presence of.

Choose an answer

Moisture

O2

Both moisture and O2

Dry air

On heating sugar changes into

Choose an answer

Carbon

Water

Both carbon and water

Heat

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

Product fo combustion is.

Choose an answer

C

O2

CO2

All of these

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