Grade 8 Physics

What is the relative density of water?

• 1

• 2

• 3

• 4

The relative density of water is ______ than the relative density of wax

• Greater

• Lesser

• Same

• All the above

Sea water has_______ density than river water

• Less

• More

• Medium

• None of these

For the safety loading of the ship under different sea conditions _______ lines are provided

• Equator

• Meridian

• Plimsol

• Graph

Swimming in _______water is much easier than in________ water

• Sea,fresh

• Fresh,sea

• Fresh,ice

• Ice,sea

The hydrogen filled balloons have _______ density than the components of gases present in the air so that it rises up

• Lesser

• Greater

• Equal

• None of these

Special hydrometers for design to test whether milk is pure or not

• Acid battery hydrometer

• Lactometer

• Barometer

• Thermometer

A Eureka can is a container with spout near it's top

• True

• False

The lightness or heaviness of an object is directly related to its

• Volume

• Mass

• Density

• Area

The particles of a ____ move randomly in all directions with the high speed

• Solid

• Liquid

• Gas

• All the above