Science

Sl unit of temperature is

• Joule

• Kelvin

• Volt

• Second

Which one of the following is a poor conductor of heat?

• Glass

• Silver

• Iron

• Copper

Tags

NGSS.MS-PS3-4

When an object is heated, the molecules that make up the object is

• Begin to move faster

• Lose energy

• Become heavier

• Become lighter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The hotness of the object is determined by it's

• Coldness

• Humidity

• Temperature

• Water molecules

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which one of the following is produced in power station?

• Water

• Petrol

• Coal

• Electricity

Name the device which converts chemical energy into electrical energy.

• Cell

• Motor

• Machine

• Charging particles

Tags

NGSS.HS-PS3-3

The electric wire which sag in summer become straight in ___________

• Summer

• Autumn

• Winter

• Spring

Tags

NGSS.MS-PS3-4

Which one of the following is used to join two steel plates together?

• Rivets

• Coal

• Water

• Energy

Temperature of water,in boiling condition is _________.

• 70°C

• 80°C

• 60°C

• 100°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which among the following cannot be recharged again.

• Primary cell

• Secondary cell

• Tertiary cell

• None of the above