Class 7

Which instrument is used to measure the volume of a liquid in a laboratory ?

• Physical beam

• Scale

• Measuring cylinder

• Maana

What is the SI unit of electric current ?

• volt

• Ohm

• Watt

• Ampere

What is meant by displacement?

• The shortest distance between two points

• The largest distance between two points.

• The length of path of two points.

• None of above.

What is the rate of change of velocity of a moving body?

• Speed

• Velocity

• Acceleration

• Motion

Which type of the simple machine is the axe?

• Lever

• Screw

• Wedge

• Inclined plane

Which type of the simple machine is winding road in hill?

• Lever

• Wedge

• Screw

• Inclined plane

What is the mode of transmission of heat in vacuum?

• conduction

• radiation

• convection

• all of those

In which object the regular reflection takes place?

• white paper

• black board

• table

• plane mirror.

What type of change takes place while burning paper?

• state change

• physical change

• chemical change

• change in appearance

Which animal gives birth to young one directly ?

• Pigeon

• Bats

• Parrot

• Peacock