In the human digestive system,digestion starts in the
Electricity is produced through dry cell from
A metallic plate sticks firmly on the mouth of a water vessel made from another metal.By the way of heating,one can detach the plate from the vessel.This is because heat expands
Arrange the following layers of atmosphere vertivally from the surface of the earth
1.Mesosphere
2.Troposphere
3.Stratosphere
4.Thermosphere
Which among the following is not true for mammals?
Which one among the following compounds have the same equivalent weight and molecular weight?