Oxides of non metals are _______ in nature.
Basic
Acidic
Neutral
All of these
The body of plant is made up mostly of
Chlorine
Iron
Mercury
None of these
Farmers keeping there field ploughed for
Sodium
Potassium
Calcium
Magnesium
The net resultant force, acting on the molecules on the surface is to to the _______________ direction .
upward
downward
forward
backward
A body can displace equal amount of water means , the body will ______________ in the water.
Basic oxides
Neutral oxides
Acidic oxides
The force of attraction which stick the water particle at the window glass is
Adhesion
Cohesion
Difusion
Osmosis
Sodium metal is stored in-
Water
Alcohol
Kerosene
Ether
The level of mercury in the tube is lower than that in the outside . This is because of the fact that the cohessive force of mercury is ________________ than the adhesive force between mercury and glass .
Tungsten
Graphite
It is due to ________________ that a blade or a pin floats on water if it is placed very carefully .
Iron rod
Sulphur
Coal piece
Wood
The basis of capillarity exist between the liquid molecules and the molecules of substance made up of vessel is
Bismuth
Silver