Advertisements
Advertisements
प्रश्न
Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?
Advertisements
उत्तर
It is because the small particles of the cathode rays (electrons) have mass and energy. This energy is used in rotating the paddle wheels.
APPEARS IN
संबंधित प्रश्न
Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?
What do you observe when, barium chloride solution is mixed with sodium sulphate solution ?
If an object is taken to the moon from the earth what will be its mass ?
Give reason for the following.
Electricity is not considered matter.
‘If 100 grams of calcium carbonate (whether in the form of marble or chalk) are decomposed completely, then 56 grams of calcium oxide and 44 grams of carbon dioxide are obtained’. Which law of chemical combination is illustrated by this statement ?
Which postulate of Dalton's atomic theory can explain the law of conservation of mass ?
The law of conservation of mass was given by :
An ionic compound will be formed by the combination of one of the following pairs of elements. This pair of elements is :
State the ‘law of conservation of mass’.
The chemical symbol for nitrogen gas is ______.
