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
State the law of conversation of mass.
What do you observe when, barium chloride solution is mixed with sodium sulphate solution ?
What is mass ?
Fill in the blank:
Matter is anything that has............. and occupies .............
‘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 ?
The law of conservation of mass was given by :
Complete the statement given below by filling in the blanks with the correct words.
Atoms contain ________ with positively charged ________.
State the main points of Landolt’s experiment for experimental evidence of the law.
Select the correct answer from A, B, C, D & E for the statement given below:
The process of change of a liquid into vapour, [gas] on heating.
Name the four laws of chemical combinations.
