Advertisements
Advertisements
प्रश्न
Complete the statement given below by filling in the blanks with the correct words.
Atoms contain ________ with positively charged ________.
Advertisements
उत्तर
Atoms contains nucleus with positively charged protons.
APPEARS IN
संबंधित प्रश्न
In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium acetate. Show that these observations are in agreement with the law of conservation of mass.
Sodium carbonate + acetic acid → sodium acetate + carbon dioxide + water
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?
State the law of conversation of mass.
When magnesium is burnt in air, there is an increase in mass after the reaction.
What is mass ?
If an object weighs 6 kg on earth. What will be its weight on moon ?
Fill in the blank:
Matter is anything that has............. and occupies .............
State the law of conservation of mass.
Name the scientist who gave law of conservation of mass.
‘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 :
State the ‘law of conservation of mass’.
State the main points of Landolt’s experiment for experimental evidence of the law.
Match the following.
| Law of conservation of mass | Sir William Crookes |
| Law of constant proportion | James Chadwick |
| Cathode rays | Joseph Proust |
| Anode rays | Lavoisier |
| Neutrons | Goldstein |
Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?
The chemical symbol for nitrogen gas is ______.
Name the four laws of chemical combinations.
