Teaching TS DSC Secondary Grade (సెకండరీ గ్రేడ్ టీచర్) Teacher 2024 Mock Test General Science Chemistry Basic Concepts of Chemistry
Which statement defines the law of definite proportions.
1
Equal volumes of all gases at the same temperature and pressure should contain equal number of molecules.
2
If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in the ratio of small whole numbers.
3
A given compound always contains exactly the same proportion of elements by weight.
4
When gases combine or are produced in a chemical reaction they do so in a simple ratio by volume, provided all gases are at the same temperature and pressure.