Question

1 Chemical equation is balanced according to the law of
(a) Multiple proportion (b) Reciprocal proportion
(c) Conservation of mass (d) Definite proportions
2 Avogadro number is
(a) Number of atoms in one gram of element
(b) Number of millilitres which one mole of a gaseous
substances occupies at NTP
(c) Number of molecules present in one gram molecular
mass of a substance
(d) All of these
3 Different propartions of oxygen in the various oxides of
nitrogen prove the
(a) Equivalent proportion (b) Multiple proportion
(c) Constant proportion (d) Conservation of matter​

Answer 1

Conservation of mass

Answer 2

Answer:

conservation of mass is the correct answer