Enfant India English School
sub : science. marks :10
Note: all questions is compulsory.
Q1) what is atom ? what
What is molecular?
Q2) what is law of chemical combination?
Q3) what is atomic number and atomic mass number?
Q4) find out the 2M molecular weight of given compound
a) H2 SO4 b) H2O
Q5) what is valency ? 2M Explain with one example?
