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Science CBSE Homework Assignments
Class 9
Atoms and molecules
Law of chemical combination
1.
Atomic theory
Task:
4
m.
Choose the correct answer
:
1
.
Which of the below laws proposed by a chemist Lavoisier and Joseph L. Proust by conducting many experiments?
Law of constant proportions
None of these
Law of conservation of mass
Both laws
2
.
The symbol of _________is \(Au\) which is from the Latin word of Aurum \((Au)\).
Gold
Silver
Argon
None of these
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