Atoms and Molecules

Atoms and Molecules

Multiple Choice

In a chemical reaction, the sum of the masses of the reactants and products remain unchanged. This is called

• Law of constant Proportion

• Law of multiple Proportion

• Law of conservation of Mass

• Law of Chemical Combination

Multiple Choice

The formula unit mass of Ca₃(PO₄)₂ is

• 309

• 310

• 311

• 300

Multiple Select

Smallest particle which cannot be divided into simpler parts

• Atom

• Parmanu

• Molecule

• Element

Multiple Choice

Atomicity of H₂SO₄

• 6

• 10

• 8

• 7