Chemistry Grade 11 Chapter 1

Chemistry is the branch of

• Biology

• Physics

• Science

• Computer

Zeros that locate the decimal point in numbers larger than one are

• Significant

• non significant

Mole ratio is obtained by dividing % of elements with it's

• Atomic number

• Atoms

• Molecules

• Atomic Mass

what is the formula of molecular formula

• Molecular Mass divide by Empirical Formula

• Molecular Mass divide by Mole Ratio

• Molecular Mass divide by Simplest Mole Ratio

• Empirical Formula divide by given %

The stoichiometric relation in which the reactant and product both are obtained in mass is called

• Mass - Volume Relationship

• Volume - Volume Relationship

• Mass - Mass Relationship

If Empirical Formula of compound is C3H4N. What is Molecular Formula of it

• C3H4N

• C4H6N5

• C6H8N2

If CO2 is 33.8 and CaO is 88.4 what is Limiting Reactant?

• 88.4

• 33.8

• 896.8

The Stoichiometric Relation in which one of the reactant is mass and other is volume is called

• Mass -Mass Relationship

• Mass -Volume Relationship

• Mass-Gas Relationship

• Volume-Volume Relationship

The Atomic Mass of Na is

• 20 a.m.

• 24 a.m.

• 23 a.m.

• 28 a.m.

When two different atoms combined, they form

• Molecule

• Atom

• Compound

• Element