Live Education Quiz

1

Ionic compounds are usually:

A Soft solids B Gases C Hard and brittle solids D Liquids

2

The property of solubility in water is common for:

A Covalent compounds B Ionic compounds C All compounds D Non-polar compounds

3

Which law forms the basis of stoichiometry?

A Law of inertia B Law of conservation of mass C Law of motion D Law of gravitation

4

Which molecule contains a single covalent bond?

A O2 B N2 C H2 D CO2

5

Covalent bonds are commonly formed between:

A Metals B Non-metals C Metal and non-metal D Ions

6

The number of atoms in one mole of aluminum is:

A 3 B 27 C 6.02 × 10^23 D 13

7

Which quantity is conserved in a chemical reaction?

A Volume B Mass C Temperature D Energy only

8

If empirical formula is CH2 and molecular mass is 28, molecular formula is:

A CH2 B C2H4 C C3H6 D CH4

9

Stoichiometric coefficients are obtained from:

A Chemical equation B Chemical formula C Periodic table D Laboratory data

10

How many moles are present in 36 g of water?

A 1 B 2 C 3 D 4

11

Gram atomic mass is equal to:

A Atomic number in grams B Atomic mass in grams C Mass number in grams D Neutron number in grams

12

The reactant that limits the amount of product formed is called:

A Excess reagent B Catalyst C Limiting reagent D Product

13

Covalent compounds are generally:

A Good conductors B Poor conductors C Metallic D Ionic

14

Covalent compounds usually have:

A High melting points B Low melting points C No melting point D Very high conductivity

15

Which is an example of intermolecular force?

A Covalent bond B Ionic bond C Hydrogen bonding D Metallic bond

16

The mass of one mole of carbon-12 is:

A 6 g B 12 g C 24 g D 1 g

17

Electron dot structure shows:

A Neutrons only B Valence electrons C All electrons D Protons only

18

In NaCl, chlorine atom:

A Loses electron B Gains electron C Shares proton D Loses neutron

19

The molar mass of H2O is:

A 16 g/mol B 17 g/mol C 18 g/mol D 20 g/mol

20

Which compound contains an ionic bond?

A H2O B CO2 C NaCl D O2

21

Which bond is formed due to electrostatic attraction?

A Covalent bond B Ionic bond C Hydrogen bond D Single bond

22

Which substance shows hydrogen bonding?

A NaCl B CH4 C H2O D CO2

23

Hydrogen bonding occurs when hydrogen is bonded with:

A Carbon B Nitrogen, oxygen or fluorine C Sulfur D Chlorine

24

Which bond is the strongest?

A Single bond B Double bond C Triple bond D Hydrogen bond

25

The mole is a unit used to measure:

A Mass B Volume C Amount of substance D Density

26

Which is also called Lewis structure?

A Orbital diagram B Electron dot formula C Molecular formula D Structural formula

27

One mole of any substance contains:

A 6.02 × 10^21 particles B 6.02 × 10^22 particles C 6.02 × 10^23 particles D 6.02 × 10^24 particles

28

A polar covalent bond is formed when electrons are:

A Transferred completely B Shared equally C Shared unequally D Not shared

29

How many moles are present in 22 g of CO2?

A 0.25 B 0.5 C 1 D 2

30

The study of chemical bonding helps in understanding:

A Atomic mass B Molecular structure C Weather system D Earth rotation

Chem – Chapter 5: Chemical Bonding + Chapter 6: Stoichiometery