Inorganic Chemistry Quizzes for Year 13 Chemistry Students

Question 1

How does the periodic table primarily organize elements?

Accepted Answer

By chemical properties and recurring patterns

Answer

By atomic mass alone

Answer

By the number of neutrons in the nucleus

Question 2

Which of the following elements belongs to the group of halogens?

Accepted Answer

Chlorine

Answer

Sodium

Answer

Potassium

Answer

Calcium

Question 3

Which element among the following has the largest atomic radius?

Accepted Answer

Rubidium

Answer

Lithium

Answer

Sodium

Answer

Potassium

Question 4

Which of the following is considered a weak acid?

Accepted Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Sulfuric acid

Answer

Nitric acid

Question 5

Which element in the list below is classified as a transition metal?

Accepted Answer

Iron

Answer

Sodium

Answer

Chlorine

Answer

Calcium

Question 6

Identify the formula that represents a coordination complex:

Accepted Answer

[Fe(H2O)6]2+

Answer

Fe2O3

Answer

NaCl

Answer

H2SO4

Question 7

Which of the following gases is known as a greenhouse gas?

Accepted Answer

Carbon dioxide

Answer

Oxygen

Answer

Nitrogen

Answer

Helium

Question 8

What is the hybridization of the carbon atom in methane, CH4?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 9

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Ammonia

Question 10

Which of the following elements is classified as a metalloid?

Accepted Answer

Silicon

Answer

Aluminum

Answer

Copper

Answer

Sodium

Question 11

In the compound K₂MnO₄, what is the oxidation state of manganese?

Accepted Answer

+6

Answer

+2

Answer

+4

Answer

+7

Question 12

The reaction between sodium hydroxide and hydrochloric acid is an example of a:

Accepted Answer

Neutralisation reaction

Answer

Redox reaction

Answer

Decomposition reaction

Answer

Precipitation reaction

Question 13

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Ammonium hydroxide

Question 14

What is the pH of a solution with a hydroxide ion concentration of 1 x 10⁻³ mol/dm³?

Accepted Answer

11

Answer

1

Answer

7

Answer

14

Question 15

Which of the following elements is classified as a metalloid?

Accepted Answer

Phosphorus

Answer

Sodium

Answer

Chlorine

Answer

Iron

Question 16

Which of the following compounds is ionic?

Accepted Answer

Sodium chloride

Answer

Water

Answer

Sucrose

Answer

Carbon dioxide

Question 17

Determine the molecular geometry of SF6.

Accepted Answer

Octahedral

Answer

Linear

Answer

Square planar

Answer

Trigonal pyramidal

Question 18

Identify the type of reaction represented by the combustion of methane.

Accepted Answer

Redox reaction

Answer

Neutralization reaction

Answer

Precipitation reaction

Answer

Complex ion formation reaction

Question 19

What is the coordination number of the metal ion in the complex ion [Fe(CN)6]4-?

Accepted Answer

6

Answer

2

Answer

4

Answer

8

Question 20

Which of the following non-metals is vital for life processes?

Accepted Answer

Carbon

Answer

Sodium

Answer

Iron

Answer

Magnesium

Question 21

Identify the ionic compound among the given options:

Accepted Answer

Sodium chloride

Answer

Glucose

Answer

Water

Answer

Carbon dioxide

Question 22

Which of the following reactions represents a redox reaction?

Accepted Answer

Fe2O3 + 3H2 → 2Fe + 3H2O

Answer

NaOH + HCl → NaCl + H2O

Answer

2Na + Cl2 → 2NaCl

Answer

MgCO3 → MgO + CO2

Question 23

Which alkali metal exhibits the highest reactivity?

Accepted Answer

Lithium

Answer

Sodium

Answer

Potassium

Answer

Rubidium

Question 24

Identify the noble gas from the following options:

Accepted Answer

Helium

Answer

Oxygen

Answer

Nitrogen

Answer

Carbon dioxide

Question 25

Which of the following substances is a semiconductor?

Accepted Answer

Silicon

Answer

Gold

Answer

Copper

Answer

Iron

Question 26

Which compound is expected to be insoluble in water?

Accepted Answer

BaSO4

Answer

NaCl

Answer

KCl

Answer

NaNO3

Question 27

Identify the transition metal in the following options:

Accepted Answer

Copper

Answer

Calcium

Answer

Potassium

Answer

Chlorine

Question 28

What is the coordination number of the cobalt ion in the complex ion [Co(NH3)6]3+?

Accepted Answer

6

Answer

4

Answer

5

Answer

8

Question 29

Which substance behaves as a weak electrolyte in an aqueous solution?

Accepted Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Sodium chloride

Answer

Potassium hydroxide

Question 30

The reaction between a metal and a halogen is typically:

Accepted Answer

Exothermic and produces a salt

Answer

Endothermic and produces a salt

Answer

Endothermic and produces a covalent compound

Answer

Exothermic and produces a covalent compound

Question 31

Which of the following oxides is an **acid oxide**?

Accepted Answer

Sulfur dioxide

Answer

Sodium oxide

Answer

Magnesium oxide

Answer

Calcium oxide

Question 32

Which of the following reactions is an example of a **redox reaction**?

Accepted Answer

Combustion

Answer

Neutralization

Answer

Precipitation

Answer

Decomposition

Question 33

Which of the following elements exhibits the characteristics of a transition metal?

Accepted Answer

Iron

Answer

Sodium

Answer

Potassium

Answer

Chlorine

Question 34

Identify the compound that possesses acidic properties.

Accepted Answer

Hydrochloric acid

Answer

Sodium chloride

Answer

Carbon dioxide

Answer

Ammonia

Question 35

Identify the reaction that qualifies as a redox reaction.

Accepted Answer

Disproportionation of hypochlorite ions

Answer

Neutralization of an acid and a base

Answer

Precipitation of a metal hydroxide

Answer

Combustion of a hydrocarbon

Question 36

Determine the empirical formula of a compound that consists of 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass.

Accepted Answer

CH2O

Answer

C2H4O

Answer

C3H6O

Answer

C4H8O2

Question 37

Determine the conjugate acid of the hydroxide ion (OH-).

Accepted Answer

Hydronium ion (H3O+)

Answer

Water (H2O)

Answer

Hydrogen ion (H+)

Answer

Hydroxide ion (OH-)

Question 38

Which technique is most suitable for determining the molecular weight of a coordination complex?

Accepted Answer

Mass spectrometry

Answer

NMR spectroscopy

Answer

IR spectroscopy

Answer

UV-Vis spectroscopy

Question 39

How do spectroscopic techniques like X-ray diffraction and nuclear magnetic resonance (NMR) help us understand the structure and bonding of inorganic compounds?

Accepted Answer

They show the arrangement of atoms and distances between them in the compound.

Answer

They identify the functional groups in the compound.

Answer

They determine the molecular weight and formula of the compound.

Answer

They predict the reactivity of the compound.

Question 40

Which of the following is considered a weak acid?

Accepted Answer

CH₃COOH

Answer

HCl

Answer

H₂SO₄

Answer

HNO₃

Question 41

Which of the following elements is classified as a transition metal?

Accepted Answer

Cu

Answer

Na

Answer

Mg

Answer

Al

Question 42

What is the molecular shape of the CH₄ molecule according to VSEPR theory?

Accepted Answer

Tetrahedral

Answer

Linear

Answer

Trigonal planar

Answer

Trigonal pyramidal

Question 43

What is the name of the ionic compound with the formula Fe₂O₃?

Accepted Answer

Iron(III) oxide

Answer

Iron(II) oxide

Answer

Iron(IV) oxide

Answer

Iron(V) oxide

Question 44

Which of the following is a defining property of noble gases?

Accepted Answer

They are extremely unreactive.

Answer

They have high melting points.

Answer

They form ionic bonds easily.

Answer

They are highly flammable.

Question 45

Which of the following substances is correctly classified as ionic?

Accepted Answer

Sodium chloride (NaCl)

Answer

Methane (CH₄)

Answer

Water (H₂O)

Answer

Hydrogen chloride (HCl)

Question 46

Calculate the molar mass of water (H₂O) in grams per mole.

Accepted Answer

18.02

Answer

20.02

Answer

16.02

Answer

22.02

Question 47

Which of the following is considered a weak acid?

Accepted Answer

Acetic acid (CH₃COOH)

Answer

Hydrochloric acid (HCl)

Answer

Sulfuric acid (H₂SO₄)

Answer

Nitric acid (HNO₃)

Question 48

Iron is an example of which group of elements?

Accepted Answer

Transition metals

Answer

Alkali metals

Answer

Halogens

Answer

Noble gases

Question 49

Which of the following elements is a transition metal?

Accepted Answer

Iron

Answer

Sodium

Answer

Chlorine

Answer

Oxygen

Question 50

Which of the following is a characteristic of noble gases?

Accepted Answer

Inertness

Answer

Polyatomic

Answer

Reactivity

Answer

Colored

Question 51

Which of the listed compounds exhibits amphoteric behavior?

Accepted Answer

Al2O3

Answer

Na2O

Answer

CaO

Answer

SiO2

Question 52

Identify the hybridization of the central atom in the molecule SF6.

Accepted Answer

sp3d2

Answer

sp3

Answer

sp2

Answer

dsp3

Question 53

Which of the following reactions exemplifies disproportionation?

Accepted Answer

2 Cu+ → Cu2+ + Cu0

Answer

2 NH3 → N2 + 3 H2

Answer

2 AgNO3 → 2 Ag + 2 NO2 + O2

Answer

Fe2O3 + 3 CO → 2 Fe + 3 CO2

Question 54

Establish the coordination number of the metal ion in the complex [Fe(CN)6]4-.

Accepted Answer

6

Answer

8

Answer

10

Answer

4

Question 55

Which of the following substances acts as a Lewis acid?

Accepted Answer

BF3

Answer

NH3

Answer

H2O

Answer

NaOH

Question 56

Identify the weak electrolyte among the following compounds.

Accepted Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Potassium hydroxide

Answer

Sodium chloride

Question 57

Identify the element that is classified as a noble gas in the periodic table.

Accepted Answer

Helium

Answer

Oxygen

Answer

Sodium

Answer

Chlorine

Question 58

Which of the listed compounds exhibits strong acid properties?

Accepted Answer

Hydrochloric acid

Answer

Sodium hydroxide

Answer

Ammonium hydroxide

Answer

Acetic acid

Question 59

Identify the compound that is insoluble in water according to the solubility rules.

Accepted Answer

Barium sulfate

Answer

Potassium nitrate

Answer

Ammonium carbonate

Answer

Sodium chloride

Question 60

Determine the hybridization of the carbon atom in the methane molecule (CH4).

Accepted Answer

sp3

Answer

sp3d

Answer

sp

Answer

sp2

Question 61

Which of the following reactions can be classified as a redox reaction?

Accepted Answer

2Na + 2H2O -> 2NaOH + H2

Answer

CaCO3 -> CaO + CO2

Answer

NaCl + AgNO3 -> AgCl + NaNO3

Answer

NH3 + HCl -> NH4Cl

Question 62

Identify the compound that acts as a Lewis acid.

Accepted Answer

BF3

Answer

NH3

Answer

H2O

Answer

NaOH

Question 63

Determine the oxidation state of chromium in the compound K₂Cr₂O₇.

Accepted Answer

+6

Answer

+4

Answer

+3

Answer

+5

Question 64

Identify the type of reaction that occurs when a metal reacts with an acid, resulting in the formation of a salt and hydrogen gas.

Accepted Answer

Displacement reaction

Answer

Neutralization reaction

Answer

Redox reaction