IB Grade 11 Chemistry by Pavan | Practice Test to Test Your Knowledge
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IB Grade 11 Chemistry

IB Grade 11 Chemistry

Thorough mock test covering scientific inquiry, experimental design, and conceptual understanding. Includes laboratory skills, data analysis, and interdisciplinary scientific applications.

2025-07-22
Pavan Pavan
IB Class 11 Chemistry Grade 11

Duration

30 min

Questions

30

Marking

Negative

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Questions Preview

What is the value of Avogadro's constant?

A
6.022 × 10²³ entities/mol
B
1.00 × 10²³ entities/mol
C
1.00 × 10²² entities/mol
D
6.022 × 10²² entities/mol

Which of the following is a correct definition of the mole?

A
1 mol contains 6.022 × 10²³ atoms of any substance.
B
1 mol contains 1.00 × 10²³ atoms of any substance.
C
1 mol contains 6.022 × 10²² atoms of any substance.
D
1 mol contains 1.00 × 10²⁴ atoms of any substance.

What is the molar mass of carbon (C)?

A
12.011 g/mol
B
12.00 g/mol
C
6.022 g/mol
D
6.022 × 10²³ g/mol

How many moles of oxygen atoms are in 10.0 g of O₂?

A
0.3125 mol
B
0.15625 mol
C
0.5 mol
D
1.25 mol

What is the formula for calculating the number of moles from mass?

A
moles = mass × molar mass
B
moles = mass ÷ molar mass
C
moles = mass × volume
D
moles = volume ÷ molar mass

What is the balanced equation for the combustion of propane?

A
C₃H₈ + 5 O₂ ⟶ 3 CO₂ + 4 H₂O
B
C₃H₈ + O₂ ⟶ CO₂ + H₂O
C
C₃H₈ + 4 O₂ ⟶ 3 CO₂ + 4 H₂O
D
C₃H₈ + 3 O₂ ⟶ CO₂ + 2 H₂O

In the reaction 2 Al(s) + 3 Cl₂(g) ⟶ 2 AlCl₃(s), what is the mole ratio between Al and AlCl₃?

A
2:2
B
1:2
C
2:3
D
3:2

What is the limiting reagent in a reaction?

A
The reactant that is completely consumed first
B
The reactant that is present in excess
C
The reactant that produces the most product
D
The reactant that is least abundant

What is the formula for calculating the theoretical yield?

A
Theoretical yield = actual yield × percent yield
B
Theoretical yield = limiting reagent × mole ratio
C
Theoretical yield = mass of reactant ÷ molar mass
D
Theoretical yield = number of moles × molar mass

What is the ideal gas law equation?

A
PV = nRT
B
PV = RT/n
C
P = nRT/V
D
V = nP/RT

What is the molarity of a solution with 2.00 mol of solute in 4.00 L of solution?

A
0.500 M
B
2.00 M
C
8.00 M
D
0.250 M

Which of the following is the correct formula for molality?

A
molality = moles of solute ÷ liters of solution
B
molality = moles of solute ÷ kilograms of solvent
C
molality = mass of solute ÷ liters of solution
D
molality = mass of solute ÷ moles of solvent

What is the molar mass of sodium chloride (NaCl)?

A
58.44 g/mol
B
23.00 g/mol
C
35.45 g/mol
D
12.01 g/mol

Which of the following is the correct equation for percent yield?

A
Percent yield = (actual yield ÷ theoretical yield) × 100%
B
Percent yield = (theoretical yield ÷ actual yield) × 100%
C
Percent yield = (actual yield ÷ limiting reagent) × 100%
D
Percent yield = (theoretical yield ÷ limiting reagent) × 100%

What is the volume occupied by 1 mole of any ideal gas at STP?

A
22.71 L
B
22.41 L
C
24.00 L
D
23.00 L

What is the molar mass of sulfur dioxide (SO₂)?

A
64.06 g/mol
B
32.00 g/mol
C
98.00 g/mol
D
48.00 g/mol

In the reaction 2 H₂ + O₂ ⟶ 2 H₂O, what is the mole ratio of hydrogen to oxygen?

A
2:1
B
1:1
C
2:2
D
1:2

How many moles of hydrogen atoms are in 4.00 moles of H₂?

A
4.00 mol
B
8.00 mol
C
2.00 mol
D
6.00 mol

What is the volume occupied by 1.0 mol of an ideal gas at 273 K and 1 atm pressure?

A
22.41 L
B
22.71 L
C
24.00 L
D
23.00 L

What is the percent yield if the theoretical yield of a product is 50.0 g, and the actual yield is 45.0 g?

A
90.0%
B
95.0%
C
100.0%
D
85.0%

How many molecules are present in 0.25 moles of NaCl?

A
1.51 × 10²³ molecules
B
1.51 × 10²² molecules
C
1.51 × 10²⁴ molecules
D
2.51 × 10²³ molecules

Which of the following equations represents a neutralization reaction?

A
NaOH + HCl ⟶ NaCl + H₂O
B
NaOH + H₂O ⟶ NaOH₂ + OH
C
NaCl + H₂O ⟶ NaOH + Cl₂
D
Na + Cl₂ ⟶ NaCl

What is the molar mass of potassium permanganate (KMnO₄)?

A
158.04 g/mol
B
122.55 g/mol
C
118.34 g/mol
D
132.52 g/mol

How many moles of solute are in 1.00 L of a 2.00 M NaCl solution?

A
2.00 mol
B
1.00 mol
C
4.00 mol
D
0.50 mol

What is the theoretical yield of NaCl when 10.0 g of sodium reacts with excess chlorine gas?

A
17.3 g
B
20.0 g
C
15.5 g
D
10.0 g

What is the percent composition of carbon in C₆H₁₂O₆ (glucose)?

A
40.0%
B
36.0%
C
42.0%
D
50.0%

What is the molarity of a solution made by dissolving 5.0 moles of NaOH in 2.0 L of water?

A
2.5 M
B
5.0 M
C
1.0 M
D
0.5 M

What is the molality of a solution containing 10.0 g of NaCl in 500 g of water?

A
0.171 m
B
0.20 m
C
0.05 m
D
0.10 m

What is the volume of 2.00 moles of an ideal gas at STP?

A
44.82 L
B
22.71 L
C
24.00 L
D
11.36 L

What is the mole ratio of water to carbon dioxide in the combustion of propane (C₃H₈)?

A
1:2
B
2:3
C
3:2
D
1:1