Chemistry Mock 2022

Question 1 of 50

Esters are known for their

Question 2 of 50

Which of these is a natural polymer?

Question 3 of 50

A plastic that softens on heating and can be remoulded is

Question 4 of 50

Which of these is a noble gas?

Question 5 of 50

How many electrons can the second shell hold?

Question 6 of 50

Elements in the same group have the same number of

Question 7 of 50

The atomic (proton) number tells us how many of which particle are in an atom?

Question 8 of 50

Which compound has covalent bonding?

Question 9 of 50

Ionic compounds generally have

Question 10 of 50

What is the molar mass of sulphuric acid, H₂SO₄? (H = 1, S = 32, O = 16)

Question 11 of 50

At constant temperature, the volume of a fixed mass of gas is inversely proportional to its pressure. This is

Question 12 of 50

Which gas is given off when zinc reacts with dilute hydrochloric acid?

Question 13 of 50

A carbonate reacts with an acid to give a salt, water and

Question 14 of 50

An alkali is a base that

Question 15 of 50

Increasing the concentration of a reactant increases the rate because

Question 16 of 50

An endothermic reaction

Question 17 of 50

The IUPAC name of CH₃CH₂OH is

Question 18 of 50

Sulphuric acid is manufactured by the

Question 19 of 50

Acid rain is caused mainly by

Question 20 of 50

Iron is extracted from its ore in the

Question 21 of 50

An atom has 17 protons and 18 neutrons. Its mass number is

Question 22 of 50

The electron configuration of sodium (Z = 11) is

Question 23 of 50

A typical property of transition elements is that they

Question 24 of 50

Iron can form Fe²⁺ and Fe³⁺ ions. This shows that transition elements have

Question 25 of 50

Boiling a fat or oil with sodium hydroxide gives

Question 26 of 50

Fats and oils are esters of

Question 27 of 50

Polyethene is made from ethene by

Question 28 of 50

An element has the electron configuration 2, 8, 7. To which group does it belong?

Question 29 of 50

How many covalent bonds are in a molecule of nitrogen, N₂?

Question 30 of 50

What volume of oxygen at s.t.p. is needed to burn 2 mol of hydrogen? (2H₂ + O₂ → 2H₂O)

Question 31 of 50

What is the concentration of a solution with 4 g of NaOH in 500 cm³? (NaOH = 40)

Question 32 of 50

Which salt is insoluble in water?

Question 33 of 50

Which reaction turns vegetable oil into margarine?

Question 34 of 50

Methane reacts with chlorine in sunlight by

Question 35 of 50

Hard water can be softened by adding

Question 36 of 50

The alkaline hydrolysis of a fat produces

Question 37 of 50

Detergents are better than soap in hard water because they

Question 38 of 50

Vulcanisation of rubber involves heating it with

Question 39 of 50

20.0 cm³ of 0.05 mol/dm³ H₂SO₄ neutralises x cm³ of 0.10 mol/dm³ NaOH. Find x.

Question 40 of 50

Phenolphthalein is suitable for titrating a weak acid with a strong base because

Question 41 of 50

In MnO₄⁻ + 8H⁺ + 5e⁻ → Mn²⁺ + 4H₂O, the change in oxidation number of Mn is

Question 42 of 50

The standard electrode potential of zinc is −0.76 V and copper +0.34 V. The e.m.f. of a Daniell cell is

Question 43 of 50

The electron configuration of Fe²⁺ (Fe, Z = 26) is

Question 44 of 50

Transition metal ions are coloured because of

Question 45 of 50

The complex ion [Cu(NH₃)₄]²⁺ has a

Question 46 of 50

Terylene (a polyester) is formed by

Question 47 of 50

What mass of iron is produced from 320 g of Fe₂O₃ reduced completely? (Fe = 56, O = 16)

Question 48 of 50

10 cm³ of a gaseous hydrocarbon needs 30 cm³ of oxygen and forms 20 cm³ of CO₂. The hydrocarbon is

Question 49 of 50

The percentage of nitrogen in NH₄NO₃ (N = 14, H = 1, O = 16) is

Question 50 of 50

How long must a current of 2 A flow to deposit 0.01 mol of silver? (F = 96,500 C)