MCQ-3: Summer 2022
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Which change of state is an exothermic process?CorrectIncorrect
In which state does 1 dm3 of methane contain the most particles?CorrectIncorrect
Which dye on the chromatogram is a pure substance?
Which piece of apparatus is used to measure exactly 5.00 cm3 of a liquid?CorrectIncorrect
Fermentation of sugar produces a mixture of ethanol solution and solid yeast.
How is the solid yeast removed from the mixture?CorrectIncorrect
Matter exists as elements, compounds and mixtures.
Which row identifies an element, a compound and a mixture?
element compound mixture A calcium potassium carbonate sodium chloride B brass sodium chloride air C calcium sodium chloride brass D sodium chloride water potassium carbonateCorrectIncorrect
Which pair of statements about diamond and graphite is correct?
An isotope of chromium is represented by 5224Cr.
Which statement about an atom of this isotope of chromium is correct?CorrectIncorrect
Sodium is in Group I of the Periodic Table and chlorine is in Group VII.
Which row describes what happens when sodium bonds ionically with chlorine?
sodium atoms ion formed chlorine atoms ion formed A gain an electron Na– lose an electron Cl+ B gain an electron Na+ lose an electron Cl– C lose an electron Na– gain an electron Cl+ D lose an electron Na+ gain an electron Cl–CorrectIncorrect
Caesium fluoride is an ionic compound.
Which statements about caesium fluoride are correct?
- It conducts electricity when solid.
- It has a high melting point.
- It is soluble in water.
- It is highly volatile.
The structure of a molecule of a compound is shown.
What is the formula of this compound?CorrectIncorrect
Calcium carbonate, CaCO3, reacts with dilute hydrochloric acid to produce carbon dioxide.
The equation for the reaction is shown. The relative formula mass of calcium carbonate is 100.
CaCO3 + 2HCl → CaCl2 + H2O + CO2
10 g of calcium carbonate is reacted with an excess of dilute hydrochloric acid.
Which mass of carbon dioxide is produced?CorrectIncorrect
Molten sodium chloride and concentrated aqueous sodium chloride are electrolysed using platinum electrodes.
What are the products at the negative electrode (cathode) in each electrolysis?
A hydrogen hydrogen B hydrogen sodium C sodium hydrogen D sodium sodiumCorrectIncorrect
An object is electroplated with silver using an aqueous silver salt as the electrolyte.
Which row is correct?
the object to be
electroplated is the
the other electrode
is made from
A anode carbon B anode silver C cathode carbon D cathode silverCorrectIncorrect
Which row describes the changes that occur in an endothermic reaction?
energy change temperature A energy given out to
decreases B energy given out to
increases C energy taken in from
decreases D energy taken in from
Which statement about fuels is correct?CorrectIncorrect
A sequence of changes involving sulfur is shown.
Which row describes the changes?
change 1 change 2 A chemical chemical B chemical physical C physical chemical D physical physicalCorrectIncorrect
Magnesium is added to dilute hydrochloric acid.
25 cm3 of gas is given off in the first 30 s of the reaction.
The experiment is repeated at a lower temperature. All other reaction conditions are the same.
Which volume of gas is produced in the first 30 s of this reaction?CorrectIncorrect
The equation for the reaction between magnesium and copper(II) oxide is shown.
Mg + CuO → MgO + Cu
Which substance is oxidised?CorrectIncorrect
Methyl orange is added to dilute hydrochloric acid and to aqueous sodium hydroxide.
What is the colour of the methyl orange in each solution?
colour in dilute
colour in aqueous
A orange red B red yellow C red orange D yellow redCorrectIncorrect
Compound X is dissolved in water and two separate samples of the solution are tested.
The results of the tests are shown.
test observation add aqueous sodium hydroxide a white precipitate forms
which is insoluble in excess
acidify with dilute nitric acid
and add aqueous silver nitrate
a yellow precipitate forms
What is compound X?CorrectIncorrect
Which statement about the Periodic Table is correct?CorrectIncorrect
Part of the Periodic Table is shown.
Which element is a soft solid that reacts violently with cold water?
Three properties of element X are listed.
- It contains atoms with a full outer shell of electrons.
- It is monoatomic.
- It is unreactive.
In which part of the Periodic Table is the element placed?CorrectIncorrect
Some properties of the elements in Group VII of the Periodic Table are shown.
colour F -220 -188 pale yellow Cl -101 -35 green Br -7 59 brown I 114 184 At 302 380
Which statement is correct?CorrectIncorrect
Which process is used to obtain the metal calcium from its ore?CorrectIncorrect
Which row links the property of a metal to its use?
property use A high density aircraft bodies B high reactivity food containers C good electrical conductor cooking pans D ductile electrical wiringCorrectIncorrect
The table gives some properties of an element.
melting point in ∘C 3422 appearance of the element grey appearance of the chloride of the element dark blue density in g / cm3 19.2 electrical conductivity when solid good
Which other property does this element have?CorrectIncorrect
A metal reacts vigorously with cold water.
Which statement about the metal is correct?CorrectIncorrect
Which row describes the colour changes when water is added to anhydrous cobalt(II) chloride and anhydrous copper(II) sulfate?
A blue to pink white to blue B blue to white blue to pink C pink to blue blue to white D white to blue pink to blueCorrectIncorrect
The gases produced by a burning fuel are passed through solution Z using the apparatus shown.
The fuel contains compounds of sulfur.
Which row identifies solution Z and the result obtained when the fuel contains compounds of sulfur?
solution Z result A acidified potassium manganate(VII) turns colourless B acidified potassium manganate(VII) turns purple C litmus bleached D litmus turns blueCorrectIncorrect
Which information about carbon dioxide and methane is correct?
carbon dioxide methane A formed when vegetation decomposes ✔ ✘ B greenhouse gas ✔ ✔ C present in unpolluted air ✘ ✘ D produced during respiration ✘ ✔
✔ = correct
✘ = not correctCorrectIncorrect
Which row identifies uses of sulfur?
use 1 use 2 use 3 A making ammonia bleaching wood pulp food preservative B making sulfuric acid bleaching wood pulp food preservative C making sulfuric acid food preservative as an NPK fertiliser D making ammonia food preservative as an NPK fertiliserCorrectIncorrect
Which statements about lime are correct?
- Lime is made by heating calcium carbonate (limestone).
- Lime is used to desulfurise flue gases.
- Lime is used to treat alkaline soil.
- The chemical name for lime is calcium oxide.
Which structure is correctly named?
The fractional distillation of petroleum produces a series of fractions with different uses.
Which row identifies a use for a fraction?
fraction use A bitumen jet fuel B gas oil cooking C kerosene making roads D naphtha making chemicalsCorrectIncorrect
Ethene and propene are both members of the same homologous series.
Which statements explain why ethene and propene have similar chemical properties?
- They are both hydrocarbons.
- They are both made by cracking.
- They have the same functional group.
Which statement about ethane is correct?CorrectIncorrect
Which statements about ethanol are correct?
- Ethanol is used as a solvent.
- Ethanol can be made directly from ethane.
- Ethanol is a covalent compound.
Polymers are long-chain molecules made from small molecules linked together.
Four polymers or types of polymer are listed.
Which polymers or types of polymer are synthetic?CorrectIncorrect
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