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Common Names and Chemical Formulas – GK Quiz with Answers – Level 3

Hard-level chemistry GK on common names and formulas: hydrated salts like gypsum and Plaster of Paris, ores such as cinnabar, galena and calamine, and water gas versus producer gas.

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Questions, answer key and solutions.

Questions
50
Duration
35 min
Marks
50

Negative marking

Attempts
100
Access
Free
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Normal practice, or a Simulated test

Both use the same questions. Normal practice is untimed and needs no account: choose an option and the answer and solution appear at once. The Simulated test is the real computer-based format, with one 35-minute clock, a question palette and full screen, and your score, the key and the solutions arrive when you submit.

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How the two modes differ
No account needed

Normal

Untimed

Every question on one page, loading as you scroll. Choose an option and see straight away whether it was right.

  • No timer. Nothing to start and nothing to submit. Stop whenever you like.
  • Answered as you choose. Tap an option and it is marked at once, with the correct answer shown.
  • Solutions in place. The explanation, and the video where one has been added, sit under the question.
  • Open to guests. Normal practice needs no sign-in.
Real exam conditions

Simulated

Timed CBT

The computer-based test format: one clock, a question palette, and a score the moment you submit.

  • A clock that does not pause. 35 minutes from the moment you begin, and the paper is submitted for you when it reaches zero.
  • Question palette. Answered, not answered and marked for review, section by section, as the real interface has it.
  • Full screen, proctored. The test takes over the screen; leaving it three times submits the paper.
  • Answers hidden until you submit. The key, the explanations and your score all arrive together at the end.

About this test

Common Names and Chemical Formulas GK Quiz: Ores, Salts and Fuel Gases

This Level 3 GK quiz tests the common names and chemical formulas of everyday compounds, metal ores and fuel gases, from gypsum and Plaster of Paris to cinnabar, galena and water gas. Aptitude360 builds it around statement-based, match-the-list and odd-one-out questions, with a written explanation for every question.

What this Level 3 chemistry GK set covers

  • Hydrated salts: gypsum, Plaster of Paris, washing soda and Epsom salt, and their water of crystallisation
  • Sodium compounds: caustic soda, baking soda, washing soda, soda ash and rock salt
  • Calcium compounds: quick lime, slaked lime, limestone, marble, chalk and bleaching powder
  • Ores and their metals: cinnabar, galena, zinc blende, calamine, magnetite, haematite, copper pyrites and bauxite
  • Fuel gas mixtures: water gas, also called synthesis gas, and producer gas
  • Other substances: dry ice, milk of magnesia and heavy water

Key concepts to revise for chemical common names

  • Sulphide, oxide and carbonate ores: galena, cinnabar and zinc blende are sulphides, while calamine is a carbonate
  • Hydrated and anhydrous forms: Plaster of Paris is a hemihydrate, and soda ash is washing soda without its water
  • Lime chemistry: quick lime with water gives slaked lime, which absorbs carbon dioxide to form calcium carbonate
  • Which elements a compound contains, such as chlorine in bleaching powder or deuterium in heavy water

Revision tips for ores and compound names

  • Make a table of ore, metal and formula, and note whether each ore is a sulphide, oxide or carbonate.
  • Learn the hydrated salts in increasing order of water molecules, not as isolated facts.
  • Revise look-alike names in pairs, such as caustic soda with baking soda and quick lime with slaked lime.

Who should take this chemistry GK level

Best taken after the earlier levels of this series, by students who want harder, statement-style practice in chemistry general awareness.

FAQs about Common Names and Chemical Formulas – GK Quiz with Answers – Level 3

What is the common name and chemical formula of washing soda?
Washing soda is sodium carbonate decahydrate, a hydrated form of sodium carbonate. When it loses all its water of crystallisation, the white powder left is called soda ash.
What is the chemical name of baking soda?
Baking soda is sodium hydrogencarbonate, also called sodium bicarbonate. It should not be confused with caustic soda, which is sodium hydroxide.
What is the common name of sodium hydroxide?
Sodium hydroxide, NaOH, is commonly called caustic soda. It is a strong alkali used in making soap and paper.
What is the chemical name of common salt?
Common salt is sodium chloride, NaCl. Its large natural crystal form is known as rock salt.

Test structure

How the paper is split, and how long each part runs. A section you have finished cannot be returned to.

SectionQuestionsTime
Common Names and Chemical Formulas GK Level 35035 min

Marking & rules

Total marks
50 across 50 questions.
Negative marking
A wrong answer costs marks. Leaving a question unanswered costs nothing.
Attempts
100 in total. An attempt is spent the moment you begin one.

What you get when you submit

The analysis is ready the moment you submit the paper.

Score and accuracy

Marks, percentage, right, wrong and skipped, and the time you took.

Section by section

The same figures for each section, so a weak one cannot hide in an average.

The full answer key

Every question with your answer, the right one, the working, and the video where there is one.

Where you stand

Your score against the spread of everyone else who has sat this test.

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