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Common Names and Chemical Formulas – GK Quiz with Answers – Level 2

Comparison practice on gypsum and Plaster of Paris, soda ash and washing soda, water gas and producer gas, bleaching powder and ores like galena and haematite.

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Choose Normal practice or a Simulated test.

Questions, answer key and solutions.

Questions
50
Duration
30 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 30-minute clock, a question palette and full screen, and your score, the key and the solutions arrive when you submit.

Open Normal practiceTake the Simulated test
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. 30 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 Formulas GK Practice Quiz Level 2 with Answers

Telling apart compounds that look alike, such as gypsum and Plaster of Paris or water gas and producer gas, is the skill this Level 2 GK quiz on common names and chemical formulas builds. Aptitude360 uses statement, odd-one-out, ordering and match-the-list questions here, so plain recall is not enough.

Topics in this Level 2 chemical names quiz

  • The calcium chain: quick lime to slaked lime to limestone, plus the forms of calcium carbonate
  • Gypsum, Plaster of Paris, Epsom salt and washing soda compared by their water of crystallisation
  • Soda ash versus washing soda, and baking soda's chemical name with its formula
  • Bleaching powder, milk of lime and milk of magnesia
  • Heavy water, dry ice, water gas and producer gas
  • Ores of lead, mercury, zinc, iron and copper with their formulas

Key concepts for comparison-style questions

  • Sorting compounds by their parent metal: sodium, calcium or magnesium
  • Classifying ores as oxides or sulphides
  • Identifying ores that come from the same metal, such as zinc blende and calamine
  • Recognising a mixture of gases as opposed to a single compound

Revision tips for chemical common names

  • Rank the hydrated salts by their number of water molecules and say the order aloud
  • Keep a two-column list of ore and metal, then add the formula as a third column
  • Spot the shared gas first when you compare fuel gas mixtures

Who this quiz is for

It suits General Awareness aspirants who have finished the basics and want to practise exam-style comparison questions on chemical names.

FAQs about Common Names and Chemical Formulas – GK Quiz with Answers – Level 2

What is the difference between gypsum and Plaster of Paris?
Both are forms of calcium sulphate. Gypsum has two molecules of water for each unit, while Plaster of Paris has only half a molecule of water for each unit. Plaster of Paris is made by heating gypsum.
What is the difference between water gas and producer gas?
Water gas is a mixture of carbon monoxide and hydrogen. Producer gas is a mixture of carbon monoxide and nitrogen. Carbon monoxide is present in both.
What is the chemical name of bleaching powder?
Bleaching powder is calcium oxychloride, commonly written as CaOCl2. It is a compound of calcium, not of magnesium or sodium.
What is galena chemically?
Galena is lead sulphide, with the formula PbS. It is the main ore of lead.

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 25030 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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