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Chemical Bonding and Reactions – GK Quiz with Answers – Level 3

Hard chemistry GK on conductivity of ionic compounds, redox pairs, corrosion, rancidity, reaction types and how silver chloride breaks down in sunlight for photography.

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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
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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

Chemical Bonding GK Practice Quiz Level 3: Redox, Corrosion and Photolysis

Learners at the final revision stage of chemistry GK will gain most from this set. The Level 3 Chemical Bonding and Reactions quiz on Aptitude360 covers ionic and covalent compounds, redox, corrosion, rancidity and the decomposition of silver chloride in sunlight. It uses multi-statement, matching and sequencing questions.

Areas examined in the Level 3 bonding set

  • Why ionic compounds conduct electricity when molten or in solution
  • Melting points of methane compared with sodium chloride
  • Classifying reactions as combination, decomposition, displacement or double displacement
  • Redox concepts, including oxidation as loss of hydrogen
  • Corrosion of iron and copper, and rancidity with its prevention
  • Silver chloride in sunlight and its use in black and white photography
  • Sequencing whitewashing steps and ionic compound formation

Concepts that trip students at this level

  • Respiration is exothermic, while decomposition reactions are generally endothermic
  • Sublimation is a physical change, not a chemical one
  • In the iron nail experiment the solution turns lighter, and it is single displacement, not an exchange of ions
  • Corrosion is not limited to iron; copper also forms a surface coating

Revision advice for advanced reaction questions

  • Judge each statement as true or false on its own before comparing options
  • Keep a reactants and products table for whitewashing and double displacement
  • Learn oxidation and reduction in both oxygen and hydrogen terms

FAQs about Chemical Bonding and Reactions – GK Quiz with Answers – Level 3

Why do ionic compounds conduct electricity only when molten or dissolved?
In the solid state the ions are held fixed in place. When melted or dissolved in water, the ions can move freely and carry current.
What happens when silver chloride is kept in sunlight?
White silver chloride decomposes into silver and chlorine and turns grey. This light-driven decomposition was used in black and white photography.
Why do molecular covalent compounds have low melting points?
In molecular covalent compounds such as methane, the forces between molecules are weak, so little energy is needed to separate them. Network covalent solids such as diamond are an exception and melt at very high temperatures.
What is the chemistry behind whitewashing?
Quick lime, or calcium oxide, reacts with water to form slaked lime, or calcium hydroxide. On the wall, slaked lime reacts with carbon dioxide in the air to form a shiny layer of calcium carbonate.

Test structure

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

SectionQuestionsTime
Chemical Bonding and Reactions 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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