Chemistry
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📘 Comprehensive Syllabus & Examination Guide
Chemistry
Official curriculum roadmap, subject/topic distribution, negative marking rules, pacing guidelines, and solved sample questions.
🎯 Mapped Subjects & Topic Question Distribution
Total Question Pool
100%
38 MCQs
Combined Active Syllabus
Chemistry
38 MCQs
Topic Pool
📊 Question Pool Structure
38 MCQs across fundamental, intermediate, and advanced concept tiers.
⚡ Recommended Pacing
45 to 60 seconds per MCQ. Flag complex problems and preserve 10 minutes for final revision.
⚖️ Scoring & Negative Marking
+1 mark per correct answer. In competitive tests with negative marking, -0.25 applies for incorrect guesses.
💡 Strategic Preparation & Exam Hall Guidelines
To maximize your score on Chemistry, candidates are advised to follow a structured three-pass approach. In the First Pass, solve all direct recall and formula-based questions within 30 seconds each to secure foundational marks. In the Second Pass, tackle multi-step analytical and quantitative reasoning problems. In the Third Pass, review marked questions and verify calculations.
Practice with the interactive player below to evaluate your speed and accuracy under real exam pressure. Every question features full mathematical formulas, step-by-step worked solutions, and conceptual explanations vetted by Apex Rankers Academy subject matter specialists.
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Solved Blueprint Examples
Showing 10 solved representative questions
📝 Pre-Rendered Solved Sample Questions & Detailed Solutions
Review the solved problems below to understand question phrasing, answer choices, and step-by-step solution logic prior to starting the full interactive practice drill:
Sample Question 1
Chemistry
Easy • General Knowledge
The most abundant element in the earth’s crust is:
A
Oxygen
B
Aluminum
C
Iron
D
Silicon
✓ Correct Answer: A - Oxygen
📖 Step-by-Step Solution & Conceptual Rationale:
Oxygen is the most abundant element in the Earth's crust by mass, accounting for approximately 46.6%.
Sample Question 2
Chemistry
Easy • General Knowledge
Which one of the following is a non-metallic mineral?
A
Manganese
B
Magnesium
C
Gypsum
D
Bauxite
✓ Correct Answer: C - Gypsum
📖 Step-by-Step Solution & Conceptual Rationale:
Gypsum is a soft sulfate mineral; Manganese, Magnesium, and Bauxite are either metals or ores from which metals are extracted.
Sample Question 3
Chemistry
Easy • General Knowledge
Which... chemicals in automobile exhaust can cause cancer?
A
Carbon monoxide
B
Polycyclic hydrocarbons
C
Lead
D
Oxides of nitrogen
✓ Correct Answer: B - Polycyclic hydrocarbons
📖 Step-by-Step Solution & Conceptual Rationale:
PAHs are potent atmospheric pollutants and known carcinogens produced by the incomplete combustion of organic matter like fuel.
Sample Question 4
Chemistry
Easy • General Knowledge
Acid rain is caused by pollution of environment by:
A
Carbon dioxide and nitrogen
B
Carbon monoxide and carbon dioxide
C
Ozone and carbon dioxide
D
Nitrous oxide and sulphur dioxide
✓ Correct Answer: D - Nitrous oxide and sulphur dioxide
📖 Step-by-Step Solution & Conceptual Rationale:
These gases react with water, oxygen, and other chemicals in the atmosphere to form sulfuric and nitric acids.
Sample Question 5
Chemistry
Easy • General Knowledge
Galvanised iron is iron coated with
A
Gold
B
Silver
C
Zinc
D
None of the above
✓ Correct Answer: C - Zinc
📖 Step-by-Step Solution & Conceptual Rationale:
Galvanization is the process of applying a protective zinc coating to steel or iron to prevent rusting and corrosion.
Sample Question 6
Chemistry
Easy • General Knowledge
Sucrose on hydrolysis with dilute acids give:
A
Glucose and lactose
B
Glucose and fructose
C
Lactose and fructose
D
Glucose and galactose
✓ Correct Answer: B - Glucose and fructose
📖 Step-by-Step Solution & Conceptual Rationale:
Sucrose is a disaccharide that breaks down into its constituent monosaccharides—glucose and fructose—during hydrolysis.
Sample Question 7
Chemistry
Easy • General Knowledge
Bagasse, a by-product of sugar manufacturing industry, is used for the production of:
A
Paper
B
Alcohol
C
Confectioneries
D
Glass
✓ Correct Answer: A - Paper
📖 Step-by-Step Solution & Conceptual Rationale:
Bagasse is the dry pulpy fibrous residue that remains after sugarcane stalks are crushed, used extensively as a paper pulp source.
Sample Question 8
Chemistry
Easy • General Knowledge
Which of the following is the most stable element?
A
Hydrogen
B
Oxygen
C
Lead
D
Uranium
✓ Correct Answer: C - Lead
📖 Step-by-Step Solution & Conceptual Rationale:
Lead is the final, stable product of several radioactive decay chains, making it one of the most nuclear-stable heavy elements.
Sample Question 9
Chemistry
Easy • General Knowledge
Bauxite is:
A
Aluminum oxide \(Al_{2}O_{3}\)
B
Hydrated aluminum oxide \(Al_{2}O_{3}\)⋅x\(H_{2}O\)
C
A mixture of oxides of Al, Fe and Si
D
Aluminum fluoride AlF
✓ Correct Answer: B - Hydrated aluminum oxide \(Al_{2}O_{3}\)⋅x\(H_{2}O\)
📖 Step-by-Step Solution & Conceptual Rationale:
Bauxite is a naturally occurring heterogeneous sedimentary rock that serves as the principal ore for extracting aluminum. Chemically, its primary component consists of various aluminum hydroxide minerals (such as gibbsite, boehmite, and diaspore), which are collectively represented by the general formula for hydrated aluminum oxide.
Sample Question 10
Chemistry
Easy • General Knowledge
The group of metals Fe, Co, Ni may be best called as:
A
Alkali metals
B
Rare metals
C
Main group metals
D
Transition metals
✓ Correct Answer: D - Transition metals
📖 Step-by-Step Solution & Conceptual Rationale:
Iron (Fe), Cobalt (Co), and Nickel (Ni) are located in the d-block of the periodic table and are classic transition metals.
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