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ALKANE vs ALKENE vs ALKYNE

🔹 Alkanes
• Bond: Single (C–C)
• Type: Saturated
• Formula: CₙH₂ₙ₊₂
• Reaction: Substitution
• Example: Methane (CH₄)

🔹 Alkenes
• Bond: Double (C=C)
• Type: Unsaturated
• Formula: CₙH₂ₙ
• Reaction: Addition
• Example: Ethene (C₂H₄)

🔹 Alkynes
• Bond: Triple (C≡C)
• Type: Unsaturated
• Formula: CₙH₂ₙ₋₂
• Reaction: Addition
• Example: Ethyne (C₂H₂)

📌 Frequently tested in IGCSE, WAEC, NECO, POST UTME—master the differences!

JAMB Question:
What is the pH of a neutral solution?
A. 0 B. 7 C. 14 D. 1

Put your answer in the comment section.

⚗️ Question
What is the oxidation state of sulphur in H₂SO₄?
A. +2
B. +4
C. +6
D. –2
Put your answer in the comment section.

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POST UTME/WAEC QUESTION

Which of the following best explains why noble gases are chemically unreactive?
A. They have high ionization energy
B. They have complete outer electron shells
C. They are gases at room temperature
D. They have low electron affinity

Put your answer in the comment section.

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Science & Nature &naturemoment Group 0 on the periodic table are known as noble gas, inert gas or rare gas because they complete their Octet.

Key Areas to Study for JAMB 2026
Stoichiometry Calculations: Mole concept, molar volume, and chemical equations.
Organic Chemistry: Nomenclature, isomerism, and functional groups (Alkanols, Alkanoic acids, Alkanals).
Periodic Table Trends: Ionization energy, electronegativity across periods/groups.
Separation Methods: Distillation (fractional vs. simple), chromatography.
Redox & Electrolysis: Oxidation numbers, Faraday’s Laws.
Acids and Bases: pH calculations, neutralization.
Qualitative Analysis: Identification of cations and anions.

🎬 ADVANCED JAMB 2026 CHEMISTRY (TOUGH SET)
1. Atomic Structure (Tricky)
Q: An element has electronic configuration 2, 8, 3. Its valency is:
A. 1
B. 2
C. 3 ✅
D. 5
2. Periodic Trend
Q: Which property increases down Group 1 elements?
A. Ionization energy
B. Electronegativity
C. Atomic radius ✅
D. Electron affinity
3. Chemical Bonding (Conceptual Trap)
Q: Which compound has the highest melting point?
A. CO₂
B. CH₄
C. NaCl ✅
D. NH₃
4. Gas Laws (Calculation Twist)
Q: A gas occupies 2 dm³ at 300 K. What will be its volume at 600 K (constant pressure)?
A. 2 dm³
B. 3 dm³
C. 4 dm³ ✅
D. 6 dm³
👉 Because volume ∝ temperature
5. Acids & Bases (Understanding)
Q: Which of the following is amphoteric?
A. NaOH
B. HCl
C. Al(OH)₃ ✅
D. NH₃
6. Organic Chemistry (Isomerism)
Q: How many structural isomers does C₄H₁₀ have?
A. 1
B. 2 ✅
C. 3
D. 4
7. Electrolysis (Deep Thinking)
Q: During electrolysis of CuSO₄ using copper electrodes, the blue color:
A. Fades
B. Deepens
C. Remains unchanged ✅
D. Turns colorless
8. Stoichiometry (Calculation)
Q: What mass of NaOH is needed to prepare 500 cm³ of 0.2 mol/dm³ solution?
A. 2 g
B. 4 g ✅
C. 6 g
D. 8 g
9. Redox Reaction (Trap)
Q: Identify the oxidizing agent:
Zn + Cu²⁺ → Zn²⁺ + Cu
A. Zn
B. Cu
C. Cu²⁺ ✅
D. Zn²⁺
10. Separation Technique (Concept)
Q: Which method separates a mixture of sand and ammonium chloride?
A. Filtration
B. Sublimation ✅
C. Distillation
D. Decantation
🎯 BONUS (VERY HOT JAMB TRAP 🔥)
11. Equilibrium
Q: Increasing pressure favors the side with:
A. More gas molecules
B. Fewer gas molecules ✅
C. Equal molecules
D. No effect
12. Solubility
Q: Which salt is most soluble in water?
A. NaNO₃ ✅
B. CaCO₃
C. AgCl
D. PbSO₄

🔥 JAMB 2026 CHEMISTRY QUESTION

🎯 QUESTION (Atomic Structure)
Which of the following particles has no charge?
A. Proton
B. Electron
C. Neutron
D. Ion

Drop your answer in the comment section.

🎯 JAMB 2026 Chemistry Drill: Amphoteric Oxides
Question 1
Which of the following oxides is amphoteric?
A. Na₂O
B. SO₃
C. Al₂O₃
D. CO₂

JAMB students will get this right 😳🔥