20 SS1 third term Chemistry questions with options and answers:
Question: What is the chemical formula for sulfuric acid?
A) HCl
B) H2SO4
C) NaOH
D) HNO3
Answer: B) H2SO4
Question: Which gas is released during the process of respiration in humans?
A) Carbon dioxide
B) Oxygen
C) Nitrogen
D) Hydrogen
Answer: A) Carbon dioxide
Question: What is the common name for ethanoic acid?
A) Vinegar
B) Lemon juice
C) Milk
D) Bleach
Answer: A) Vinegar
Question: Which element is present in all organic compounds?
A) Carbon
B) Oxygen
C) Nitrogen
D) Hydrogen
Answer: A) Carbon
Question: What is the chemical symbol for potassium hydroxide?
A) KOH
B) KCl
C) NaOH
D) HCl
Answer: A) KOH
Question: What is the process of converting a liquid to a gas called?
A) Sublimation
B) Condensation
C) Vaporization
D) Evaporation
Answer: D) Evaporation
Question: Which gas is responsible for the “pop” sound in a squeaky toy?
A) Oxygen
B) Helium
C) Hydrogen
D) Nitrogen
Answer: B) Helium
Question: What is the chemical formula for table sugar (sucrose)?
A) C6H12O6
B) CH4
C) CO2
D) C12H22O11
Answer: D) C12H22O11
Question: What is the chemical symbol for neon?
A) Ne
B) Na
C) Ni
D) Nb
Answer: A) Ne
Question: Which gas is commonly used in balloons for buoyancy?
A) Oxygen
B) Nitrogen
C) Helium
D) Hydrogen
Answer: C) Helium
Question: What is the chemical formula for carbon dioxide?
A) CO
B) CO2
C) C2O
D) CH4
Answer: B) CO2
Question: Which of the following is a transition metal?
A) Sodium
B) Iron
C) Chlorine
D) Potassium
Answer: B) Iron
Question: What is the chemical symbol for iodine?
A) Io
B) In
C) Ir
D) I
Answer: D) I
Question: In a chemical reaction, what are the substances that undergo change called?
A) Elements
B) Compounds
C) Reactants
D) Products
Answer: C) Reactants
Question: What is the chemical formula for hydrofluoric acid?
A) HF
B) HCl
C) H2SO4
D) HNO3
Answer: A) HF
Question: Which gas is responsible for the color and smell of rotten fruits?
A) Oxygen
B) Ethene
C) Methane
D) Hydrogen
Answer: B) Ethene
Question: What is the chemical symbol for manganese?
A) Mg
B) Mn
C) Mo
D) Na
Answer: B) Mn
Question: What is the SI unit of pressure?
A) Pascal (Pa)
B) Newton (N)
C) Joule (J)
D) Watt (W)
Answer: A) Pascal (Pa)
Question: Which element is a halogen and is commonly used in disinfectants?
A) Fluorine
B) Chlorine
C) Bromine
D) Iodine
Answer: B) Chlorine
Question: What is the chemical formula for nitric acid?
A) H2SO4
B) HCl
C) NaOH
D) HNO3
Answer: D) HNO3
FAQs
What topics are most commonly covered in SS1 Third Term Chemistry past questions?
Most SS1 Third Term Chemistry past questions focus on fundamental topics such as the states of matter, atomic structure, elements and compounds, chemical reactions, and laboratory safety. Questions often test both theoretical understanding and practical knowledge from experiments conducted during the term.
How can I effectively use past questions to prepare for my Chemistry exams?
To use past questions effectively, first review your class notes and textbooks to ensure you understand the concepts. Attempt the past questions under exam conditions, then check your answers against mark schemes or model answers. Focus on recurring topics and question formats, and practice explaining answers in clear steps.
Are there specific formulas or equations I should memorize for SS1 Third Term Chemistry exams?
Yes, students should memorize key formulas and equations such as those for calculating mass, volume, density, and basic chemical equations like neutralization, displacement, and combination reactions. Understanding when and how to apply these formulas is more important than rote memorization.
Where can I find reliable SS1 Third Term Chemistry past questions and answers?
Reliable sources include your school’s library or Chemistry department, past question compilations published by reputable exam boards, and educational websites that specialize in secondary school exam materials. Teachers and tutors can also provide guidance on which past questions are most representative of your term exams.
Also Read: SS3 First Term Chemistry Past Questions and Answers
