QAC CATEGORY B – LANDSCAPE MAINTENANCE LICENSE
EXAMINATIONQAC CATEGORY B – LANDSCAPE
MAINTENANCE
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Section 1: Sciences (Biology, Chemistry, Physics, Earth Science)
1. What is the powerhouse of the cell?
A) Nucleus
B) Ribosome
C) Mitochondria
D) Golgi apparatus
Correct Answer: C
Rationale: Mitochondria generate most of the cell's supply of adenosine
triphosphate (ATP), used as a source of chemical energy.
2. Which element is necessary for the process of photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Argon
Correct Answer: B
Rationale: Plants use carbon dioxide and water, along with sunlight, to produce
glucose and oxygen during photosynthesis.
,3. What is the hardest natural substance on Earth?
A) Gold
B) Iron
C) Diamond
D) Platinum
Correct Answer: C
Rationale: Diamond is an allotrope of carbon with a tetrahedral lattice structure,
making it exceptionally hard.
4. What is the chemical symbol for water?
A) H2O2
B) H2O
C) HO2
D) H2O3
Correct Answer: B
Rationale: A water molecule consists of two hydrogen atoms and one oxygen
atom, hence H₂O.
5. Which planet is known as the "Red Planet"?
A) Venus
B) Jupiter
C) Mars
D) Saturn
Correct Answer: C
,Rationale: Mars appears red due to iron oxide (rust) on its surface.
6. What is the largest organ in the human body?
A) Liver
B) Heart
C) Skin
D) Lungs
Correct Answer: C
Rationale: The skin is the largest organ, covering the entire external surface of the
body.
7. What is the unit of electric current?
A) Volt
B) Ohm
C) Ampere
D) Watt
Correct Answer: C
Rationale: The ampere (A) is the base unit of electric current in the International
System of Units (SI).
8. Which gas is most abundant in Earth's atmosphere?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Argon
, Correct Answer: C
Rationale: Nitrogen makes up about 78% of Earth's atmosphere.
9. What type of bond involves sharing electron pairs between atoms?
A) Ionic bond
B) Metallic bond
C) Covalent bond
D) Hydrogen bond
Correct Answer: C
Rationale: A covalent bond involves the mutual sharing of one or more pairs of
electrons between atoms.
10. What is the pH value of pure water?
A) 0
B) 7
C) 10
D) 14
Correct Answer: B
Rationale: Pure water has a neutral pH of 7, meaning it is neither acidic nor basic.
11. Which blood cells are responsible for clotting?
A) Red blood cells
B) White blood cells
C) Platelets
D) Plasma
EXAMINATIONQAC CATEGORY B – LANDSCAPE
MAINTENANCE
---
Section 1: Sciences (Biology, Chemistry, Physics, Earth Science)
1. What is the powerhouse of the cell?
A) Nucleus
B) Ribosome
C) Mitochondria
D) Golgi apparatus
Correct Answer: C
Rationale: Mitochondria generate most of the cell's supply of adenosine
triphosphate (ATP), used as a source of chemical energy.
2. Which element is necessary for the process of photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Argon
Correct Answer: B
Rationale: Plants use carbon dioxide and water, along with sunlight, to produce
glucose and oxygen during photosynthesis.
,3. What is the hardest natural substance on Earth?
A) Gold
B) Iron
C) Diamond
D) Platinum
Correct Answer: C
Rationale: Diamond is an allotrope of carbon with a tetrahedral lattice structure,
making it exceptionally hard.
4. What is the chemical symbol for water?
A) H2O2
B) H2O
C) HO2
D) H2O3
Correct Answer: B
Rationale: A water molecule consists of two hydrogen atoms and one oxygen
atom, hence H₂O.
5. Which planet is known as the "Red Planet"?
A) Venus
B) Jupiter
C) Mars
D) Saturn
Correct Answer: C
,Rationale: Mars appears red due to iron oxide (rust) on its surface.
6. What is the largest organ in the human body?
A) Liver
B) Heart
C) Skin
D) Lungs
Correct Answer: C
Rationale: The skin is the largest organ, covering the entire external surface of the
body.
7. What is the unit of electric current?
A) Volt
B) Ohm
C) Ampere
D) Watt
Correct Answer: C
Rationale: The ampere (A) is the base unit of electric current in the International
System of Units (SI).
8. Which gas is most abundant in Earth's atmosphere?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Argon
, Correct Answer: C
Rationale: Nitrogen makes up about 78% of Earth's atmosphere.
9. What type of bond involves sharing electron pairs between atoms?
A) Ionic bond
B) Metallic bond
C) Covalent bond
D) Hydrogen bond
Correct Answer: C
Rationale: A covalent bond involves the mutual sharing of one or more pairs of
electrons between atoms.
10. What is the pH value of pure water?
A) 0
B) 7
C) 10
D) 14
Correct Answer: B
Rationale: Pure water has a neutral pH of 7, meaning it is neither acidic nor basic.
11. Which blood cells are responsible for clotting?
A) Red blood cells
B) White blood cells
C) Platelets
D) Plasma
