Basic Science

Len Academy Examination Questions for Basic Science, JSS3, 2nd Term

len Alfred Ajibola - Tue, 26th May, 2020 @ 06:33: AM

Topics in Basic Science

Len Academy Examination Questions for Basic Science, JSS2, 2nd Term Len Academy Examination Questions for Basic Science, JSS3, 3rd Term Len Academy Examination Questions for Basic Science, JSS3, 2nd Term Primates - Characteristics of Primates Effects of Improper Waste Management Waste Management: Causes of Waste Concept of Mass and Weight Sources, Functions and Deficiencies of Mineral Salts (Macro-nutrients) Sources, Functions and Deficiencies of Mineral Salts (Micro-nutrients) Len Academy questions for Basic Science JSS1, second Term Len Academy mid-term test questions for Basic Science JSS1, 2nd Term Micro organisms causing food, water and air borne Diseases Vectors - Examples of Vectors, Vector borne Organisms and the Diseases they cause Bones of the Human Skeleton Meaning of Drugs, Type of Drugs and Side effects of Drugs Immunization, Processes involved in immunization and its importance Food: Carbohydrates and Sugars Uniqueness of Man: Unique Characteristics of Man Waste Management: Types of Waste Matter: Concept of Matter

Academic Questions in Basic Science

Please check out our Test Your Knowledge page to see all Questions and Answers

Biomedic wastes are also referred to as _____ wastes.

  • A. Hospital

  • B. Recyclable

  • C. Metabolic

  • D. Green

  • E. Radioactive

  • F. Electronic

Sweat and urine are best considered as _____ waste.

  • A. Non-Biodegradable

  • B. Refuse

  • C. Recyclable

  • D. Metabolic

  • E. Green

  • F. Radioactive

_____ is defined as the process of collecting, processing, recycling and controlling any material considered as waste.

  • A. Waste collecting and processing

  • B. Waste processing and collecting

  • C. Waste recycling and control

  • D. Waste control and recycling

  • E. Waste treatment

  • F. Waste Management

Which of the following statement is FALSE concerning mass and weight?

  • A. Mass is the amount of matter in a body

  • B. The element hydrogen has the smallest mass

  • C. You will weigh more on planet jupiter than earth

  • D. Weight is a function of gravity

  • E. Mass and Weight have different Standard International (S.I) Units

  • F. None of the above

Which of the following statement is false concerning matter?

  • A. Anything considered as matter must either have mass or occupy space

  • B. Air is an example of matter

  • C. Plasma is a state of matter

  • D. Chemistry is considered as the study of matter and the changes they undergo

  • E. Vacuum is a space completely void of matter

  • F. Matter will always take up space no matter how small or invincible it is to the eyes

Which of the following is not matter?

  • A. Atom

  • B. Molecule

  • C. Ion

  • D. Bacterium

  • E. Virus

  • F. None of the above

The ultimate source of energy is _____.

  1. Plant
  2. Sun
  3. Food
  4. Water
  5. Air
  6. Earth

The speed of wind is measured with a wind vane.




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Basic Science Questions, JSS3, Second Term:

1. _____ is a branch of a science that deals with the study of life.

  1. Biology
  2. Chemistry
  3. Physics
  4. Geography
  5. Please read this article here for correct Answer.


2. Objectives of drug usage includes the following EXCEPT _____.

  1. To combat diseases
  2. To provide energy
  3. To relieve suffering
  4. To save life
  5. Please read on the meaning of Drug, Types and Side Effects of Drugs here.


3. An element with a valency of +4 is _____.

  1. Potassium
  2. Calcium
  3. Carbon
  4. Nitrogen
  5. Please read on Periodic Table and Classification of Elements here.


4. _____ is formed when an acid is dissolved in water.

  1. H2O+
  2. OH-
  3. H3O+
  4. H2O-
  5. Please read on the Definitions of an Acid here.


5. Which of the following elements is NOT a noble gas?

  1. He
  2. Ne
  3. Be
  4. Ar


6. A damp _____ litmus paper turns _____ in NaOH.

  1. Red, Blue
  2. Blue, Red
  3. Blue, Colourless
  4. Red, Neutral
  5. You can read on the Physical and Chemical Properties of Acids here.


7. The S.I unit for electric current is the _____.

  1. Volt
  2. Ohm
  3. Ampere
  4. Watt
  5. Please read on the Fundamental Quantities and Units in Physics here.


8. The image formed in the pin-hole camera is _____.

  1. Reflected
  2. Refracted
  3. Inverted
  4. Upright


9. A chemical change will not include _____.

  1. Rotting of leaves
  2. Melting of Candle wax
  3. Corrosion of iron
  4. Burning of wood
  5. Please read on Physical and Chemical Changes here.


10. A ball with a mass of 20g rolls from a height of 8m. Calculate its kinetic energy when it has a velocity of 2ms-1.

  1. 1.6J
  2. 0.12J
  3. 0.6J
  4. 0.4J
  5. Please read on the concepts of Velocity and Acceleration here.


11. The valency of 'N' in NaNO3 is _____.

  1. -1
  2. +1
  3. -5
  4. +5

You can attempt Len Academy Questions on various Subjects (with Answers) here.

12. Myopia can be corrected with glasses that have _____ lenses.

  1. Concave
  2. Convex
  3. Irregular
  4. Regular


13. The vector of river blindness is _____.

  1. Mosquito
  2. Plasmodium
  3. Blackfly
  4. Tsetse fly
  5. Please read on Vector of Diseases, Vector Borne Organisms and the Diseases they cause here.


14. _____ atoms are present in H2SO4.

  1. 3
  2. 5
  3. 7
  4. 9
  5. Please read the concept of Molar Mass with some worked examples here.


15. The spontaneous emission of particles or rays as seen in the nucleus of certain atoms is termed _____.

  1. Nuclear Fission
  2. Nuclear Fusion
  3. Radioactivity
  4. Gamma


16. Components of Information and Communication Technology (ICT) will NOT include _____.

  1. Post Office
  2. Electronic Mail
  3. Television
  4. Internet
  5. You can read on the Internet of Things (IoT) here.


17. Certain plants are able to survive in water because _____.

  1. Their shoots are well developed
  2. They have flowers
  3. Their leaves have air spaces
  4. Their cuticle are well developed
  5. You can read on the Differences between Plants and Crops here.


18. A hormone that increases the body's metabolic function is _____.

  1. Thyroxine
  2. Aldosterone
  3. Testosterone
  4. Progesterone
  5. Please read on Homeostasis and Negative Feedback Mechanism here.


19. Rods and Cones of the eyes are concentrated in the _____.

  1. Sclera
  2. Fovea Centralis
  3. Blind Spot
  4. Cornea


20. The final bending adjustment of light into the retina is done by the _____.

  1. Lens
  2. Iris
  3. Pupil
  4. Cornea

Please read on what every Student is expected to know here.

21. A bone found in the middle ear is the _____.

  1. Stapedius
  2. Incus
  3. Patella
  4. Scaphoid
  5. Please read on all the Bones of the Human Skeleton explained with diagrams here.


22. The function of chlorine in the water purification process is to _____.

  1. Filter the water
  2. Kill micro-organisms
  3. Improve its taste
  4. Make it colourless


23. The vitamin obtained from the sun functions to _____.

  1. Prevent hypermetropia
  2. Build our skin
  3. Build our bones
  4. Prevent Myopia
  5. You can read on the Sources, Functions and Deficiencies of Macronutrients here.


24. Desertification is likely to occur in which Nigerian State?

  1. Gombe
  2. Rivers
  3. Imo
  4. Ogun
  5. Please read on the Desert Biome here.


25. The ozone layer of the atmosphere is composed of _____.

  1. O
  2. O2
  3. O3
  4. O4
  5. Please read on the Layers of the Atmosphere here.


26. The following activities of man will cause flooding EXCEPT

  1. Deforestation
  2. Availability of drainage facilities
  3. Poor farming practices
  4. None of the above
  5. You can read on Soil Erosion and Types of Soil Erosion here.


27. The energy currency in the body is _____.

  1. ATP
  2. Starch
  3. Glucose
  4. Carbohydrates
  5. Please read on the Characteristics of Living Organisms. (Answer is present here).


28. _____ is a contagious disease.

  1. Tetanus
  2. Beriberi
  3. Marasmus
  4. Tuberculosis
  5. You can read on Micro-organisms causing Food, Water and Air Borne Diseases here.


29. A petrochemical will NOT include _____.

  1. Detergent
  2. Aqueous Sodium Chloride
  3. Nylon
  4. Plastics


30. The pH value representing the most acidic solution is _____.

  1. 1.0
  2. 7.0
  3. 7.5
  4. 14.0
  5. Please read on various Agricultural Terms and Meanings. (pH is explained here).


You can Attempt Len Academy Mid-Term Test Questions for JSS1 here.

You can attempt Len Academy Basic Science Examination Questions for JSS1, 2nd Term here.

You can read various articles on Basic Science here

You can read various articles on Biology here

You can read various articles on Chemistry here

You can read various articles on Physics here

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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.

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Amazing facts in Basic Science

Sweat in itself doesn't smell. The smell that accompanies sweat is actually caused by the presence of bacteria on your skin. This bacteria breaks the sweat coming out of your sweat pores down into acids, thus making it smell.

Deodorants contains alcohol and are antibacterial. They work by killing the bacteria that makes sweat smell

Chewing aspirin during a heart attack may be a life saver. This is true because the drug inhibits platelets from forming a clot that can block an artery of the heart, thus stopping a heart attack

The kneecaps of newly born babies are not made of bone. Rather, they are little bits of cartilage which ossifies (turns from cartilages to bone) from age 2 to 6

Ice cubes made with fresh water are white in color while those made with boiled water are crystal clear

🐈 Cats 🐈 are unable to taste sweet things

🍎 Apples 🍎 actually float on water. Other fruits that float on water include 🍋 lemons, 🍌 bananas, 🍐 pears, and 🍊 oranges

Rain water contains vitamin B12.

Vitamin B12 is an important nutrient that keeps the blood cells and neurones healthy. It also assist in building the DNA (a genetic material present in the cell's nucleus). Vitamin B12 also aid in the prevention of megaloblastic anemia which makes people weak and tired

Rasceta is the name given to the lines on your ✋ palm ✋

Goats have rectangular pupils in their eyes.

Think of the pupil as a hole located in the centre of the iris within of the eye.

Note: To get an idea of an iris; 'when one is said to have blue eyes', it's because the iris is blue

Among all land animals, 🐘 Elephants 🐘 have the longest gestation period.

They stay pregnant for 22 months before giving birth to their young


Waste Management can be defined as the process of collecting, processing, recycling and controlling any material considered as waste.

Improperly disposed waste litters on road sides, in land fills, gutters and ditches. They are generally bad for the following reasons:

Wastes can be classified into various types. These are:

  • Biodegradable waste

  • Non-Biodegradable waste

  • Refuse

  • Sewage

  • Recyclable waste

  • Electronic waste

  • Green waste

  • Biomedical waste

  • Metabolic waste

  • Radioactive waste

  • Chemical waste

  • Animal product waste

Please read the explanations on the classification of wastes here

The African Star Apple is a seasonal fruit that grows abundantly in Nigeria and other West African Countries. It's fondly called African Cherry, Agbalumo or Udara in some parts of Nigeria.

African Star Apple, Cherry, Agbalumo, Udara - Len Academy

Below are some benefits of the African Star Apple:

  • It contains high amount of vitamin C

  • It contains a high amount of calcium

  • It contains high amount of potassium

  • It is a powerful antioxidant

  • It aids in weight reduction

  • It contains a high amount of iron

  • Its leaves, fruits and seeds are medicinal

  • It aids digestion and prevents vomiting

Please read more on the African Star Apple here

Disaccharides are composed of two monosaccharides joined together; thus are also referred to as double sugars.

Disaccharides are often added as sweeteners to food; for instance, the table sugar called sucrose is a disaccharide often used by us to sweeten our tea.

Maltose is another disaccharide used as an ingredient for making malt drinks, chocolates and candies.

The breast milk contains the disaccharide Lactose.

Lactose is very vital for the normal growth and development of infants.

In adults, disaccharides are non essential nutrients. This implies that we can live without them as adults.

Below is a summary of monosaccharides that make up disaccharides (double sugars).

  • Maltose = Glucose + Glucose

  • Lactose = Glucose + Galactose

  • Sucrose = Glucose + Fructose

Other examples of disaccharides include trehalulose and isomaltulose

Polysaccharides are complex sugars. These are what we often eat whenever we eat carbohydrates.

We have four types of polysaccharides namely:

  1. Starch
  2. Glycogen
  3. Chitin
  4. Cellulose


  • Starchy foods include rice, cassava and yam.

  • Glycogen is stored in the human liver; as a result of the joining of many glucose molecules.

  • Chitin is a major component of insect and anthropod's skeleton.

  • Cellulose is a major component of a plant's cell wall. They cannot be digested when eaten by humans; hence they function as roughages.

Roughages are not classified as one the classes of food in humans. This is due to the fact that they aren't digested. They will rather facilitate the movement of bowels in the large intestine (colon); and for this reason, they can be very useful in treating constipation.

Please read more on carbohydrates here