JAMB CBT PRACTICE TEST

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BIOLOGY LESSON NOTE ON HUMAN KIDNEY

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Lesson Note on the Human Kidney Topic: The Human Kidney Duration: 40 minutes Specific Objectives: By the end of the lesson, students should be able to: Define the kidney and state its location in the human body. Identify and describe the structure and functions of the kidney. Explain the processes involved in urine formation (filtration, reabsorption, and secretion). Describe how the kidney contributes to homeostasis. Identify common kidney-related diseases and how to prevent them. Evaluate the importance of maintaining kidney health. Lesson Content: 1. Introduction to the Human Kidney The kidneys are vital organs in the human body responsible for filtering waste from the blood and regulating water and electrolyte balance. They are part of the excretory system and play a crucial role in homeostasis. Location: The kidneys are located in the abdominal cavity, on either side of the spine, just below the rib cage. Each kidney is bean-shaped and about the size of a fi...
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NECO Mathematics Past Questions and Answers

 

Introduction

Mathematics is a compulsory subject in the NECO Senior School Certificate Examination (SSCE). It covers topics such as number bases, algebra, geometry, trigonometry, mensuration, statistics, probability, and commercial arithmetic. Consistent practice of past questions helps students improve speed, accuracy, and confidence before the examination. The questions below are designed to reflect NECO standards and provide effective revision for candidates preparing for the examination.

OBJECTIVE QUESTIONS

Instruction: Choose the correct option A–D.

1–25: Number and Algebra

  1. Evaluate 18 ÷ 3 × 2.
    A. 6 B. 12 C. 9 D. 15
    Answer: B

  2. Solve: 3x + 5 = 20.
    A. 5 B. 6 C. 4 D. 7
    Answer: A

  3. Find the value of 7².
    A. 42 B. 56 C. 49 D. 64
    Answer: C

  4. The HCF of 18 and 24 is
    A. 4 B. 8 C. 12 D. 6
    Answer: D

  5. Express 0.25 as a fraction.
    A. 1/4 B. 1/2 C. 1/5 D. 3/4
    Answer: A

  6. Evaluate 2³ × 2².
    A. 16 B. 32 C. 64 D. 8
    Answer: B

  7. Solve: x − 7 = 12.
    A. 18 B. 17 C. 19 D. 20
    Answer: C

  8. The LCM of 8 and 12 is
    A. 24 B. 48 C. 36 D. 12
    Answer: A

  9. Simplify 5x + 2x − 3x.
    A. 2x B. 3x C. 4x D. 5x
    Answer: C

  10. Find the square root of 225.
    A. 12 B. 15 C. 18 D. 20
    Answer: B

  11. Convert 40% to a fraction.
    A. 1/5 B. 2/3 C. 2/5 D. 4/5
    Answer: C

  12. Evaluate 4² − 3².
    A. 7 B. 9 C. 8 D. 16
    Answer: A

  13. Solve: 5x = 35.
    A. 6 B. 7 C. 8 D. 9
    Answer: B

  14. If y = 4 and x = 5, find xy.
    A. 25 B. 15 C. 20 D. 30
    Answer: C

  15. The cube of 4 is
    A. 16 B. 64 C. 32 D. 48
    Answer: B

  16. Find the value of 3(2 + 5).
    A. 21 B. 18 C. 24 D. 15
    Answer: A

  17. Solve: x/5 = 8.
    A. 35 B. 45 C. 50 D. 40
    Answer: D

  18. Express 3/4 as a percentage.
    A. 65% B. 70% C. 75% D. 80%
    Answer: C

  19. Find the next term: 2, 5, 8, 11, ?
    A. 13 B. 14 C. 15 D. 16
    Answer: B

  20. Evaluate 6².
    A. 42 B. 30 C. 36 D. 48
    Answer: C

  21. Solve: 2x + 4 = 18.
    A. 7 B. 6 C. 9 D. 8
    Answer: A

  22. The reciprocal of 5 is
    A. 5 B. 1/5 C. 1/2 D. 5/2
    Answer: B

  23. Find the value of 12².
    A. 124 B. 132 C. 144 D. 156
    Answer: C

  24. The prime number among the following is
    A. 15 B. 21 C. 27 D. 13
    Answer: D

  25. Evaluate 15% of 200.
    A. 20 B. 25 C. 30 D. 35
    Answer: C

26–50: Geometry and Mensuration

  1. The sum of angles in a triangle is
    A. 180° B. 90° C. 270° D. 360°
    Answer: A

  2. A right angle measures
    A. 180° B. 45° C. 90° D. 60°
    Answer: C

  3. Area of a rectangle =
    A. l × b B. 2(l + b) C. l² D. b²
    Answer: A

  4. Perimeter of a square of side 8 cm is
    A. 16 cm B. 24 cm C. 32 cm D. 64 cm
    Answer: C

  5. The circumference of a circle is
    A. πr² B. 2πr C. r² D. πd²
    Answer: B

  6. Area of a circle is
    A. πr² B. 2πr C. πd D. 4πr
    Answer: A

  7. A straight angle is
    A. 90° B. 360° C. 180° D. 270°
    Answer: C

  8. The sum of angles in a quadrilateral is
    A. 180° B. 270° C. 360° D. 540°
    Answer: C

  9. Volume of a cube of side 3 cm is
    A. 9 cm³ B. 18 cm³ C. 21 cm³ D. 27 cm³
    Answer: D

  10. A polygon with 8 sides is called
    A. Pentagon B. Hexagon C. Heptagon D. Octagon
    Answer: D

  11. The diameter is ___ the radius.
    A. half B. twice C. three times D. four times
    Answer: B

  12. Area of a triangle =
    A. bh B. 2bh C. ½bh D. b + h
    Answer: C

  13. The angle in a semicircle is
    A. 90° B. 180° C. 45° D. 360°
    Answer: A

  14. The exterior angle of a regular hexagon is
    A. 45° B. 60° C. 90° D. 120°
    Answer: B

  15. The diagonal of a square divides it into
    A. 4 triangles B. 3 triangles C. 2 triangles D. 5 triangles
    Answer: C

  16. Pythagoras theorem applies to
    A. Equilateral triangle B. Right-angled triangle C. Circle D. Rectangle
    Answer: B

  17. The complement of 35° is
    A. 45° B. 65° C. 55° D. 75°
    Answer: C

  18. The supplement of 70° is
    A. 100° B. 110° C. 120° D. 130°
    Answer: B

  19. Volume of a cylinder =
    A. πr²h B. 2πrh C. πrh D. πr²
    Answer: A

  20. Surface area of a sphere is
    A. πr² B. 2πr² C. 4πr² D. 6πr²
    Answer: C

  21. A triangle with all equal sides is
    A. Scalene B. Isosceles C. Equilateral D. Right-angled
    Answer: C

  22. Radius of a circle with diameter 14 cm is
    A. 14 cm B. 7 cm C. 21 cm D. 28 cm
    Answer: B

  23. A polygon with 5 sides is called
    A. Pentagon B. Hexagon C. Octagon D. Nonagon
    Answer: A

  24. Area of a square of side 9 cm is
    A. 18 cm² B. 36 cm² C. 72 cm² D. 81 cm²
    Answer: D

  25. The total angle around a point is
    A. 90° B. 180° C. 270° D. 360°
    Answer: D

51–75: Statistics and Probability

  1. Mean of 2, 4, 6, 8 is
    A. 4 B. 5 C. 6 D. 7
    Answer: B

  2. Median of 3, 5, 7, 9, 11 is
    A. 7 B. 5 C. 9 D. 6
    Answer: A

  3. Mode of 2, 3, 3, 4, 5 is
    A. 2 B. 5 C. 4 D. 3
    Answer: D

  4. Range of 5, 8, 10, 15 is
    A. 8 B. 10 C. 12 D. 15
    Answer: B

  5. Probability of obtaining a head when a coin is tossed once is
    A. 1/2 B. 1/3 C. 1 D. 0
    Answer: A

  6. A standard die has
    A. 4 faces B. 5 faces C. 6 faces D. 8 faces
    Answer: C

  7. Probability values lie between
    A. 0 and 1 B. 1 and 10 C. 0 and 100 D. -1 and 1
    Answer: A

  8. The average of 10, 20 and 30 is
    A. 15 B. 20 C. 25 D. 30
    Answer: B

  9. The graphical representation using bars is called
    A. Pie chart B. Histogram C. Bar chart D. Line graph
    Answer: C

  10. The probability of an impossible event is
    A. 0 B. 1 C. 2 D. ½
    Answer: A

  11. The probability of a certain event is
    A. 0 B. ½ C. 2 D. 1
    Answer: D

  12. A pie chart represents data using
    A. circles B. sectors C. bars D. lines
    Answer: B

  13. The range is calculated as
    A. Lowest − Highest B. Highest + Lowest C. Highest − Lowest D. Sum ÷ Number
    Answer: C

  14. The median is the
    A. highest value B. lowest value C. most frequent value D. middle value
    Answer: D

  15. The mode is the
    A. most frequent value B. average value C. middle value D. largest value
    Answer: A

  16. Mean of 5, 5, 5, 5 is
    A. 20 B. 5 C. 10 D. 0
    Answer: B

  17. If a die is rolled, the probability of getting 6 is
    A. 1/6 B. 1/3 C. 1/2 D. 1
    Answer: A

  18. A histogram is used for
    A. continuous data B. pictures C. maps D. words
    Answer: A

  19. Statistics deals with
    A. farming B. collection and analysis of data C. trading D. transport
    Answer: B

  20. A tally chart is used for
    A. recording frequencies B. geometry C. algebra D. trigonometry
    Answer: A

  21. The mean of 6 and 10 is
    A. 7 B. 8 C. 9 D. 10
    Answer: B

  22. Probability of drawing a king from 52 cards is
    A. 1/13 B. 1/52 C. 4/13 D. 1/4
    Answer: A

  23. The frequency is the
    A. total value B. number of occurrences C. average value D. range
    Answer: B

  24. The median of 1, 2, 3, 4, 5 is
    A. 2 B. 4 C. 3 D. 1
    Answer: C

  25. A line graph is useful for showing
    A. trends over time B. angles C. fractions D. equations
    Answer: A

76–100: Mixed Revision

  1. Evaluate 9 × 8.
    A. 64 B. 81 C. 72 D. 54
    Answer: C

  2. Solve: 4x = 28.
    A. 5 B. 6 C. 7 D. 8
    Answer: C

  3. Find 25% of 80.
    A. 15 B. 20 C. 25 D. 30
    Answer: B

  4. The value of π correct to two decimal places is
    A. 3.41 B. 3.24 C. 3.14 D. 3.04
    Answer: C

  5. Cube root of 125 is
    A. 3 B. 4 C. 5 D. 6
    Answer: C

  6. 10% of ₦500 equals
    A. ₦25 B. ₦50 C. ₦100 D. ₦150
    Answer: B

  7. The next term in 3, 6, 9, 12 is
    A. 14 B. 15 C. 16 D. 18
    Answer: B

  8. Evaluate 15².
    A. 125 B. 215 C. 225 D. 235
    Answer: C

  9. Solve: x + 15 = 40.
    A. 20 B. 25 C. 30 D. 35
    Answer: B

  10. 1 kilometre equals
    A. 100 m B. 1000 m C. 10000 m D. 10 m
    Answer: B

  11. A dozen equals
    A. 10 B. 11 C. 12 D. 13
    Answer: C

  12. Evaluate 100 ÷ 4.
    A. 20 B. 25 C. 30 D. 40
    Answer: B

  13. Find the value of 11².
    A. 111 B. 121 C. 131 D. 141
    Answer: B

  14. Solve: 7x = 49.
    A. 5 B. 6 C. 7 D. 8
    Answer: C

  15. The Roman numeral X represents
    A. 5 B. 10 C. 50 D. 100
    Answer: B

  16. Half of 3/4 is
    A. 3/8 B. 1/4 C. 1/2 D. 2/3
    Answer: A

  17. The value of 2⁵ is
    A. 16 B. 24 C. 32 D. 64
    Answer: C

  18. A leap year has
    A. 364 days B. 365 days C. 366 days D. 367 days
    Answer: C

  19. The fraction equivalent to 0.5 is
    A. 1/2 B. 1/3 C. 1/4 D. 3/4
    Answer: A

  20. The opposite of positive 8 is
    A. 0 B. -8 C. 8 D. 16
    Answer: B

  21. Evaluate 14 + 16.
    A. 28 B. 29 C. 30 D. 31
    Answer: C

  22. The product of 9 and 9 is
    A. 72 B. 81 C. 90 D. 99
    Answer: B

  23. Solve: 2x = 50.
    A. 20 B. 22 C. 24 D. 25
    Answer: D

  24. A score equals
    A. 10 B. 15 C. 20 D. 25
    Answer: C

  25. The value of 50 ÷ 5 is
    A. 5 B. 10 C. 15 D. 20
    Answer: B

EXAM SUCCESS TIPS

  • Study the NECO Mathematics syllabus thoroughly.
  • Practice past questions regularly.
  • Master formulas in algebra, geometry, and mensuration.
  • Learn shortcuts for percentages and ratios.
  • Improve your speed and accuracy.
  • Revise statistics and probability frequently.
  • Attempt easier questions first during the exam.
  • Check your calculations before submitting.
  • Practice CBT-style questions regularly.
  • Stay confident and manage your time effectively.

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