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

NECO Mathematics is one of the core subjects required for secondary school certification in Nigeria. It covers topics such as algebra, geometry, trigonometry, statistics, and basic arithmetic operations. This set of questions is designed at NECO standard level to help students strengthen their problem-solving skills and improve exam performance through regular practice.

OBJECTIVE QUESTIONS

Instruction: Choose the correct option A–D.

1–20: Algebra & Number Theory

  1. Simplify:
    A. 4x
    B. 10x
    C. 3x
    D. 2x
    Answer: A

  2. If , evaluate
    A. 1
    B. 5
    C. 9
    D. 3
    Answer: B

  3. Solve:
    A. 6
    B. 3
    C. 4
    D. 5
    Answer: D

  4. Find the LCM of 12 and 18
    A. 24
    B. 36
    C. 18
    D. 12
    Answer: B

  5. Find the HCF of 24 and 36
    A. 6
    B. 12
    C. 18
    D. 24
    Answer: B

  6. Expand:
    A.
    B.
    C.
    D.
    Answer: B

  7. Solve:
    A. x = 1 or -1
    B. x = 3 or -3
    C. x = 2 or -2
    D. x = 4 or -4
    Answer: C

  8. If and , find x
    A. 4
    B. 5
    C. 6
    D. 8
    Answer: C

  9. Next number: 2, 6, 12, 20, ?
    A. 26
    B. 28
    C. 30
    D. 32
    Answer: B

  10. Simplify:
    A.
    B.
    C.
    D.
    Answer: C

  11. Convert 0.75 to fraction
    A.
    B.
    C.
    D.
    Answer: B

  12. log₁₀ 100 =
    A. 3
    B. 1
    C. 4
    D. 2
    Answer: D

  13. Solve:
    A. 2
    B. 4
    C. 5
    D. 3
    Answer: D

  14. Square of 15 is
    A. 205
    B. 215
    C. 225
    D. 235
    Answer: C

  15. Cube of 3 is
    A. 27
    B. 9
    C. 18
    D. 21
    Answer: A

  16. Simplify:
    A. 4x
    B. 5x
    C. 6x
    D. 7x
    Answer: C

  17. Factorize:
    A. (x - 3)(x + 3)
    B. (x - 9)(x + 1)
    C. (x - 2)(x + 2)
    D. (x - 1)(x + 9)
    Answer: A

  18. If , find
    A. 16
    B. 25
    C. 12
    D. 7
    Answer: B


  19. A. 32
    B. 16
    C. 24
    D. 64
    Answer: A

  20. Solve:
    A. 12
    B. 14
    C. 16
    D. 10
    Answer: B

21–40: Geometry & Mensuration

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

  2. Area of rectangle is
    A. 2(l + w)
    B. l × w
    C. l + w
    D. l ÷ w
    Answer: B

  3. Circumference of a circle is
    A. πr²
    B. 2πr
    C. πd²
    D. r²
    Answer: B

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

  5. Volume of cube is
    A. a²
    B. 6a²
    C. a³
    D. 2a
    Answer: C

  6. Pythagoras theorem applies to
    A. triangles
    B. circles
    C. squares
    D. rectangles
    Answer: A

  7. Hypotenuse is
    A. shortest side
    B. longest side in right triangle
    C. base only
    D. height only
    Answer: B

  8. Straight angle is
    A. 90°
    B. 360°
    C. 180°
    D. 270°
    Answer: C

  9. Complementary angles sum to
    A. 180°
    B. 360°
    C. 90°
    D. 270°
    Answer: C

  10. Supplementary angles sum to
    A. 90°
    B. 270°
    C. 360°
    D. 180°
    Answer: D

  11. Perimeter of square is
    A. a²
    B. 4a
    C. 2a
    D. 3a
    Answer: B

  12. Diagonal of square is
    A. a√2
    B. 2a
    C. a²
    D. a
    Answer: A

  13. Volume of cylinder is
    A. πr²h
    B. 2πr
    C. πr
    D. r²h
    Answer: A

  14. Surface area of sphere is
    A. 2πr
    B. 3πr²
    C. πr²
    D. 4πr²
    Answer: D

  15. Angle in semicircle is
    A. 360°
    B. 180°
    C. 45°
    D. 90°
    Answer: D

  16. Sum of angles in quadrilateral is
    A. 270°
    B. 180°
    C. 360°
    D. 90°
    Answer: C

  17. Area of triangle is
    A. bh
    B. 1/2 bh
    C. 2bh
    D. b + h
    Answer: B

  18. A 6-sided polygon is
    A. hexagon
    B. pentagon
    C. octagon
    D. triangle
    Answer: A

  19. A circle has
    A. 90°
    B. 180°
    C. 360°
    D. 270°
    Answer: C

  20. Radius is half of
    A. diameter
    B. circumference
    C. area
    D. chord
    Answer: A

41–60: Statistics & Probability

  1. Mean =
    A. sum ÷ number of values
    B. middle value
    C. highest value
    D. lowest value
    Answer: A

  2. Median is
    A. most frequent
    B. middle value
    C. sum
    D. range
    Answer: B

  3. Mode is
    A. middle value
    B. most frequent value
    C. least value
    D. sum
    Answer: B

  4. Range =
    A. max - min
    B. min - max
    C. sum
    D. product
    Answer: A

  5. Probability lies between
    A. 0 and 1
    B. 1 and 10
    C. -1 and 1
    D. 0 and 100
    Answer: A

  6. A die has
    A. 8 faces
    B. 6 faces
    C. 10 faces
    D. 4 faces
    Answer: B

  7. Probability of head in coin toss is
    A. 1/2
    B. 1/3
    C. 1
    D. 0
    Answer: A

  8. Total probability =
    A. 2
    B. 0
    C. 1
    D. 10
    Answer: C

  9. Bar chart shows
    A. words
    B. visual data
    C. letters
    D. equations
    Answer: B

  10. Histogram is for
    A. discrete data
    B. continuous data
    C. text
    D. images
    Answer: B

EXAM SUCCESS TIPS

  • Practice algebra daily
  • Master geometry formulas
  • Revise probability and statistics
  • Learn fast calculation techniques
  • Solve past NECO questions regularly
  • Avoid memorizing without understanding
  • Focus on weak topics
  • Practice CBT timing
  • Show working steps clearly
  • Stay consistent with revision

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