Nigerian Defence Academy (NDA) Direct Entry Past Questions and Answers

English Language

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   1. Choose the correct tense:

   By next year, she ___ here for a decade.

   1. has lived
   2. will have lived (Answer)
   3. will be living
   4. will live

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   2. Identify the grammatical error in the sentence:

   Each of the boys were given a gift.

   1. a gift
   2. Each
   3. were (Answer - Correct form: ”was”)
   4. of the boys

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   3. Choose the correct sentence:

   1. She is better than her sister. (Answer)
   2. She is more better than her sister.
   3. She is most better than her sister.
   4. She is best than her sister.

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   4. Choose the option that best completes the sentence:

   The teacher asked the students if they ___ any questions.

   1. has
   2. have
   3. had (Answer)
   4. having

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   5. Fill in the blank:

   The students, as well as the teacher, ___ present at the meeting.

   1. was (Answer)
   2. is
   3. were
   4. are

Mathematics

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   6. Find the derivative:

   If y = 4x³ − 2x + 7, find ^dy/_dx

   1. 4x² − 2
   2. 12x² − 2 (Answer)
   3. 3x² − 2
   4. 8x² − 1

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   7. Convert 1011 (base 2) to base 10.

   1. 9
   2. 10
   3. 11 (Answer)
   4. 12

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   8. Evaluate: Log⁡₁₀1000

   1. 2
   2. 3 (Answer)
   3. 10
   4. 4

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   9. Solve the following matrix equation:

   2	3
   1	4

   1. 5 (Answer)
   2. 11
   3. 8
   4. -2

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    10. Simplify: (3x²)² × x

    1. 9x⁴
    2. 6x⁵
    3. 3x⁵
    4. 9x⁵ (Answer)

Nigerian Defence Academy Direct Entry Arts Past Questions

Economics

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    11. Which of the following best describes the law of diminishing returns?

    1. Profit always increases with production
    2. Additional output decreases with more input (Answer)
    3. Cost increases with size
    4. Output increases proportionally with input

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    12. Money serves as a measure of value because:

    1. It has intrinsic value
    2. It facilitates comparison (Answer)
    3. It is visible
    4. It is durable

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    13. Which of these is a characteristic of a public good?

    1. Non-excludability (Answer)
    2. Excludability
    3. Rival consumption
    4. Private provision

Literature in English

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    14. The conflict in a drama is best described as the:

    1. Role of the narrator
    2. Struggle between opposing forces (Answer)
    3. Moral lesson of the play
    4. Climax of the story

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    15. A narrative poem that tells a story, often of heroic deeds, is called:

    1. Limerick
    2. Ode
    3. Elegy
    4. Epic (Answer)

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    16. In literature, a stock character is:

    1. The narrator of the story
    2. A character with unpredictable traits
    3. A well-developed character
    4. A stereotypical character (Answer)

Nigerian Defence Academy Direct Entry Science Past Questions

Chemistry

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    17. Which of the following is a strong acid?

    1. CH₃COOH
    2. HCl (Answer)
    3. NH₄OH
    4. H₂CO₃

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    18. A compound with molecular formula C₂H₆ is known as:

    1. Ethene
    2. Methane
    3. Ethyne
    4. Ethane (Answer)

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    19. The process by which a liquid changes to gas at the surface at any temperature is called:

    1. Boiling
    2. Evaporation (Answer)
    3. Vaporization
    4. Sublimation

Physics

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    20. A transformer has 200 turns in the primary coil and 1000 turns in the secondary coil. What is the type of transformer?

    1. Step-down
    2. Power transformer
    3. Step-up (Answer)
    4. Equal ratio

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    21. What type of lens is used to correct long-sightedness (hypermetropia)?

    1. Cylindrical
    2. Plane
    3. Convex (Answer)
    4. Concave

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    22. A body of mass 4kg moves with a velocity of 3m/s. What is its kinetic energy?

    1. 18J
    2. 6J
    3. 12J
    4. 24J (Answer)

Biology

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    23. The exchange of gases in the lungs occurs in the:

    1. Diaphragm
    2. Alveoli (Answer)
    3. Trachea
    4. Bronchi

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    24. Which of the following is a hereditary material?

    1. RNA
    2. Hormone
    3. DNA (Answer)
    4. Enzyme

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    25. The organ responsible for pumping blood in humans is the:

    1. Brain
    2. Heart (Answer)
    3. Liver
    4. Lungs

Agricultural Science

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    26. Which of these irrigation methods is most suitable for arid regions?

    1. Sprinkler irrigation
    2. Drip irrigation (Answer)
    3. Flood irrigation
    4. Surface irrigation

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    27. Which of the following diseases affects poultry?

    1. Rinderpest
    2. Anthrax
    3. Newcastle disease (Answer)
    4. Foot and mouth disease

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    28. Which of the following is a leguminous crop?

    1. Groundnut (Answer)
    2. Cassava
    3. Yam
    4. Maize

Nigerian Defence Academy Direct Entry Social Science Past Questions

Government

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    29. Which political party formed the first government in Nigeria in 1960?

    1. NCNC
    2. PRP
    3. AG
    4. NPC (Answer)

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    30. Pressure groups aim to:

    1. Replace political parties
    2. Win elections
    3. Form governments
    4. Influence government policies (Answer)

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    31. The 1979 Constitution of Nigeria adopted the:

    1. Confederal system
    2. Parliamentary system
    3. Presidential system (Answer)
    4. Westminster model

Geography

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    32. What is the main cause of desertification?

    1. Afforestation
    2. Earthquake
    3. Deforestation (Answer)
    4. Tsunami

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    33. The scale of a map that shows very large details is called:

    1. Verbal scale
    2. Small scale
    3. Medium scale
    4. Large scale (Answer)

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    34. The type of rainfall associated with mountainous regions is:

    1. Convectional rainfall
    2. Equatorial rainfall
    3. Cyclonic rainfall
    4. Relief rainfall (Answer)