The Nigeria Agricultural Quarantine Service (NAQS) has confirmed that shortlisted candidates will sit for the Computer-Based Test (CBT) starting Thursday, 20 August 2026. With only hours remaining, every serious candidate is searching for the most probable questions.

At DeRound Table, we have carefully monitored the daily quiz giveaways posted by the official handle @NAQSng on X (Twitter), Facebook and Instagram. These quizzes consistently focus on pests, diseases, phytosanitary measures, soybean and cocoa knowledge, and the mandate of NAQS. Combined with the standard structure of federal agency aptitude tests (English, Mathematics, General Knowledge and Job-Specific Knowledge), we have compiled 100 high-probability questions and answers that are very likely to appear in tomorrow’s examination.

Study them thoroughly. Practice under timed conditions. Success favours the prepared.

Section A: Official @NAQSng Daily Quiz Questions (Directly Observed)

1. Which of the following is a common pest that can affect soybean crops?
   A. Tsetse fly
   B. Aphis glycines
   C. Fall armyworm
   D. Cocoa pod borer
   Answer: B. Aphis glycines
2. Which of the following is a major disease that affects cocoa plants?
   A. Black Pod Disease
   B. Newcastle Disease
   C. Foot-and-Mouth Disease
   D. Fall Armyworm
   Answer: A. Black Pod Disease
3. Fall Armyworm (Spodoptera frugiperda) is primarily classified as a pest of which of the following?
   A. Cereal and cash crops, particularly maize
   B. Only cocoa
   C. Only citrus
   D. Aquatic plants
   Answer: A. Cereal and cash crops, particularly maize
4. On what date was Dr. Vincent Isegbe reappointed as Comptroller General of NAQS?
   A. 13 December 2018
   B. 7 March 2024
   C. 20 August 2026
   D. 1 January 2025
   Answer: B. 7 March 2024
5. Which part of the soybean plant develops into the structure that contains the mature seeds?
   A. Root
   B. Pod
   C. Stem
   D. Leaf
   Answer: B. Pod
6. Which of the following is an important reason soybean seeds require proper storage conditions after harvest?
   A. To increase the size of the seeds
   B. To prevent deterioration and loss of seed quality
   C. To change the colour of the seeds
   D. To increase the number of seeds in a pod
   Answer: B. To prevent deterioration and loss of seed quality

Section B: NAQS Mandate, Structure & Functions

7. Under which Federal Ministry does the Nigeria Agricultural Quarantine Service operate?
   A. Federal Ministry of Environment
   B. Federal Ministry of Agriculture and Food Security
   C. Federal Ministry of Industry, Trade and Investment
   D. Federal Ministry of Health
   Answer: B
8. What is the primary mandate of NAQS?
   A. To collect taxes on agricultural exports
   B. To prevent the introduction, establishment and spread of exotic pests and diseases of plants, animals and aquatic resources
   C. To distribute fertilizers to farmers
   D. To regulate fuel prices
   Answer: B
9. In which year was the Nigeria Agricultural Quarantine Service (Establishment) Act signed into law?
   A. 1959
   B. 1997
   C. 2018
   D. 2023
   Answer: C. 2018
10. What is the official title of the head of NAQS?
    A. Managing Director
    B. Executive Secretary
    C. Comptroller-General / Director-General
    D. Permanent Secretary
    Answer: C
11. Which international convention guides plant protection and phytosanitary measures?
    A. CITES
    B. International Plant Protection Convention (IPPC)
    C. Kyoto Protocol
    D. Paris Agreement
    Answer: B
12. What does SPS stand for in international trade?
    A. Special Payment System
    B. Sanitary and Phytosanitary
    C. Standard Port Service
    D. Seed Production Scheme
    Answer: B
13. The official document issued by NAQS confirming that a consignment of plants or plant products meets international health standards is called:
    A. Bill of Lading
    B. Certificate of Origin
    C. Phytosanitary Certificate
    D. Import Permit
    Answer: C
14. ISPM 15 specifically regulates:
    A. Fresh cut flowers
    B. Wood Packaging Material (pallets, crates, dunnage)
    C. Genetically modified seeds
    D. Live animals
    Answer: B
15. NAQS was formed by the harmonisation of which three previous services?
    A. Customs, Immigration and NDLEA
    B. Plant Quarantine, Veterinary Quarantine and Fisheries/Aquatic Resources Quarantine
    C. NAFDAC, SON and CPC
    D. Police, Army and Civil Defence
    Answer: B

Section C: Pests, Diseases & Agricultural Knowledge

16. Black Pod Disease of cocoa is caused mainly by:
    A. Virus
    B. Phytophthora species (fungus)
    C. Bacteria
    D. Nematode
    Answer: B
17. Aphis glycines is commonly known as:
    A. Cotton aphid
    B. Soybean aphid
    C. Green peach aphid
    D. Cabbage aphid
    Answer: B
18. Fall Armyworm scientific name is:
    A. Spodoptera frugiperda
    B. Helicoverpa armigera
    C. Bemisia tabaci
    D. Plutella xylostella
    Answer: A
19. Which of the following is NOT a method of controlling agricultural pests?
    A. Quarantine
    B. Crop rotation
    C. Fumigation
    D. Mulching (alone is not a primary pest control method in the same category)
    Answer: D (Note: Mulching helps but is not primarily a pest control technique like the others)
20. Quarantine regulations are established mainly to:
    A. Allow importation of diseased materials
    B. Prevent the introduction of foreign diseases into the country
    C. Assist farmers to grow foreign crops only
    D. Facilitate the rapid spread of diseases
    Answer: B
21. Newcastle Disease affects which group of animals?
    A. Cattle
    B. Poultry
    C. Fish
    D. Goats
    Answer: B
22. Foot-and-Mouth Disease primarily affects:
    A. Birds
    B. Cloven-hoofed animals (cattle, sheep, goats, pigs)
    C. Fish
    D. Dogs
    Answer: B
23. Which of these is a quarantine pest of major concern to Nigeria’s maize production?
    A. Fall Armyworm
    B. Tsetse fly
    C. Cocoa pod borer
    D. Newcastle virus
    Answer: A
24. Phytosanitary measures are applied to:
    A. Only animals
    B. Plants and plant products
    C. Only processed foods
    D. Mineral resources
    Answer: B
25. The process of inspecting and certifying agricultural commodities before export is called:
    A. Taxation
    B. Quarantine inspection and certification
    C. Auctioning
    D. Subsidisation
    Answer: B

Section D: English Language & Verbal Reasoning

26. The Quarantine Officers, together with the supervisor, _____ inspected the cargo shipment.
    A. has
    B. have
    C. is
    D. was
    Answer: B
27. The minister, as well as his delegates, _____ expected to attend the agricultural conference tomorrow.
    A. is
    B. are
    C. were
    D. have been
    Answer: A
28. Identify the correctly spelled word:
    A. Quarantene
    B. Quarentine
    C. Quarantine
    D. Quarantyne
    Answer: C
29. Choose the word nearest in meaning to “Intercept”:
    A. Allow
    B. Seize or stop
    C. Ignore
    D. Promote
    Answer: B
30. Choose the word opposite in meaning to “Exotic” (as used in pest context):
    A. Foreign
    B. Indigenous / Native
    C. Dangerous
    D. Rare
    Answer: B
31. Fill in the blank: All consignments _____ be declared to NAQS at least 24 hours before departure.
    A. must
    B. may
    C. can
    D. might
    Answer: A
32. “Phytosanitary” is correctly pronounced as:
    A. fy-to-san-i-ta-ry
    B. pi-to-sani-tary
    C. phy-to-sanitary
    D. fit-o-sanitary
    Answer: C
33. Choose the correct sentence:
    A. NAQS prevent the spread of pests.
    B. NAQS prevents the spread of pests.
    C. NAQS are preventing the spread of pests always.
    D. NAQS have prevent the spread.
    Answer: B
34. Synonym of “Mandate”:
    A. Suggestion
    B. Authority or official instruction
    C. Request
    D. Opinion
    Answer: B
35. Antonym of “Introduction” (of pests):
    A. Entry
    B. Exclusion / Prevention
    C. Establishment
    D. Spread
    Answer: B

Section E: Mathematics & Quantitative Reasoning

36. A quarantine officer inspected 450 bags of imported wheat and rejected 18 bags due to pest infestation. What percentage of the bags was rejected?
    A. 3.5%
    B. 4.0%
    C. 4.5%
    D. 5.0%
    Answer: B
37. Evaluate: 15 + 3 × 4 − 12 ÷ 3
    A. 20
    B. 23
    C. 28
    D. 32
    Answer: B
38. In a pie chart representing 360 quarantine seizures, a sector measuring 90° represents timber. How many timber seizures were recorded?
    A. 45
    B. 90
    C. 120
    D. 180
    Answer: B
39. If 25% of intercepted consignments are of plant origin and 120 consignments were intercepted, how many were of plant origin?
    A. 20
    B. 30
    C. 40
    D. 50
    Answer: B
40. A NAQS officer works 8 hours a day. If he inspects 40 consignments in 5 days, how many consignments does he inspect per hour on average?
    A. 1
    B. 2
    C. 3
    D. 4
    Answer: A
41. Simple Interest on ₦50,000 at 10% per annum for 2 years is:
    A. ₦5,000
    B. ₦10,000
    C. ₦15,000
    D. ₦20,000
    Answer: B
42. Ratio of plant to animal seizures in a month is 3:2. If total seizures are 250, plant seizures are:
    A. 100
    B. 150
    C. 200
    D. 50
    Answer: B
43. A container has 1,200 bags. 15% are rejected. How many bags are accepted?
    A. 180
    B. 1,020
    C. 1,050
    D. 1,080
    Answer: B
44. Average of 5 inspection scores: 70, 80, 90, 60, 100 is:
    A. 70
    B. 80
    C. 85
    D. 90
    Answer: B
45. If the exchange rate is ₦1,600 to $1, how many dollars is ₦800,000?
    A. $400
    B. $500
    C. $600
    D. $800
    Answer: B

Section F: General Knowledge & Current Affairs

46. Who is the current Minister of Agriculture and Food Security (as of 2026)?
    A. Chief Audu Ogbeh
    B. Senator Abubakar Kyari
    C. Dr. Aliyu Sabi Abdullahi
    D. Alhaji Sabo Nanono
    Answer: B
47. Nigeria shares land borders with how many countries?
    A. 3
    B. 4
    C. 5
    D. 6
    Answer: B (Benin, Niger, Chad, Cameroon)
48. The agency responsible for ensuring federal character in recruitment is:
    A. EFCC
    B. Federal Character Commission
    C. ICPC
    D. NAFDAC
    Answer: B
49. NAQS ranked among the top three agencies in efficiency and transparency under which body?
    A. EFCC
    B. PEBEC (Presidential Enabling Business Environment Council)
    C. NIPC
    D. CBN
    Answer: B
50. The capital of Nigeria is:
    A. Lagos
    B. Abuja
    C. Port Harcourt
    D. Kano
    Answer: B
51. Which organisation sets international standards for plant health?
    A. WHO
    B. IPPC / FAO
    C. UNESCO
    D. UNICEF
    Answer: B
52. The first line of defence against exotic pests entering Nigeria is:
    A. Police
    B. NAQS
    C. Customs alone
    D. Immigration
    Answer: B
53. Wood packaging materials moving internationally must comply with:
    A. ISPM 15
    B. ISO 9001
    C. HACCP only
    D. GMP
    Answer: A
54. NAQS operates under the Federal Ministry of:
    A. Livestock Development only
    B. Agriculture and Food Security
    C. Marine and Blue Economy only
    D. Environment only
    Answer: B
55. The Act establishing NAQS as a full agency was signed in:
    A. 2017/2018
    B. 2008
    C. 1999
    D. 2020
    Answer: A

Section G: Additional High-Probability Job-Specific Questions (56–100)

56. What is the full meaning of NAQS? — Nigeria Agricultural Quarantine Service
57. Who is the current Comptroller-General of NAQS? — Dr. Vincent Isegbe
58. Primary host of soybean aphid in its life cycle is usually species of — Rhamnus (buckthorn)
59. Black Pod Disease mainly attacks which part of the cocoa plant? — Pods
60. Fall Armyworm is native to which region? — Americas (now invasive in Africa)
61. The scientific basis for quarantine decisions is called — Pest Risk Analysis (PRA)
62. Consignments meant for export must be declared to NAQS at least how many hours before departure? — 24 hours
63. Which agency collaborates closely with NAQS on chemical and pesticide regulation? — NAFDAC
64. ISPM stands for — International Standards for Phytosanitary Measures
65. The main objective of post-entry quarantine is to — Detect and contain pests that may have escaped border inspection
66. Aquatic resources quarantine covers — Fish, shellfish, ornamental fish and their products
67. Used vehicles and machinery entering Nigeria may require quarantine inspection because they can carry — Soil and pests
68. The term “exotic pest” means — A pest not native to the country
69. NAQS officers at borders perform — Inspection, interception, detention and certification
70. Mycotoxin contamination of agricultural commodities is of concern to NAQS because it affects — Food safety and trade
71. The vision of NAQS is to be Nigeria’s — Lead regulatory agency and first line of defence against exotic pests and diseases
72. Sanitary measures relate mainly to — Animal and aquatic health
73. Phytosanitary measures relate mainly to — Plant health
74. Which of these is a regulated article under NAQS? — Plants, plant products, animals, animal products, aquatic resources, biologics, wood packaging
75. Illegal importation of agricultural commodities can lead to — Interception, detention and possible destruction or return
76. The headquarters of NAQS is located in — Abuja
77. NAQS contributes to food security by — Protecting the agricultural economy from exotic pests and diseases
78. International trade facilitation is achieved by NAQS through — Issuance of phytosanitary and sanitary certificates
79. Crop rotation helps in pest control by — Breaking the life cycle of pests
80. Fumigation is a method of — Pest control using chemicals in gaseous form
81. The presence of sooty mould on soybean is often associated with — Honeydew from aphids
82. Which of the following is NOT under NAQS mandate? — Collection of import duties (that is Customs)
83. Paramilitary status was conferred on NAQS by the — 2018 Establishment Act
84. Dr. Vincent Isegbe was first appointed pioneer DG/CG in — December 2018
85. Reappointment of the CG is for a period of — Five years (renewable)
86. NAQS works with which ministry on endangered species certification? — Federal Ministry of Environment
87. The correct spelling of the disease that affects cocoa pods is — Black Pod Disease
88. Aphis glycines belongs to the family — Aphididae
89. Spodoptera frugiperda belongs to the order — Lepidoptera
90. The best way to prepare for NAQS CBT is to — Study official quizzes, understand the mandate, practise English, Maths and Current Affairs
91. Entries for NAQS official quizzes submitted via DM are — Not considered
92. The official website of NAQS is — www.naqs.gov.ng
93. Recruitment portal for the ongoing exercise is — recruitment.naqs.gov.ng
94. CBT for the current recruitment holds online via the — Recruitment portal
95. Applicants are advised to rely only on information from — Official NAQS channels
96. The ultimate goal of quarantine services worldwide is — Biosecurity and protection of national agricultural resources
97. Success in the NAQS CBT depends largely on — Thorough preparation using official sources and consistent practice

Final Tips for Tomorrow’s NAQS CBT

• Arrive early / log in early if the test is online.
• Read every question carefully — many are straightforward once you understand the mandate.
• Manage your time. Do not spend too long on any single question.
• Focus on the official @NAQSng quizzes; they reveal the agency’s priority knowledge areas.
• Stay calm. You have prepared with the most relevant material available.

100 Likely NAQS CBT Questions & Answers 2026 | Tomorrow’s Exam Prep

Good luck to every shortlisted candidate! May you excel and join the team that safeguards Nigeria’s agricultural future.

Disclaimer: These questions are compiled from publicly available official quizzes by @NAQSng and standard aptitude test patterns for federal agencies. They are intended for educational and preparation purposes only. The actual questions in the CBT may differ. Always rely on official communications from NAQS.

Start with NAQS. End with Success.