Teechaa Worker

Background AI question generation and question diagrams. A second AI answers every new question on its own; when it agrees with the stored answer the question goes live, otherwise it waits here for you.

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Set (model gpt-4o-mini)
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Every 30 min, 50 questions per batch
Question diagrams
Up to 6 per batch, drawn by gpt-4o-mini, answer-checked by gpt-4o-mini, served from https://questions.teechaa.com/question_images

New questions

7283AI questions in bank

324awaiting review

SS3 / Commercenext batch (1 of 83 class/subject pairs in your bank)

2026-10-03 22:12:06 UTClast successful batch

AI questions for subjects a class doesn't take: from before generation was limited to the subjects in your question bank. They also make those subjects appear in the app's subject pickers for that class.

JSS1 Physics (30 draft) · JSS1 Chemistry (30 draft)

Going live

6721approved and live

207held for you to decide

0older drafts still to check (60 per run)

0deleted by you

Held questions: the checker didn't reach the stored answer, or found a problem. Green = stored answer, underlined = checker's pick. Approve if the stored answer is right, otherwise delete. Showing the latest 30 of 207.

#43956 · SS2 MathematicsWhat is the volume of a cone with radius 2 cm and height 6 cm?

A) ⅔π cm³
B) 4π cm³
C) 12π cm³
D) 2π cm³

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43948 · SS2 MathematicsFind the height of a tree if its shadow is 10 m long and the angle of elevation is 30°.

A) 5 m
B) 10 m
C) √3 m
D) 10√3 m

Stored answer A · checker said D · Checker chose D, stored answer is A.

#43941 · SS2 MathematicsIf ₦200 is invested at 5% simple interest for 2 years, what is the total amount?

A) ₦210
B) ₦220
C) ₦200
D) ₦205

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43843 · SS2 Further MathematicsFind the area under y = x from x = 1 to x = 4.

A) 4.5
B) 5
C) 6
D) 7

Stored answer A · checker said C · Checker chose C, stored answer is A.

#43841 · SS2 Further MathematicsSolve the inequality x² - 4 < 0.

A) -2 < x < 2
B) x < -2 or x > 2
C) x > -2 and x < 2
D) x ≤ -2 or x ≥ 2

Stored answer A · checker said C · Checker chose C, stored answer is A.

#43834 · SS2 Further MathematicsWhat is the sum of the first 5 terms of the series 2, 5, 8, ...?

A) 50
B) 45
C) 40
D) 35

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43833 · SS2 Further MathematicsIf a card is drawn from a deck, what is the probability it is a queen?

A) 1/13
B) 1/52
C) 1/26
D) 1/4

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43819 · SS2 Further MathematicsWhat is the 5th term of the arithmetic sequence 3, 7, 11, ...?

A) 15
B) 16
C) 14
D) 12

Stored answer A · checker said C · Checker chose C, stored answer is A.

#43816 · SS2 Further MathematicsCalculate the area under the curve y = x² from x = 0 to x = 3.

A) 9
B) 6
C) 4.5
D) 3

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43795 · SS2 English LanguageWhat is the purpose of a counterargument in an argumentative essay?

A) To strengthen your argument
B) To confuse the reader
C) To show different opinions
D) To conclude the essay

Stored answer A · checker said C · Checker chose C, stored answer is A.

#43775 · SS2 EconomicsHow do commercial banks create money?

A) By issuing bonds
B) Through customer deposits
C) By lending to businesses
D) By selling stocks

Stored answer C · checker said B · Checker chose B, stored answer is C.

#43643 · SS2 ChemistryWhat is the general formula for alkanes?

A) CₙH₂ₙ₊₁
B) CₙH₂ₙ
C) CₙH₂ₙ₋₂
D) CₙH₂ₙ₊₂

Stored answer D · checker said A · Checker chose A, stored answer is D.

#43515 · SS1 PhysicsIf a runner completes a 400 m lap in 50 seconds, what is their average velocity?

A) 8 m/s
B) 10 m/s
C) 12 m/s
D) 20 m/s

Stored answer B · checker said A · Checker chose A, stored answer is B.

#43514 · SS1 PhysicsWhat is the average speed if a car travels 150 km in 3 hours?

A) 50 km/h
B) 60 km/h
C) 70 km/h
D) 80 km/h

Stored answer B · checker said A · Checker chose A, stored answer is B.

#43503 · SS1 PhysicsWhat is the coefficient of friction if a force of 30 N is needed to move a 200 N object?

A) 0.15
B) 0.20
C) 0.25
D) 0.30

Stored answer B · checker said C · Checker chose C, stored answer is B.

#43490 · SS1 MathematicsIf z varies jointly with x and y, and z = 24 when x = 2 and y = 3, what is z when x = 4 and y = 6?

A) 48
B) 36
C) 60
D) 72

Stored answer A · checker said D · Checker chose D, stored answer is A.

#43479 · SS1 MathematicsWhat is the bearing of point B from point A if B is directly east of A?

A) 90°
B) 180°
C) 0°
D) 270°

Stored answer A · checker said C · Checker chose C, stored answer is A.

#43478 · SS1 MathematicsIf a car travels 120.5 km in 1.75 hours, estimate the speed in km/h. What is the approximate speed?

A) 69 km/h
B) 72 km/h
C) 70 km/h
D) 75 km/h

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43475 · SS1 MathematicsIf x = 3, what is the value of (2x² + 3x)/(x - 2)?

A) 21
B) 15
C) 18
D) 12

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43457 · SS1 MarketingWhich factor influences consumer purchasing decisions?

A) Color of the product
B) Price only
C) Brand name only
D) Product features only

Stored answer A · checker said X · More than one option could influence purchasing decisions.

#43404 · SS1 GovernmentWhich political structure was common in pre-colonial Nigeria?

A) Centralized kingdoms
B) Decentralized clans
C) Democratic assemblies
D) Federal unions

Stored answer B · checker said A · Checker chose A, stored answer is B.

#43323 · SS1 Further MathematicsIf y varies directly as x² and y = 8 when x = 2, what is y when x = 4?

A) 32
B) 16
C) 64
D) 4

Stored answer A · checker said C · Checker chose C, stored answer is A.

#43320 · SS1 Further MathematicsFind the height of a triangle with base 10 m and area 20 m².

A) 4 m
B) 5 m
C) 6 m
D) 2 m

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43313 · SS1 Further MathematicsSolve for x and y: 3x + 4y = 10 and 2x - y = 1.

A) x = 2, y = 1
B) x = 1, y = 2
C) x = 0, y = 2.5
D) x = 3, y = 0

Stored answer A · checker said B · Checker chose B, stored answer is A.

#43262 · SS1 English LanguageWhich statement best reflects the author's tone in the passage?

A) Optimistic and hopeful.
B) Sarcastic and critical.
C) Neutral and factual.
D) Joyful and celebratory.

Stored answer B · checker said X · The question refers to a passage that is not provided.

#43261 · SS1 English LanguageWhat can be inferred from the text about the character's feelings?

A) They are happy and content.
B) They are confused and lost.
C) They feel betrayed and angry.
D) They are indifferent to events.

Stored answer C · checker said X · The question refers to a text that is not provided.

#43098 · SS1 Civic EducationWhat type of government is characterized by a single ruler?

A) Democracy
B) Oligarchy
C) Monarchy
D) Dictatorship

Stored answer D · checker said C · Checker chose C, stored answer is D.

#43018 · SS1 BiologyWhich domain includes all prokaryotic organisms?

A) Eukarya
B) Bacteria
C) Archaea
D) Plantae

Stored answer B · checker said X · The question is ambiguous as it could be interpreted to include both Bacteria and Archaea as prokaryotic domains.

#42870 · JSS3 MathematicsSimplify the expression 3(x + 4) - 2(x - 1).

A) x + 14
B) x + 10
C) x + 12
D) x + 8

Stored answer B · checker said A · Checker chose A, stored answer is B.

#42764 · JSS3 Computer ScienceWhich of the following is a programming language?

A) HTML
B) CSS
C) JavaScript
D) All of the above

Stored answer D · checker said C · Checker chose C, stored answer is D.

Diagrams on new questions

**#40189 · JSS3 Mathematics**How do you construct a locus of points equidistant from a point?

**#37785 · SS1 Computer Science**What does a diamond shape represent in a flowchart?

Diagrams for old questions

0diagrams added

0still to look at

56no diagram needed / can't be drawn

1failed (retried up to 3×)

Recent runs

Started	Trigger	Status	Class / subject	Qs	Details
2026-10-03 22:38:34 UTC	backfill	skipped			No old questions left that need a diagram.
2026-10-03 22:33:35 UTC	backfill	skipped			No old questions left that need a diagram.
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2026-10-03 22:11:34 UTC	timer	success	SS3 / Civic Education	27	27 approved and live, 0 held for review. 2 duplicate(s) of existing questions skipped.
2026-10-03 22:06:34 UTC	backfill	skipped			No old questions left that need a diagram.
2026-10-03 22:01:34 UTC	backfill	skipped			No old questions left that need a diagram.
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2026-10-03 21:41:34 UTC	timer	success	SS3 / Chemistry	23	23 approved and live, 0 held for review. 4 duplicate(s) of existing questions skipped.
2026-10-03 21:40:34 UTC	backfill	skipped			No old questions left that need a diagram.
2026-10-03 21:35:34 UTC	backfill	skipped			No old questions left that need a diagram.
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2026-10-03 21:11:34 UTC	timer	success	SS3 / Biology	29	29 approved and live, 0 held for review. 3 duplicate(s) of existing questions skipped.
2026-10-03 21:08:34 UTC	backfill	skipped			No old questions left that need a diagram.
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