2025 NECO Mathematics Past Questions

In the electrical method of making a magnet, the polar the magnet formed depends on the

1. A.amount of current passed✓ Correct
2. B.direction of the current
3. C.nature of the material used
4. D.orientation of the magnetic material in space
5. E.size of the magnetic material

The following acids are monobasic EXCEPT

1. A.dioxonitrate (Ill) acid
2. B.ethanedioic acid
3. C.hydrobromic acid✓ Correct
4. D.methanoic acid
5. E.oxochlorate (I) acid

The arbitrary creation of constituencies by the government to favour its party is termed

1. A.A. boundary adjustment✓ Correct
2. B.B. gerrymandering
3. C.C. parliamentary whip
4. D.D. plebiscite
5. E.E. referendum

Over-grazing encourages soil

1. A.acidity
2. B.conservation
3. C.erosion
4. D.fertility✓ Correct
5. E.formation

Which of the following is NOT a natural method of birth control?

1. A.Abstaining from sex✓ Correct
2. B.Prolonged breast feeding
3. C.Rhythm method
4. D.Use of condom
5. E.Withdrawal method

Which statement is NOT true about the composition of starch?

1. A.It contains only the atoms of carbon, hydrogen oxygen
2. B.It is a polysaccharide
3. C.Its empirical formula is C2H20.
4. D.It is made from the monomerC6H12O6.✓ Correct
5. E.The hydrogen and oxygen atoms are in the ratio 2:1.

The vector of trypanosome is the

1. A.black fly
2. B.cockroach
3. C.house –fly
4. D.mosquito✓ Correct
5. E.Tsetse fly

An element Z has a combining power of 3. Which of the following formulae is correct of its compound?

1. A.ZS3
2. B.ZSO3
3. C.ZS04✓ Correct
4. D.Z203
5. E.Z3Cl2

Individuals who buy new shares in anticipation of reselling at higher prices in the stock exchange market are called

1. A.A. bears
2. B.B. brokers
3. C.C. bulls
4. D.D. jobbers✓ Correct
5. E.E. stags

Which is a morphological variation

1. A.Ability to taste PTC✓ Correct
2. B.Ability to roll the tongue
3. C.Behaviour
4. D.Blood group
5. E.Finger print