2022 NECO Chemistry Past Questions

The inability of the eye to focus near objects is known as

1. A.astigmatism
2. B.eye ring
3. C.hypermatropia
4. D.myopia✓ Correct
5. E.presbyopia

A projectile attains its maximum height when the angle of projection is?

1. A.30°
2. B.45°
3. C.60°
4. D.75°✓ Correct
5. E.90°

Mohammed is 8 years older than Joy now. In five years’ time he will be twice as old as Joy. How old is Joy now?

1. A.1$\frac{1}{2}$years
2. B.3years
3. C.4$\frac{1}{2}$years
4. D.6 years✓ Correct
5. E.8 years

Choose from the options lettered A - E the one that most appropriately completes each sentence Olu has returned the pencil he________him.

1. A.handed
2. B.borrowed✓ Correct
3. C.dashed
4. D.lent
5. E.given

A stone is dropped from the top of a tower of height 11 .25m. Calculate the time it will take to reach the ground. [g = 10$ms^{-2}$]

1. A.1.00s
2. B.1.50s
3. C.2.25s✓ Correct
4. D.2.50s
5. E.3.00s

If the volume of a gas at 35°C is 60cm3, what would be its volume in cm3 at 273k?

1. A.39.03
2. B.46.81✓ Correct
3. C.53.18
4. D.67.69
5. E.76.92

What is the volume of a cube if the diagonal of one of the sides is $\sqrt{50}$cm?

1. A.7.07cm$^3$
2. B.50.0cm$^3$✓ Correct
3. C.125.0cm$^3$
4. D.353.4cm$^3$
5. E.625.0cm$^3$

The charge of an alpha particle can be neutralized by

1. A.1 beta particle
2. B.2 photons of gamma rays
3. C.2 beta particles✓ Correct
4. D.4 beta particles
5. E.4 photons of gamma rays

An electric heater takes 4A when operated on a 250V supply. What is the cost of the electricity consumed at 10k per kWh when the heater is used for 5 hours?

1. A.10k✓ Correct
2. B.50k
3. C.N1.00
4. D.N5.00
5. E.N10.00

Two angles of a triangle are 45º each and its longest side is 12cm. Find the length of one of the other sides

1. A.12cm✓ Correct
2. B.9$\sqrt{2}$cm
3. C.6$\sqrt{2}$cm
4. D.6cm
5. E.3$\sqrt{2}$cm