2024 NECO Chemistry Past Questions

Complete this question with the most appropriate of the options lettered A – E He ............... great confidence that he would win even when his opponent seemed to be gaining the upper hand.

1. A.asserted
2. B.exerted
3. C.explored✓ Correct
4. D.expounded
5. E.exuded

A projectile fired with initial velocity, u will attain its maximum height H when the angle of projection θ is

1. A.30°✓ Correct
2. B.450°
3. C.60°
4. D.75°
5. E.90°

Find the value of x in the equation: 9$^x$ = 729

1. A.81
2. B.27
3. C.18
4. D.9✓ Correct
5. E.3

Two metals A and B lose the same quantity of heat when their temperatures drop from 20°C to 15°C. If the specific heat Capacity of A Ii thrice that of B, calculate the ratio of the mass of A to that of B.

1. A.3:01✓ Correct
2. B.4:03
3. C.3:04
4. D.1:02
5. E.1:03

Which is NOT an adaptive feature of hydrophytes?

1. A.Air spaces in tissues for buoyancy✓ Correct
2. B.Broad leaves to enhance transpiration
3. C.Extensive root system for absorption of water
4. D.Fibrous root for absorption of water
5. E.Waxy cuticle on leaves to prevent wetting

Which statement about how all life started is NOT true according to current thinking on evolutionary trends?

1. A.animals to plant life
2. B.aquatic to terrestrial forms
3. C.non-specialization to specialization in functions
4. D.simple to complex forms✓ Correct
5. E.unicellularity to multicellularity

The molar mass of a compound X is 56. its empirical formula is CH2. X is

1. A.butene.
2. B.butyne.✓ Correct
3. C.ethene.
4. D.propene.
5. E.propyne

Use the data to answer this question A class of 40 set out to determine the population of lizards in a bound field measuring 200 metres by 100 metres using the capture-recapture method. In their first outing, the students captured a total of 360 lizards all of which were marked with indelible ink and then released back into the field. After a one week interval the students went back into the field and caught a total of 250 lizards out of which 150 bore the indelible ink mark. The population density of the lizards in the field is?

1. A.0.003 per m 2
2. B.0.03 per m 2✓ Correct
3. C.3 per m 2
4. D.4 per m 2
5. E.6 per m 2

In a case of disputed paternity the most likely clue to resolving the problem is to match the ________________ of the baby with that of the father .

1. A.blood group
2. B.facial appearance✓ Correct
3. C.finger print
4. D.sex type
5. E.skin color

The speed of sound travelling in various media increases in the order:

1. A.air, iron bar, water
2. B.air, water, iron bar
3. C.iron, bar water, air
4. D.water, air, iron bar✓ Correct
5. E.water, iron bar, air