NECO Commerce Past Questions & CBT Practice

Vitamin K deficiency causes

1. A.constipation
2. B.indigestion✓ Correct
3. C.low sperm count
4. D.uncontrolled haemorrhage
5. E.stomach and duodenal ulcer

The function of ribosome is

1. A.excretion of waste
2. B.protein synthesis
3. C.reproduction✓ Correct
4. D.respiration
5. E.secretion of hormones.

A stone is thrown with a speed of 10ms at an angle of 30° to the horizontal, Calculate its time of flight, (g = 10ms2)

1. A.0.5s✓ Correct
2. B.1.0s
3. C.1.7s
4. D.2.0s
5. E.3.4s

What is the concentration (mol dm$^{-3}$) of a solution containing 28 g of potassium hydroxide per 100 cm$^3$ of solution? (K=39; H=1; O=16)

1. A.0.01✓ Correct
2. B.0.05
3. C.1.0
4. D.5.0
5. E.2.8

X = - log10 H+] What does X stand for in the expression above?

1. A.Degree of acidity✓ Correct
2. B.Enthalpy change
3. C.Equilibrium constant
4. D.Ionic product of water
5. E.Solubility product

Find the value of t such that the expression $\frac{1}{t}$ + $\frac{4}{3}$ - $\frac{5}{6t}$ + 1 is equal to zero

1. A.$\frac{1}{6}$✓ Correct
2. B.$\frac{1}{-14}$
3. C.- $\frac{3}{2}$
4. D.$\frac{7}{6}$
5. E.$\frac{2}{5}$

Who was NOT a victim of the January 15, 1966 coup in Nigeria?

1. A.A. Brigadier Maimalari Zachariah
2. B.B. Festus Okotie Eboh
3. C.C. Michael Okpara✓ Correct
4. D.D. Samuel Akintola
5. E.E. Tafawa Balewa

In the nucleus of a cell, the thread-like structure in which genes are embedded is

1. A.centriole✓ Correct
2. B.chromosomes
3. C.cytoplasm
4. D.somatic cell
5. E.spindles

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

491 K is equivalent to

1. A.273 °C
2. B.218 °C
3. C.373 °C✓ Correct
4. D.491 °C
5. E.764 °C