2020 WAEC (WASSCE) English Language Past Questions

Lenz's law of electromagnet states that

1. A.the induced charge is constant for a fixed change of force
2. B.a force is exerted on a current-carrying conductor in a magnetic field
3. C.the magnitude of the induced e.m.f in a circuit is proportional to the rate of change of the number of lines of force linking the circuit✓ Correct
4. D.the induced current in a conductor is in such a direction as to oppose the change producing it
5. E.e.m.f. is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit

Authorised road users include the following except

1. A.A. pedestrians✓ Correct
2. B.B. bicycle riders
3. C.C. roller skaters
4. D.D. tricycle riders

Climatic factors that should be monitored during the management practice illustrated are temperature.

1. A.A. I and II only✓ Correct
2. B.B. I and III only
3. C.C. II and III only
4. D.D. I,I and III

The diagrams above are illustrations of an experimental set-up to demonstrate a type of tropic response in plants. The type of response demonstrated is

1. A.phototropism✓ Correct
2. B.geotropism
3. C.hydrotropism
4. D.thigmotropism

From the words lettered A to D below each of the following sentences, choose the word or group of words as it is used in the sentence We'll buy more but for now lets just....with what we have

1. A.make up
2. B.make do
3. C.make away✓ Correct
4. D.make out

The table below illustrates a farm record for Goodness Farms in the year 1970. Use it to answer this question. DATE NUMBER OF HENS TOTAL EGGS COLLECTED TOTAL EGGS SOLD 4th June         362               176                 96 5th June         360               199                108 6th June         360               177                 48 Calculate the total amount of eggs sold on the farm.

1. A.A. 804
2. B.B. 552✓ Correct
3. C.C. 300
4. D.D. 252

Simplify; $\frac{a}{b} - \frac{b}{a} - \frac{c}{b}$

1. A.$\frac{a - b + c}{ab}$
2. B.$\frac{ab - bc - ac}{ab}$✓ Correct
3. C.$\frac{a^2 - b^2 + ac}{ab}$
4. D.$\frac{a^2 - b^2 - ac}{ab}$

In a nuclear reactor, chain reactions result from the release of

1. A.electrons
2. B.photons
3. C.neutrons
4. D.protons✓ Correct

500g of water is heated so that its temperature rises from 30°C to 72°C in 7 minutes. calculate the supplied per minute. (Specific heat capacity of water is 4200J$kg^{-1}K^{-1}$

1. A.9000J
2. B.12600J
3. C.21000J✓ Correct
4. D.25200J
5. E.88200J

One way of obtaining the median of a given data is to__________

1. A.Sum the value and divide by the number of items.
2. B.Arrange the data in ascending order and subtract each item from the mean.
3. C.Arrange the data in descending order and add each item to the least.✓ Correct
4. D.Arrange the data in either ascending or descending order and find what item divides the set in two equal parts.