BECE 2022 Science Practicals Questions and Answers
Practical questions and answers: BECE 2022 Science Practicals Questions and Answers
1a) study the diagram below and answer the questions that follow
I. Identify the parts labelled I to II
II. Name the method of separation in:
@. A
Y. B
III. State the class of mixtures setup A can be used for.
IV. Give a reason for your answer in (III) above
V. Give one possible component of the mixture in setup B
VI. State the function of part IV.
Solution to Question 1a
a) i)
i beaker
ii. Residue
iii. Filtrate
Ii)
A filtration
B magnetic separation
Iii)
Insoluble mixtures(insoluble solid liquid mixture)
Iv)
It is used to separate insoluble solid from liquid in a solid-liquid mixture eg muddy water
V)
Iron filling and sand
Vi)
It supports the experiment to stand still
b) The diagram below is a part of human system: study it carefully and answer the questions that follow.
I. Identify the system
II. Name the parts from I to IV
III. State the role of part I
IV. Name three diseases that can affect the system
BECE 2022 Science Practicals Questions and Answers
Solution to Question 1b
b)
i ) respiratory system of human
Ii)
i larynx
Ii trachea
Iii bronchus
Iv. lung
V) Helps in producing sounds and speech
IV.
-lung cancer
-tuberculosis
-Asthma
-whooping cough
C) The diagram below is an ecological tool; study it carefully and answer the questions that follow:
I. Identify the tool above
Ii. Name the parts from I to lll
III. Give one use of each of parts I and II
IV. What ecological factor was measured?
V. Name three importance of the ecological factor named at (V) in agricultural soils.
VI. Name one farm tool that helps the ecological factor to be used in agricultural soils.
VII. Describe how the tool mentioned In (VI) is used to aid the factor measured in agriculture.
Solution to Question 1c
C.)
I.
i Rain guage
Ii measuring cylinder
Iii rain water
Il)
i – it collects or channels rain water into the measuring cylinder
ii- it serves as a collector or reservoir of rain water collected from the funnel
Ill)
Rainfall
V)
– irrigation
– diluting chemical drugs like insecticide, weedicite before their application
– cooling engines of farm implements like cars, harvesters etc
VI)
Watering can
Knapsack sprayer
Vll)
Measuring can for irrigation
Knapsack sprayer for application of chemical drugs in the farm eg application of weedicite etc.
1d) Study the electrical circuit below and answer the questions that follow:
I. Identify the components from I to III
II. State the type of arrangement in B
III. State the effects of the arrangement of resistor in A and B on III
IV. Give a reason a reason for each of your answers in( III) above
BECE 2022 Science Practicals Questions and Answers
Solution to Question 1d
I)
i dry cell
Ii key
Iii bulb
Ii)
Parallel arrangement
Iii)
A – the total resistance of the resistors will be high
B- the total resistance of the resistors will be low
Iv)
A. The total resistance Of resistors will be high because, in series connection of resistors, the total resistance is the summation of the resistance of all the individual resistors
B. The resistance will be low because, the total resistance of resistors connected in parallel is gotten by multiplying the resistance of the individual resistors divided by the summation of the resistance of the resistors ( TR=R1xR2xR3/R1+R2+R3)
Science BECE 2022 Science Past Questions and Answers
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