BECE Integrated Science Past Questions 2023

Which of the following pairs of elements is in the same period in the periodic table?

The two main particles in the nucleus of an atom are

When a ray of light travels from a dense medium into a denser medium, it

The use of a separating funnel is most appropriate for separating which of the following mixtures?

The brightest of all the planets is

Which of the following factors has the greatest influence on vegetable crop production?

The element used in the manufacturing of electronic components is

Which of the following statements distinguishes arteries from veins?

An anemometer is an instrument for measuring

The current in a resistor is 3 A. If the resistance of the resistor is 4 ohms, determine the potential difference across the resistor.

The grouping together of many stars is known as

The SI unit that is derived is

An example of a natural source of light is

The farming system that makes the most effective use of land is

Which of the following ions is formed by the loss of 2 electrons?

Products X, Y, Z and W have masses 0.05 kg, 50 mg, 500 g and 0.05 g respectively. Which of the products have the same mass?

The very hard greenish-black deposit around the corners of the teeth is known as

When equal amounts of water are poured on dry soil samples, the increase in weight per unit amount of soil would be highest in

The following practices are cultural practices in crop production except

An example of a mixture is

Which of the following statements about acids are correct? I. They turn red litmus paper blue. II. They can be neutralized by bases. III. Citrus fruits contain acids.

The practice of reducing the number of seedlings per stand for better growth is known as

A herbal mixture has a volume of 200 m³ and a mass of 10,000 kg. Determine the density of the mixture.

How many atoms are present in H₂O₂?

Which of the following electronic components is NOT made of semiconductors?

Steam changes to liquid by a process called

Which of the following body shapes facilitates movement in a fluid?

Stirring of soil on vegetable beds is to: I. improve aeration of soil. II. increase activities of soil organisms. III. increase water penetration in the soil. IV. reduce weed growth.

The base of the N-P-N transistor normally

One benefit of technology to industrialization is

Contour ploughing is normally practiced on

A pupil of mass 70 kg climbed a building of height 15 m. Determine the pupil's potential energy at the top of the building. [g = 10 m s⁻²]

Which of the following pairs of structures are present in animal cells?

Artificial satellites can be used for: I. communication. II. oil and gas exploration. III. meteorological studies.

The image formed by a plane mirror is always

The following practices are principles in crop production except

The daily variation of atmospheric conditions is called

To test for starch in a green leaf, it is usually boiled to

The following effects are as a result of soil erosion except

Products X, Y, Z and W have masses 0.05 kg, 50 mg, 500 g and 0.05 g respectively with equal volumes. Which product has the highest density?

(a)(i) State three ways in which soil erosion affects crop growth. (a)(ii) State one method of controlling soil erosion. (b)(i) Name two businesses that use scientific knowledge and explain how each operates. (c)(i) Explain how the female Anopheles mosquito transmits malaria to humans. (c)(ii) Name one chemical method of controlling malaria. (d)(i) Name three fundamental (base) units in the SI system. (d)(ii) State the physical quantity measured by each unit named in (d)(i).

(a) Define neutralisation as used in chemistry. Give one example of a neutralisation reaction. (b) State three physical properties of soil. (c)(i) Define power. (c)(ii) Calculate the power developed when a mass of 50 kg is raised to a height of 10 m in 30 seconds. (Take g = 10 m/s².) (d) State three ways in which technology has benefited human beings.

(a)(i) Define aerobic respiration. (a)(ii) State two differences between aerobic and anaerobic respiration. (b)(i) Define potential difference. (b)(ii) A resistor of 100 Ω has a potential difference of 250 V across it. Calculate the current flowing through the resistor. (c)(i) Name the causative organism of Cocoa Swollen Shoot disease. (c)(ii) Name the insect that transmits this disease. (c)(iii) State two ways of preventing/controlling Swollen Shoot disease. (d) Write the electronic configurations of two elements whose atomic numbers are given in your original paper, and state the ions they form.

(a)(i) State two reasons why fuses are important in electrical circuits. (a)(ii) Name two household appliances that contain fuses. (b)(i) Define teenage pregnancy. (b)(ii) State two factors that contribute to teenage pregnancy. (c) State three precautions a worker can take to prevent hazards in the workplace. (d)(i) State two practices that destroy water bodies. (d)(ii) State two ways of conserving water bodies.