BECE Integrated Science Past Questions 2021

Which of the following diseases is NOT a deficiency disease?

An atom of an element has a neutral charge because the

Which of the following organisms is an ecto-parasite of animals?

An atom has 20 nucleons and 9 protons. What is its neutron number?

Which of the following statements about aerobic and anaerobic respiration is NOT correct?

An aluminium cube of side 2 m has a mass of 24 kg. Determine the density of the aluminium.

An example of the process of osmosis is

What is the systematic name of the compound CO?

Which of the following methods can be used to prevent iron from rusting? I. Painting II. Alloying III. Keeping the iron in a desiccator IV. Keeping iron in a moist environment

The proper way of maintaining soil structure and fertility is termed as soil

The instrument that can be used to measure accurately the mass of a substance is

Which of the following chemicals can be used to remove permanent hardness of water?

Which of the following chemical symbols is that of an element with seven electrons in the outermost shell?

Which of the following statements about the base of a transistor are correct? The base is: I. made very thin II. made very wide III. responsible for activating the transistor IV. made of n-type semiconductor

Which of the following instruments is connected in parallel across a resistor in an electrical circuit?

Which of the following fruits is dispersed by water?

If a soil is smooth and sticky, it means that the soil has a large amount of

The current flowing through a resistor of resistance 10 ohms is 2.5 A. What is the potential difference between the two terminals of the resistor?

Calcium oxide and water react to form calcium hydroxide. The formula for the product is

Which of the following machines are complex machines? I. Tractor II. Mist blower III. Sewing machine

Heat from the sun reaches us by: I. Conduction II. Convection III. Radiation

A person urinates more often in the rainy season than in the dry season because

In an experiment to determine particle sizes of soil by sedimentation, the particles above the clay suspension are

Purple colouration of leaves of a plant is a major symptom of deficiency in

Which of the following chemical equations is balanced?

When an atom loses an electron, the ion formed is called

A machine lifts a load of 100 N through a vertical distance of 2 m in 10 s. What is the power of the machine?

A machine lifts a load of 100 N through a vertical distance of 2 m in 10 s. What is the work done by the machine?

The instrument used to measure potential difference across a resistor is

One of the properties of acids is that they

Which of the following organisms attacks crops in storage?

Determine the potential energy of a block of mass 2 kg placed on a building 10 m tall. [g = 10 ms⁻²]

Which of the following planets is at the center of the solar system?

An advantage of practicing organic farming is that it

Mosquito pupa breathes through tubes called

The function of the white blood cells in humans is to

Which of the following activities are cultural practices in vegetable production? I. Application of fertilizer II. Harvesting III. Mulching

A farming system which involves the growing of rice and the rearing of fowls is known as