Integrated Science — 2021

Natural fats are composed of

Ash from burnt plant material can be used to prepare local soap because it contains

Excessive amount of nitrogen in the soil leads to

The SI unit of electric charge is

Which of the following gases is a greenhouse gas?

The instrument most suitable for the measurement of the thickness of a sheet of paper is

Which of the following indicators can measure pH values?

The main function of the rumen is to

The fibrous mesocarp of coconut aids its dispersal by

Which of the following radiations are particles? I. Alpha II. Beta III. Gamma

A substance that contains 10 electrons and 11 protons is

Which of the following practices reduces the speed of run-off along sloped lands?

Methods of reducing friction in machines include I. use of ball bearings II. use of lubricants III. use of cooling agents Which of the following statements above are correct?

Leguminous fodder crops are included in pastures to ensure that animals are supplied with

Which of the following pollutants affect weather conditions? I. Sulphur dioxide II. Ozone III. CFC

Fresh tomato seeds only germinate after they dry up. This may be due to

The work done by a machine in moving a body is 450 J. If the force applied is 30.0 N, calculate the distance through which the body moved.

In the reflex arc, the

How many moles of oxygen are present in 4.0 g of the gas?

An athlete runs an 800 m race in 4 minutes and 40 seconds. Calculate the average speed of the athlete.

The volume occupied by 0.02 moles of a gas at standard temperature and pressure is

Which of the following activities best describe soil conservation? I. Ensuring presence of water in the soil. II. Maintaining nutrient in the soil. III. Practicing crop rotation on the soil. IV. Protecting the structure of the soil.

Oil dipped on the surface of water bodies kills mosquito larvae through

An object weighs 20 N in air and when immersed in a liquid it displaces 0.5 kg of the liquid. Calculate the upthrust on the object. [g = 10 ms-2]

Alkanoic acid + alkanol ⇋H2SO4 alkyl alkanoate + water Use the equation above to answer the question below The reaction is called

Alkanoic acid + alkanol ⇋H2SO4 alkyl alkanoate + water Use the equation above to answer the question below The H2SO4 is acting as

In which of the following applications is cooling by evaporation used? I. Temperature regulation in humans II. Cooling of water in an alcohol clay pot III. Cooling by an air conditioner

The earthworm is important to the farmer because it

Which of the following blood types are safe to use for a person with type B blood? I. A II. B III. O

Smoke is a mixture of

Which of the following crops is a fruit vegetable?

The elements in bronze are

The acrosome in the sperm cell

Which of the following pollutants cause(s) acid rain? I. CO2 II. NO2 III. SO3

The part of the human ear that helps to balance pressure between the ear and the atmosphere is

Digestion of food is completed in the

A maize cob showing large mass of black spores on some of the grains indicates infection of

Which of the following unit(s) is/are derived? I. Ohm II. Volt III. Ampere

When anaerobic respiration and aerobic respiration are compared, the energy yield

An example of a unisexual flower is

Which of the following materials is non-magnetic?

Plastics have become important substitutes for metals n manufacturing industries because of their I. anti-rust properties. II. relative cheapness. III. ability to be moulded into shapes. Which of the statements above are correct?

Species, genus and family are examples of

The correct order in which food moves through the digestive system of a fowl is

If the genotype of the parents are Aa and Aa, the offsprint most probably will be

Sound waves travel fastest in

Which of the following properties of carbon dioxide is useful in fire fighting? I. It does not support combustion. II. It is heavier than air. III. It does not produce toxic compounds.

Pricking of yam is done to

An example of a wind instrument is

Which of the following descriptions best fit the structure of the incisor in humans?