1. What is neutralization reaction?

2. Write a balanced chemical equation for the reaction between each of the following pairs of substances:

   (α) Sodium metal and dilute hydrochloric acid

   (β) Sodium hydroxide and dilute hydrochloric acid

Explain weaning as used in animal production.

1. What is a Milky Way?

2. State one use of artificial satellites.

1. What is a habitat?

2. Give two examples of a habitat.

1. Define Pressure.

2. Explain why it is important to sharpen a knife before use.

1. State two differences between metals and non-metals.

2. What is an alloy?

3. Mention the components of each of the following alloys:

   (α) Steel

   (β) Brass

Mention three conditions suitable for rearing tilapia in a fishpond.

Explain how the streamlined body of a bony fish enables it to live successfully in water.

1. What is a disease vector?

2. Mention two methods of controlling each of the following types of pests of farm animals:

   (α) ectoparasites;

   (β) endoparasites.

1. State two symptoms of nitrogen deficiency in a tomato plant.

2. Describe side dressing as a method of fertilizer application.

1. Define power

2. State the S.I unit of power

Draw the electronic structure of potassium

[Atomic number of potassium = 19]

1. What is respiration?

2. Name the types of respiration that occur in humans.

List three ways of maintaining soil fertility.

1. Write the systematic name of each of the following chemical compounds:

   (α) FeS;

   (β) SO₂;

   (γ) CO₂.

2. Give one reason why copper, silver, and gold are mostly used in making ornaments and jewellery.

1. What is a fuse?

2. Explain why a fuse is used in an electrical circuit.

1. What is the difference between unicellular organism and multicellular organism?

2. State two reasons why vegetable crops are important to humans.

1. State two elements of climate.

2. What is the difference between climate and weather?

Mention three advantages of staking in crop production.

1. Explain each of the following processes:

   1. corrosion;

   2. sublimation.