Agricultural Science MCQ Quiz!

The sun does not make us sick. In fact, sunlight exposure can have several health benefits, such as providing vitamin D, improving mood, and boosting the immune system. However, excessive exposure to sunlight without protection can lead to sunburns, skin damage, and an increased risk of skin cancer. So while the sun can have negative effects if not used responsibly, it does not directly make us sick.

Air pollution refers to the presence of harmful substances such as gas and smoke in the air. These pollutants can be released from various sources, including industrial emissions, vehicle exhaust, and burning of fossil fuels. Breathing in polluted air can have detrimental effects on human health and the environment.

Food is essential for our growth, strength, and overall health. It provides us with necessary nutrients, vitamins, and minerals that our body needs to function properly. However, the statement "it makes us sick" is not true. While certain unhealthy food choices or improper handling of food can lead to illness, the main purpose of food is to nourish and support our well-being, not to make us sick.

The tap is not a natural source of water because it is a man-made mechanism that allows access to water from a pipeline or other water source. Natural sources of water include rivers, lakes, and oceans, which are all bodies of water that occur naturally in the environment.

Air is a substance that is present all around us. We cannot see it, but we can feel it through sensations like the wind blowing or the feeling of breath on our skin. The other options, such as the sun, moon, and stars, are celestial bodies that are not physically tangible and cannot be felt directly. Therefore, the correct answer is air.

Soil is composed of living organisms, minerals, and water. However, sugar is not a component of soil. While organic matter, including dead plant and animal material, is present in soil, sugar itself is not typically found naturally in soil.

The given properties of rock include being hard, having different sizes, and having shape. These are common characteristics of rocks. However, the property of being able to float on water is not a typical characteristic of rocks. Rocks are denser than water, so they generally sink when placed in water. Therefore, the property of floating on water does not apply to rocks, making it the correct answer.

The sun rises from the east and sets to the west. This is a well-known fact based on the Earth's rotation. As the Earth rotates on its axis from west to east, it appears as if the sun is moving across the sky from east to west. The sun rises in the east in the morning and sets in the west in the evening, making east and west the correct options.

Cholera is caused by drinking dirty water. It is an infectious disease caused by the bacterium Vibrio cholerae. When a person consumes water or food contaminated with the bacteria, they can develop severe diarrhea and dehydration. Cholera is most commonly found in areas with poor sanitation and inadequate access to clean water.

Loamy soil is best used for farming because it has a balanced composition of sand, silt, and clay. This type of soil retains moisture well while also allowing for proper drainage. It has good fertility and nutrient-holding capacity, making it ideal for plant growth. Loamy soil is easy to work with and has a crumbly texture, providing a suitable environment for plant roots to penetrate and access nutrients.

The given options consist of materials that are typically made from rock, such as steel, glass, and tiles. However, paper is not made from rock, but rather from wood pulp or other plant fibers. Therefore, paper is the only option that is not made from rock.

Water is essential for plant growth, human survival (as we drink it when we are thirsty), and it is also used for industrial purposes. However, it is incorrect to say that water does not save lives. Water plays a crucial role in maintaining hygiene and sanitation, preventing the spread of diseases, and providing emergency relief during natural disasters or emergencies. It is also used in firefighting to extinguish fires and save lives. Therefore, the statement "it does not save life" is not true.

Air is used for various purposes, such as drying clothes, creating fire, and running engines. However, air does not directly contribute to making food delicious. While air circulation can aid in cooking and baking processes, it is not the primary factor that enhances the taste of food. The flavor of food primarily comes from ingredients, seasonings, and cooking techniques. Therefore, air is not used specifically to make food delicious.

Clay soil is known for its ability to hold a lot of water. It has small particles that are tightly packed together, creating a dense structure that retains moisture. This type of soil is often found in areas with high rainfall or where there is poor drainage. Clay soil is beneficial for plants that require a lot of water, but it can also become compacted and difficult to work with.

A sickle is a hand-held agricultural tool with a curved blade used for harvesting crops, particularly grain. It is commonly used in many parts of the world for cutting grass, wheat, and other crops close to the ground. The curved shape of the blade allows for efficient cutting and gathering of the crops. Therefore, based on the given options, it can be concluded that this tool is a sickle.

Rocks are commonly used in various industries and applications. They are used for making cement, as an essential ingredient in the construction of buildings, and in the production of glass. However, rocks are not used for making money as they do not possess any inherent value or monetary properties.

Sandy soil has low nutrient levels because it is composed of larger particles that do not hold onto nutrients well. These larger particles create larger spaces between them, allowing water and nutrients to easily drain away. As a result, sandy soil often lacks the necessary nutrients for plants to thrive.

Limestone is the correct answer because it is the primary rock used in the production of cement. Limestone is rich in calcium carbonate, which is a key ingredient in cement manufacturing. When limestone is heated at high temperatures, it undergoes a chemical reaction that produces a powdered form called clinker. This clinker is then mixed with gypsum and other additives to produce cement. Limestone's abundance, availability, and chemical composition make it an ideal choice for cement production.

Scissors are not typically used as cutting tools by farmers. Farmers usually use tools like bolo, cutlass, and axe for cutting purposes. Scissors are more commonly used for cutting materials like paper, fabric, or hair.

There are four types of soil.