(a) What are fertilizers? Explain each type of fertilizer with suitable examples.
(b) How do soaps remove dirt from clothes?
(a) What are fertilizers? Explain each type of fertilizer with suitable examples.
(b) How do soaps remove dirt from clothes?
(a) Fertilizers are organic or inorganic materials that we add to the soil to provide one or more nutrients to the soil. Fertilizers given to plants can be classified into two. They are organic and inorganic fertilizers.
- Organic fertilizers
Fertilizers containing only plant or animal-based materials or those synthesized by microorganisms are called organic fertilizers. These fertilizers can be prepared easily. This type of fertilizer is economical. (e.g) Vermi compost, compost.
- Inorganic fertilizers
The fertilizers prepared by using natural elements by making them undergo chemical changes in the factories are called inorganic fertilizers. (e.g) Urea, Ammonium sulphate and Superphosphate.
(b) Bathing soap and washing detergents are kinds of soaps which we use in our daily life. In addition to this, we are using wash powder to remove strong stains on the clothes. The detergent molecules have two sides, one side water-loving, the other water-hating. Water hating goes and joins with dirt and oil in the cloth while the water-loving joins with the water molecules. When you agitate the cloth the dirt is surrounded by many molecules and is taken away from the cloth. The cloth becomes clean, and the dirt surrounded by the detergent molecules float in the water making it dirty.
(a) Fertilizers are organic or inorganic materials that we add to the soil to provide one or more nutrients to the soil. Fertilizers given to plants can be classified into two. They are organic and inorganic fertilizers.
- Organic fertilizers
Fertilizers containing only plant or animal-based materials or those synthesized by microorganisms are called organic fertilizers. These fertilizers can be prepared easily. This type of fertilizer is economical. (e.g) Vermi compost, compost.
- Inorganic fertilizers
The fertilizers prepared by using natural elements by making them undergo chemical changes in the factories are called inorganic fertilizers. (e.g) Urea, Ammonium sulphate and Superphosphate.
(b) Bathing soap and washing detergents are kinds of soaps which we use in our daily life. In addition to this, we are using wash powder to remove strong stains on the clothes. The detergent molecules have two sides, one side water-loving, the other water-hating. Water hating goes and joins with dirt and oil in the cloth while the water-loving joins with the water molecules. When you agitate the cloth the dirt is surrounded by many molecules and is taken away from the cloth. The cloth becomes clean, and the dirt surrounded by the detergent molecules float in the water making it dirty.
