The word 'alkali' is used for alkali metals indicates

Options

A. Ash of the plants
B. Metallic nature
C. Silvery lustre
D. Active metal

Answer

To answer the question "The word 'alkali' is used for alkali metals indicates," we can follow these steps:

### Step 1: Understand the term 'alkali'
The term 'alkali' originates from the Arabic word "al-qaly," which translates to "the ashes." This refers to the ashes of plants, which contain various compounds.

**Hint:** Think about the origins of the word and its relation to natural substances.

### Step 2: Identify the relationship between alkali metals and plant ashes
Alkali metals, which include lithium, sodium, potassium, rubidium, cesium, and francium, are known for their presence in the form of carbonates in plant ashes. Sodium carbonate, for example, is commonly found in the ashes of certain plants.

**Hint:** Consider what substances are commonly found in plant ashes and how they relate to alkali metals.

### Step 3: Conclude the meaning of 'alkali' in the context of alkali metals
Since the term 'alkali' is associated with the ashes of plants, it indicates that alkali metals are linked to the compounds found in these ashes. Therefore, the word 'alkali' signifies the presence of these metals in the form of carbonates in plant ashes.

**Hint:** Reflect on the connection between the name and the chemical properties of alkali metals.

### Final Answer
The word 'alkali' used for alkali metals indicates "ash of plants."