Water soluble bases are called alkalies.

Explanation:

Definition of Alkalies:
Alkalies are chemical compounds that are water soluble bases. They are substances that release hydroxide ions (OH-) when dissolved in water. Alkalies are generally strong bases and have a high pH value.

Properties of Alkalies:
1. Solubility: Alkalies are highly soluble in water.
2. Conductivity: Alkalies are good conductors of electricity when dissolved in water due to the presence of hydroxide ions.
3. Taste: Alkalies have a bitter taste.
4. Corrosiveness: Alkalies are corrosive in nature and can cause damage to living tissues.
5. Reactivity: Alkalies are highly reactive with acids and undergo neutralization reactions to form salts and water.

Examples of Alkalies:
1. Sodium hydroxide (NaOH): It is commonly known as caustic soda and is used in the manufacturing of soap, paper, and textiles.
2. Potassium hydroxide (KOH): It is commonly known as caustic potash and is used in the production of detergents and fertilizers.
3. Calcium hydroxide (Ca(OH)2): It is commonly known as lime water and is used in the construction industry for mortar and plaster.

Comparison with Other Options:
a) Aldehydic: Aldehydic compounds are not water soluble bases. They are organic compounds containing the aldehyde functional group (-CHO).
c) Neutral: Neutral substances have a pH value of 7 and are neither acidic nor basic. They do not release hydroxide ions in water.
d) Basic: Basic substances do not necessarily have to be water soluble. They can be insoluble in water but still exhibit basic properties.

Therefore, the correct answer is option B, alkalies, as they specifically refer to water soluble bases.

There is nothing to explain dude!water soluble bases are called alkalies that's it. NaOH,KOH etc.