Question

Find the odd one out :
Tamarind, Soap, Lemon, Vinegar. ​

Answer 1

$\dashrightarrow$ ❝ Soap ❞

• Here , soap is the odd one in the given words.

• Organic acids are found in tamarind, lemon and vinegar.( but not in Soap )

• Soaps contain bases. Therefore, soap is the odd one as it is a basic substance.

Some more information :

About acids :

• Acids are sour in taste.

• It is corrosive in nature.

• Acids turn blue litmus to red.

• Acids are of two types : Mineral acids and Organic acids.

• Organic acids : Acids that are found in plants, animals or any other organic matter are called organic acids.

Some examples of organic acids:-

• Malic acid - Found in apple.
• Lactic acid - Found in curd
• Citric acid - Found in lemon

• Mineral acids : Acids that are obtained from inorganic compounds are called mineral acids.

Some examples of mineral acids:-

• Sulphuric acid
• Nitric acid

About bases :

• Bases are bitter in taste.

• They are soapy to touch.

• They turn red litmus to blue.

• Examples : Sodium hydroxide, calcium hydroxide.

Answer 2

The odd one among the four is soap.

Explanation:-

In the question, we have been given four choices and asked to pick out the odd one among them. The four choices are listed below: $\:$

⑴ Tamarind

⑵ Soap

⑶ Lemon

⑷ Vinegar

Here, tamarind, lemon and vinegar contain tartaric acid, citric acid and acetic acid, respectively, which are common under the category of acids. While, the second option "Soap" is classified under bases category since, it is soapy in nature. So, obviously, we can say that SOAP is the odd one out among them.

Here is a few information about Acids and Bases.

Acids:

⠀⠀They are the substances that tastes sour. They are otherwise called us acidic substances. Some of the acids are naturally occurring which are generally present in eatables, called as organic acids. For example,

⠀⠀⠀↝ Apple - Maleic acid

⠀⠀⠀↝ Spinach/tomato - Oxalic acid

Acids are also obtained from inorganic compounds. They are termed as mineral acids. For example,

⠀⠀⠀↝ Hydrofluoric acid

⠀⠀⠀↝ Chromic acid

Acids are generally corrosive in nature, but not all acids are corrosive. They are solube in water.

Bases:

⠀⠀Bases are bitter in taste and are soapy to touch. They are also called as basic substances. Water soluble bases are called as alkalis, but not all bases are solube in water.

Examples,

⠀⠀⠀↝ Caustic soda - Sodium hydroxide

⠀⠀⠀↝ Washing soda - Sodium carbonate

⠀⠀⠀↝ Slaked lime - Calcium hydroxide

⠀⠀⠀↝ Baking soda - Sodium bicarbonate