The functional group present in carboxylic acids is ?

-COOH

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-CO-

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-OH

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-CHO

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Solution

The correct option is B -COOH
Carboxylic acids are represented by -COOH- functional group. It ionizes to give carboxylate ions and hydrogen ions. This group present in a compound makes it an acid and if present with other groups in the compound it is always present at position no.1 and carbon is included in the carbon chain atoms.

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Similar questions

(a) Write the formula of the functional group present in carboxylic acids.
(b) Name the functional group present in $C H_{3} - C \equiv C H .$
(c) Name the functional groups present in the following compounds :
(i) $C H_{3} - C H O$ (ii) $C H_{3} - C H_{2} - C O O H$ (iii) $C H_{3} - O | | C - C H_{3}$ (iv) $C H_{3} - C H_{2} - C H_{2} - O H$

The functional group present in carboxylic acids is

Q. The functional group present in propanal is:

(a) −OH
(b) −COOH
(c) −CO−
(d) −CHO

Q. Match the following compounds with their functional groups:

S.No	Compounds	Functional Groups
1.	Alcohol	$> C = O$
2.	Aldehyde	$- O H$
3.	Ketone	$- C O O H$
4.	Carboxylic acid	$- C H O$

Q. Which of the following compounds contains a carboxylic acid group?

C H_{3} O H, C H_{3} C O O H, C H_{3} C H O, C H_{3} C O C H_{3}

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