Which of the following is an organic acid? ch3cooh c2h6o ch2o ch4

Option A, CH3COOH

Explanation:

An organic acid is one that has carboxyl group i.e – COOH.  

On rearranging all the given chemical compounds, following are obtained

a)CH3COOH – This compound has a carboxyl group in it and thus it can be re written as CH3-COOH.

b)C2H6O – This compound has a hydroxyl group (OH) and thus it can be re written as C2H5-OH

c)C2HO – This compound has a keto group (C-O) and thus it can be re written as O-C-H2

d)CH4 – This is normal hydrocarbon and is commonly known as methane.

Among all the given options, only option A has a carboxyl group. Thus , it is an organic acid.

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

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