Chemistry-14-Organic Chemistry Basics

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1.
2,4-D, which is sold as a weed killer of the broad-leaved weeds is a synthetic version of __: 
2.
Trimethylxanthine is a chemical name of a stimulant which is found in tea and coffee. What is the popular name?
3.
Which acid is described as HOOCCOOH?
4.
Which among the following is the most abundant organic compound in nature?
5.
Which among the following gases is used in production of Vanaspati ghee from vegetable oils?
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