Basic Principles of Orgainc Chemistry MCQs for NEET — Chemistry Questions with Answers

The formula $C_4H_{10}O$ can give rise to three ether metamers: 1. Diethyl ether (CH$_3$CH$_2$OCH$_2$CH$_3$), 2. Methyl propyl ether (CH$_3$OCH$_2$CH$_2$CH$_3$), and 3. Ethyl methyl ether (CH$_3$CH$_2$OCH$_3$). These are the three possible structures, hence the correct option is 3.

Tautomerism is a phenomenon where a proton migrates between two structural isomers that are in equilibrium with each other. A common example is the keto-enol tautomerism, where a proton shifts between the oxygen and carbon atoms.

The compound $C_4H_{10}O$ can show metamerism (e.g., diethyl ether and methyl propyl ether), functional isomerism (e.g., butanol and methoxypropane), and position isomerism (e.g., 1-butanol and 2-butanol). Thus, it exhibits all these types of isomerism.

Cis-trans isomerism (also known as geometric isomerism) occurs in alkenes where there are two different groups attached to each carbon of the double bond. In $ClCH = CHCl$, the double-bonded carbons each have different groups (H and Cl), allowing for the existence of cis and trans forms.

An open chain compound is a compound with a linear or branched structure and no rings. Pentane, isopentane, and neopentane all have open chain structures. Therefore, the correct answer is 'All the above'.