concepts in organic chemistry multiple choice

. This occurs when the sigma ( s ) electrons of the H-C bond that is attached to an unsaturated system, such as double bond or a benzene ring, enter into conjugation with the unsaturated system. The concept of hyperconjugation was developed by Baker and Nathan and is also known as Baker a..

The concept of hyperconjugation is very useful in explaining stabilities of some organic molecules. Shortening of carboncarbon single bonds adjacent to multiple bonds: For instance in acetonitrile the carbon-carbon bond adjacent to triple bond acquires some double b..

Organic chemistry is a branch of chemistry that deals with the study of compounds of hydrogen and carbon (hydrocarbons) and their derivative..

The orbital concept of hyperconjugation is well illustrated with the help of propene. In this, the electron pair of C-H bond ( s - bond) is involved in conjugation with the p -electron pair of the double bond. In hyperconjugation the delocalisation of s -electrons of H-C bond takes pl..

If there are two or three multiple bonds in the parent chain, then the suffix -diene (for two) or triene (for three) are used respectively. The positions of the multiple bonds are indicated by the numerals indicating the carbon atoms at which multiple bonds start. The..

Dyes - Chromophores - Unsaturated groups or groups with multiple bonds that impart color to the organic compound are called chromophores. Examples are the nitro, the nitroso and the azo grou..

Unsaturated groups or groups with multiple bonds that impart color to the organic compound are called chromophores. Examples are the nitro, the nitroso and the azo group..

The most obvious piece of information from mass spectra is the molecular weight of the compound. Measurement of an unknown's molecular weight allows us to narrow the possibilities for molecular formula down to only a few choices. A second piece of information provided by the mass spectru..

Dyes - Meaning and Characteristics - Colored substances used for dyeing fabrics are called dyes. A true dye must: Have a suitable color Be able to attach itself to the material from solution or be capable of being fixed on it Be fast to light and washing when fixed. For this it must be resistant to..

A nucleophile is a reagent containing an atom having unshared or lone pair of electrons. As a nucleophile is electron rich it seeks electron deficient sites i.e., nucleus (nucleus loving). According to Lewis concept of acids and bases, nucleophiles behave as Lewis bases. For example, ..