Question

Stress necessary to cause a non proportional or permanent extension equal to a defined percentage of gauge length is called as (ECET 2014) a) Rupture stress b) proof stress c) Working stress d) Allowable stress​

Answer 1

The chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring; attached to the ring is a long carbon–hydrogen side chain, known as a phytol chain.