Which one of the following compounds has a low calorific value?

The correct answer is Wood. It is a fibrous and porous structural tissue found in the roots and stems of trees and other woody plants.Wood is an organic material a natural composite of Cellulose Fibers that are strong in tension and fixed in a matrix of lignin that resists compression.Wood is defined as only the Secondary Xylem part in the stems of trees. In a tree, it helps to give support, woody plants to grow large or to stand up by themselves.It also helps to conveys Nutrients and Water between the LEAVES, other growing tissues, and the roots of the plants.Wood has been used for thousands of years as a construction material, for making tools, weapons, furniture, fuel, construction material, and paper.Petrol is defined as crude OIL is a naturally OCCURRING, yellowish-black liquid found on the earth's surface. It is a fuel used to drive vehicles. Alcohol is defined as an organic compound that carries at least one HYDROXYL functional group (−OH) bound to a saturated carbon atom.Coal is a combustible black or brownish-black sedimentary rock with a high amount of HYDROCARBONS and carbon.