Solution:As per the question period, the new Wholesale Price Index (WPI) series was introduced with effect from 14 September, 2010. The base year of this WPI series was 2004-05. On 12 May, 2017 (effective from April, 2017) the base year of the WPI has been revised from 2004-05 to 2011-12.Major Components of WPI
'Primary articles' (22.62%) is a major component of WPI, further subdivided into Food
Articles and Non-Food Articles:
Food Articles: Cereals, Paddy, Wheat, Pulses, Vegetables, Fruits, Milk, Eggs, Meat & Fish, etc.
Non-Food Articles: Oil Seeds, Minerals and Crude Petroleum.
The next major basket in WPI is Fuel & Power (13.15%), which tracks price movements in Petrol, Diesel and LPG.
The biggest basket is Manufactured Goods (64.23%). It spans across a variety of manufactured products such as Textiles, Apparels, Paper, Chemicals, Plastic, Cement, Metals, and more.
Manufactured Goods basket also includes manufactured food products such as Sugar, Tobacco Products, Vegetable and Animal Oils, and Fats..