when was bharat stage norms introduced in india
Bharat Stage emission standards The standards, based on European regulations were first introduced in 2000. Progressively stringent norms have been rolled out since then. All new vehicles manufactured after the implementation of the norms have to be compliant with the regulations.[2] Since October 2010, Bharat Stage (BS) III norms have been enforced across the country. In 13 major cities, Bharat Stage IV emission norms have been in place since April 2010[3] and it has been enforced for entire country since April 2017. In 2016, the Indian government announced that the country would skip the BS-V norms altogether and adopt BS-VI norms by 2020.[4]
Caste system in India The caste system as it exists today is thought to be the result of developments during the collapse of the Mughal era and the British colonial regime in India.[1][7] The collapse of the Mughal era saw the rise of powerful men who associated themselves with kings, priests and ascetics, affirming the regal and martial form of the caste ideal, and it also reshaped many apparently casteless social groups into differentiated caste communities.[8] The British Raj furthered this development, making rigid caste organisation a central mechanism of administration.[7] Between 1860 and 1920, the British segregated Indians by caste, granting administrative jobs and senior appointments only to the upper castes. Social unrest during the 1920s led to a change in this policy.[9] From then on, the colonial administration began a policy of positive discrimination by reserving a certain percentage of government jobs for the lower castes.