Union Environment Minister Prakash Javadekar on Thursday said that every state has right to conduct experiments, like Delhi's odd-even scheme, to find out solutions to support environment."States can do experiments like odd-even to support the environment but an IIT reports yesterday (Wednesday) said that it was not much impactful,” Javadekar told media on the sidelines of 22nd BASIC (Brazil, South Africa, India, China) Ministerial Meeting on climate change here.The fortnight-long second phase of Delhi government's odd-even traffic scheme will start on April 15. CNG operated vehicles, central government ministers and VVIPs, women motorists and cars ferrying school students in uniform will be exempt during it.The first phase of the odd-even scheme in January this year had turned out to be hugely popular.