Which one of the following fuels causes minimum environmental pollution?
Answer : C. Hydrogen
What is the proposed target for afforestation in our country in terms of total area?
Answer : B. one-third
Vehicular emissions are responsible for _________ of the country's air pollution
Answer : D. 70%
Which are emission standards that focus on regulating pollutants released by automobiles and other powered vehicles?
Answer : B. Bharat Stage I - IV