Sonali went to her ancestral village along with her father during the summer holidays. She found that the women of the village still used dried cow-dung cakes (uple) as the fuel to cook food and for other heating purposes.
One day Sonali went to Panchayat meeting in the village which was attended by all the village elders and requested them to install gobar gas plant in the village and use cow-dung in it to produce gobar gas, instead of burning cow-dung cakes directly. She explained the advantages of using gobar gas as a fuel instead of cow-dung cakes.
Everyone liked the idea and thanked Sonali for guidance.
Read the above passage and answer the following questions.
(i) State two disadvantages of using dried cow-dung cakes as a fuel for cooking food.
(ii) State two advantages of using gobar gas as a fuel for cooking food.
(iii) What values are displayed by Sonali in this whole episode?