panne par jaean
1 klorophil ke nirman mean kaun-se do tattv avashyak hote haian?
2 epikalchar (Apiculture) kise kahate haian
3 samudayik vikas yojana ka shubharambh kis sarakar ne kiya
4 nimn mean se kaun 'partheniyam bhakshak' hai
5 'yogahart' (Yoghurt) ka nirman kis jivanu ke shuddh kalchar ke prayog se kiya jata hai?