Which could not be directly prepared from 4-bromobenzenediazonium ion?

Why methane could not be prepared by Wurtz reaction?

Which antibiotic is prepared from Fungi?

Propanamide could be prepared by

Why methane could not be prepared by Wurtz reaction ?

Ram planned an activity to observe an object through pipes as shown in figure,so that he could see objects which he could not directly see.b)If any of the mirrors is removed,will he be able to see the objects?