Q. The moderator used in nuclear reactor is

 1948  194 VMMC MedicalVMMC Medical 2007 Report Error

Solution:

TEL (tetraethyl lead) is used as antiknock agent in petrol engine. is used as moderator in nuclear reactor. is used for bleaching delicate articles like wool, hair. It is also used as antiseptic and germicide. R-O-R (ether) is used as solvent