Choose or find odd word - Mercury , Acetone , Petrol , Kerosene

A. MERCURY

In following questions, one term in number series is incorrect. - Find out the incorrect number 121, 143, 165, 186, 209

C. 186

(I).   Kamal is available at home from 12 noon to 4 p.m. on Tuesday, Thursday and Sunday.
(II).  His younger brother Navin is available at home on Monday, Thursday, Friday and Sunday between 10 a.m. to 2 p.m.
(III). The eldest brother Rajiv is available between 9 a.m. to 12 noon on Monday, Wednesday and Thursday and 2 p.m. to 4 p.m. on Friday, Saturday and Sunday. For how many days only one brother is available at a particular time in a week ?

D. FOUR

Choose or find odd letter group - PRT , MOQ , GEC , TVX , SUW

C. GEC

Choose or find odd word - Kathakali , Disco , Garba , Bhangra , Kathak

B. DISCO