What are the primary responsibilities of a chemical engineer involved in "R&D"?
develop large scale manufacturing operations
discover new products and processes
training of new chemists
determine products needed by consumers

lol idk man i guess u gotta ask bill nye the science guy

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.