Which term describes this reaction?
h2so4
heat
он.
addition
condensation
elimination
substitution

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.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)