{:(,"Column-I",,"Column-II",),((A),"Law of conservation of mass",(p),CH_(4) "has carbon and hydrogen in" 3:1 "mass raio",),((B),"Law of multiple proportion",(q),10mL N_(2) "combines with" 30mL "of" H_(2) "to form" 20mL "of" NH_(3),),((C),"Law of definite proportion",(r),"S and" O_(2) "combine to form" SO_(2) "and" SO_(3),),((D),"Law of reciprocal proportion",(s),"In" H_(2)S "and"SO_(2) "mass ratio ofH and O w.r.t. sulphure is" 1:16 "hence in" H_(2)O "mass ratio of H and O is" 1:8.,),((E),"Gay Lussac's Law",(t),4.2 g MgCO_(3) "gives" 2.0 g "residue on heating",):}

{:(,"Column-I",,"Column-II",),((A),"Law of conservation of mass",(p),C

1.	{:(,"Column-I",,"Column-II",),((A),"Law of conservation of mass",(p),CH_(4) "has carbon and hydrogen in" 3:1 "mass raio",),((B),"Law of multiple proportion",(q),10mL N_(2) "combines with" 30mL "of" H_(2) "to form" 20mL "of" NH_(3),),((C),"Law of definite proportion",(r),"S and" O_(2) "combine to form" SO_(2) "and" SO_(3),),((D),"Law of reciprocal proportion",(s),"In" H_(2)S "and"SO_(2) "mass ratio ofH and O w.r.t. sulphure is" 1:16 "hence in" H_(2)O "mass ratio of H and O is" 1:8.,),((E),"Gay Lussac's Law",(t),4.2 g MgCO_(3) "gives" 2.0 g "residue on heating",):}
Answer» ANSWER :A::B::C::D