Two solutions each in 100 mL having 4 g glucose and 10 g sucrose respectively. Which one is correct to develop isotonic character in them (Assume T constant)?
(1) 0.42 g urea in glucose solution
(2) 0.42 g glucose in glucose solution
(3) 0.42 g sucrose in glucose solution
(4) 0.42 g urea in sucrose solution