A 27 % (wt/wt) aqueous ammonia has a specific gravity of 0.90 at 298 K. Correct statements are

The normality of NH₄OH solution is 7.5

10 mL of the above solution is diluted to a litre. 10 mL of the diluted solution requires 12.5 mL of 0.05 NHCI for complete neutralisation. The strength of this ammonia solution is 0.063 N.

The molality of the solution of NH₄OH is 10.57

The mole fraction of water in the solution is 0.78