question_answer

Direction: Q. 6 to 10
Read the following and answer questions from [6] to [10].
Abhinav tested the solubility of four different salts, i.e. potassium nitrate, sodium chloride, potassium chloride and ammonium chloride at different temperature.
He took four beakers and marked as (I) Potassium nitrate, (II) Sodium chloride, (III) Potassium chloride, (IV) Ammonium chloride and then he dissolved each salt in 100 g of water and placed a thermometer in it. Heated the contents of the beaker and recorded the following observations.
Substance dissolved	Temperature (in K)
	283	293	313	333	353
	Solubility
I. Potassium nitrate	21	32	62	106	167
II. Sodium chloride	36	36	36	37	37
III. Potassium chloride	35	35	40	46	54
IV. Ammonium chloride	24	37	41	55	66

Solubility of which substance is highest at 283 K?

A) I                    

B) III

C) IV                                            

D) II