Hi, welcome to the forum and HAPPY FRIENDSHIP DAY!!
Search in the update section u will find it there.
By the way in the first episode it was Kashish Birthday and the whole family celebrates it. She goes to chemist shop to buy her father's medicines. And there he is our sweeto Sujal, who comes there to buy the same medicine.
There is only one bottle available.So Kashish asks for two Rs.50 notes from him. Thats the cost of medicine, Rs.50.So he has no Rs.50 notes left.So she gets the bottle. When she comes out she falls and all the flour drops on her. Instead of helping her he gives her 50 ka note, takes the bottle and goes. Thats the famous chemist scene.