what are the threee main objectives provided by first aid?What are necessary things required for first aid box?

1) The three main objectives of a first aid are:

• To preserve life of the injured
• To prevent deterioration of the condition
• To promote recovery of the injured

2) Bandages, Band-aids, Dettol, First aid Manual, Sterile Gauze pads, Adhesive tape, antiseptic wipes, thermometer, tweezers, medicines(for head-ache, cold, cough, fever) , Burnol, scissors, tweezers, cotton are the necessary things a first aid box should contain.