Will my hand become najis if I hold a najis cloth with a wet hand?

(1) If my hand is wet with water and I have held a najis clothe by that with wet hand will my hand also become najis. (2) If one has a women beauty parlor will her earning be halal? (3) If I am doing business of any halal thing example pens my manufacturing or investing cost is Rs 50. In which 25 rupees is haram and Rs 25 is halal and I am getting Rs 100 after selling in market, and earn the profit of Rs 50. Will my Rs 50 profit be halal? (4) Is listening to a song without music haram or with music or in both the conditions it is haram? (5) Is property dealing halal? My neighbour is doing property dealing. Can I take his food for eating? He is a Hindu. (6) If we are doing ghusl and when I put water mug on me the water passing from my body falls on bathroom floor and after falling on floor some water drops got in my bathing bucket from floor. Can that water be ok for ghusl? (7) My Quran alfaz is ok but many times when I pray namaz some alfaz do not come out properly due to little coughing problem. So will my salah be ok without repeating that alfaz during reading the Quran?