My dau is 10 weeks old. She screams and screams. Is it that she wants attention? Please advice. When I carry her she keeps quiet and smiling always.

It's natural for babies to cry and scream when they are put down/can't see you, it's a survival mechanism built into human beings, a sense of abandonment that kicks in pretty quickly in young babies because they can not survive without somebody else. At 10 weeks, it's not as if she's consciously thinking "I want just some attention, I'm going to scream until I get it". Be patient and it'll get better with age.