Pure and Impure Items

Q: If there is dry impurity (such as pre-ejaculatory fluid) on a solid item (ex. a cellphone) and some wet hands touched it, then will the hands be considered impure? 

Q: Is it permissible to use paintbrushes made of horse hair?

Q: Is colostrum najis. The fluid from the breast’s of a pregnant woman?

Q: In my country, it is compulsory to use hand sanitizer before entering any shop for shopping, etc. All of the hand sanitizers have alcohol in it. What is the ruling regarding praying salaah, touching Quraan or eating after using it?

Q: I want to purchase some paints, but they contain glue made from animal hide. I’m not sure what animal and I also do not know whether they were slaughtered in the halaal manner. Will the paints be najis and impermissible to use?

Q: With the coronovirus going around and everyone must sanitize their hands... Is it permissible to use alcohol based hand sanitizers?

Q: I was shopping for wallets and came across one that is made of horse leather. Are products made of horse leather permissible to be used?

Q:

1. Is it permissible to use Bone Meal and Blood Meal as fertiliser in the garden?

2. If the Bone or Blood Meal goes on ones clothes will the clothes become impure?

Q: Is it permissible to have animal hide on the floor in one's house?

Q: Is it permissible to tan elephant skin?