Pictures of silhouettes, limbs of a person and pictures with no face

Q: I draw and paint for a hobby but I am confused on this topic Islamically due to many different opinions. Is it permissible to:

1. Draw a full body picture without the eyes, nose and mouth?

2. Draw a limb on its own. (e.g. a hand holding a flower). But it is connected to the end of the paper. Does it have to be drawn severed?

3. Draw a full body with an umbrella covering the head?

4. Draw silhouettes of living creatures e.g. humans, birds, etc. (If this is not permissible then can I draw birds as a 'm' shape in the distance?)

Developing a social media app where people will post pictures

Q: I am a medical student who is also interested in web development, therefore I was thinking of developing a social media app similar to Facebook where people would be able to post photos. What I am concerned about is if people start to post immoral/obscene photos about which I am pretty sure they will on the website. Will I be sinning since I am providing a platform for such content??

Marrying a Christian

Q: My question is regarding marriage. I wish to marry a devout Christian woman however, her father or any of her family do not approve of me because I am a Muslim. I wish to marry her very soon because of the fear that I may fall into zina. I have taken all precautions and I do not meet with her anymore because I know it is haraam but I am so scared that I will fall into zina. What should I do?

I know that a woman needs a wali and the wali has to be from her religion so I can’t take her to the Islamic centre so that the imam can be her wali can I? Or does she not need a wali since she is independent financially and has her own place and is 45 years old. This woman is very special to me but, I also do not want to fall into sin. If I don’t marry her soon I really think I will fall into zina. please help. (I am from the Hambali mazhab so can you please answer according to this mazhab).

Status of nikaah if a man lied to a girl just to get married to her

Q: If a woman marries a man based on what he told her and later on she finds out that the man was untruthful, meaning he lied about everything just to get her to marry him. Is the nikaah invalid? Especially if he lied about being a practising Muslim which it turned out that he wasn't? Does she need to do iddat even if she only stayed with him for a week and she didn't engage in intercourse because she was on her period with this untruthful man?

Investing in an electrical store

Q: I am from a Muslim country. I am planning to invest in a business with a friend in which the friend of my father repairs electronic equipment like fans, washing machines, ovens, irons, etc. and also installs electricity in newly built houses and sells electric items.

My question is that is this type of business halal as we provide our service and the user of all these things will use them for some haraam things like they will watch movies, listen to music and this kind of stuff. In general, is an electric store business permissible?

Performing salaah at home if there is social distancing in one's masjid

Q: With the distances of one meter at the Masjid, some people prefer to perform their salaat in jamaat in other private places (like in a house) with their shoulders together. They perform the five salaat and the jumuah salaat in houses with their shoulders together? Is it correct? Or is it better for these people to come to the Masjid ?