Q: According to Islam, is mercy killing for animals permitted?

Q: Is the animal research where mice and pigs are the subjects of medical research involving giving them certain experimental medicine as a trial before trying it on humans to see the adverse effects of the medicine or killing them for the purpose of research or as an ultimate end point of research permissible?

What if it is done with an intention of human benefit as humans cannot be the trial subjects in the frst phase of the research when adverse effects of a medication or intervention is not known and if animlas are not tried, research projects cannot go on and newer medical interventions/medications, diagnostic tools and treatment will not evolve. Is this kind of research considered to be a zulm on animals?

Q: Is it correct that the only people who will inherit from the deceased are the husband, wife, children and parents? Is it compulsory for these heirs to inherit from the deceased, and as far as other relatives are concerned, their receiving inheritance is optional? 

Q: About 5 years ago, I took an oath that I will not get involved with any female. If I did, then my nikah with her will terminate. Presently, my wife treats me badly, we do not share a bed. I am told to sleep in another room. I want to know, if I can withdraw my oath, as the scenario has changed? I am told to just issue her with her freedom, as she has been unhappy for the past 25 years.

Q: If someone's father bought a lot of property in his life, but in the beginning, if he took a loan from the bank and mixed it with the money he earned to purchase some properties, if the father dies then is all the property halaal for his children? Because the father included the bank loan amount and bank takes interest when giving a loan.

Q: Is it permissible to do share marketing. For example, I bought 100 shares of Reliance Communication for 35 Indian rupees per share. Suddenly the share value increased to 38 Indian rupees. So I sell the 100 shares on the same day and got a profit 300 Indian rupees. Is this halaal or not?

Q:

1. Is insuring one's business halal or haram?

2. Is working in an insurance business allowed in Islam? 

Q: How much gold/silver am I allowed to give each of my unmarried daughters?

Q: As we undertand, men should not hear the voice of a na-mahram woman. How about hearing na-mahram men’s voices by women?

Q: I live in a country where car insurance is mandatory, without which one cannot drive and get anywhere. Out of necessity we got a car insurance.

Recently, my mother got in a car accident (it was not her fault, she was hit from behind) and was injured (she has a concussion and pain in her head). Per the insurance rules, she was to be given treatments (physiotherapy and so on) as well as compensation money due to her injury. The insurance company did not give her the compensation money or pay for her treatment costs completely. She wasn't event told she could receive compensation.

Later, she talked to a lawyer who was introduced by her friend who told her about it. Now she is making a claim against the insurance company to receive proper treatments (with all costs covered) as well as compensation money.

Is this compensation money halal to use?