How many Sunnats do we have to pray when offering qasr prayers - Do we have to pay Zakat on the amount of money that we get from a 'committee'?

1.How many Sunnats do we have to pray when offering one's qasr prayers (Please tell me of all 5 prayers). My Father says that we do not have to pray 4 Sunnahs in Duhr. Please tell me the exact number of rakats (Sunnah & Fard) for a qasr namaz. And also tell me, if we are traveling out of our city, for how many days should we say our qasr prayers? What if the trip is for more than 10 days, don't we have to say our full prayers then? And one last thing regarding qasr prayers? I have a house in Lahore (I live in Faisalabad), so when I visit Lahore, do I still say qasr prayers. [What if the house is the property of one's father and not their own but as he/she is dependant on his/her father, then what's the ruling about qasr]. 2.Do we have to pay Zakat on the amount of money that we get from a 'committee'? [Committee is when a specific number of people (x number of people) give equal amount of money for the duration of specified number of months (y number of months) and each gets all the money collected in 1 month by turn. For example, 10 people pay Rs. 5000 for the duration of 10 months and therefore each receives Rs. 50,000 one month (when it's his/her turn)]. Do we have to pay Zakat on that Rs. 50,000 if the 'committee' is for less than a year's time? And what if the 'committee' exceeds one year (e.g. 15 months). Kindly let me know about this.