yes

yes

Basically your income and expenses incurred in deriving it.....

how they know? U don't want to know how they know.....if they know and found you didn't pay, you wish you would never ask this question 

cost of driving uber such as petrol and car maintenance can be deducted against uber taxable income. So if you're good at keeping receipt, you'll be making a loss instead and thus they got nothing to tax you.

Submit as other income in Form BE

Photostate
yes