never only when its a kitten.
As much as the average cat. Not all cats like to be cuddled all day but all cats need attention. Play and cuddle with your cat and see how long it is until the cat squirms or try's to get away. You wont know for sure until you test it.
No a cat's pH is totally different from a human's http://www.adelaidevet.com.au/can-i-bath-my-cat
all you have to do is wash
It is generally safe to wash your cat with shampoo specifically made for cats, as long as you follow the instructions and rinse thoroughly. However, it is important to consult with a veterinarian before bathing your cat to ensure it is appropriate for their specific needs.
Usually until it is all gone
A cat is considered a kitten from birth until around 1 year of age.
Until the stitches are taken off and healed.
DOG shampoo is for DOGS. CAT shampoo is for CATS. Depending on how young the kitten is, you may not be able to wash it with even cat shampoo. Always check with your vet.
all its life
Either you wash over several times or put an air freshener in there for some long period of time. It helps. If that doesn't work, then put tomato paste or juice on it and wash it with detergent.
Cats are usually very clean animals and will spend hours cleaning themselves therefore there is no need to wash a cat unless it has an accident and gets exceptionally dirty.
No, tori, it isn't.