What do you answer even though it never asks you questions?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

In the four images below, can you find the odd one out?

Can you name four days which start with the letter 'T'?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

I have Rs.50 and I spend it in the way as below.