Solution:

The two bars are equal in length.

Explanation:
It's an optical illusion that makes you believe that bar A is longer because of the railway tracks.

Solution:

Sansa has the siamese (conjoined) twin sister.

Solution:

Zouma is 3 and has two footballs.
Ake is 1 and has one football.
Kalas is 4 and has three footballs.
Aina is 2 and has four footballs.

Solution:

I will be thrown at lions. Now if Akbar threw him at lions, Birbal’s statement will stand true and he will have to bury him alive. But if he bury him, the statement will emerge as false. Thus he had no choice left

Solution:

In the picture you can find the green matchsticks. We have moved them from the bottom and placed them in the middle. It was a bit tricky but now you have your desired result.

Solution:

The attached picture shows you how you can do it. If you were able to deduce any other way, feel free to comment.

Solution:

7, 4, 6, 5, 8

Solution:

The Password.

Explanation:
Clues 2 and 5 are correct and rest are lies.

Solution:

Hockey Stick $49.50 & ball $0.50

Solution:

I + IX = X

The equation read from the other side becomes X = XI + I which is false.

Solution:

111111111

Explanation:
It's a maths magical square root series as :
Square root of number 121 is 11
Square root of number 12321 is 111
Square root of number 1234321 is 1111
Square root of number 123454321 is 11111
Square root of number 12345654321 is 111111
Square root of number 1234567654321 is 1111111
Square root of number 123456787654321 is 11111111
Square root of number 12345678987654321 is 111111111 (answer)