Keyboard words are not in alphabetical order, Why?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

What happened when the wheel was invented?

Can you spot the man between the coffee bean in the picture below ?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

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

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Why did the Girl throw the butter out of the window?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?