What do you see in the given picture?

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

If an electric train is travelling south, then which way is the smoke going?

Can you replace the question mark with the correct number in the below table sequence?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

I know a nine-letter word having only one vowel.
Do you ?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?