I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

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

Find the smallest sentence with all the English alphabet.

It is always ahead of me yet I can never see it. What is it?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Which is the correct shadow of the bird?

Which Travels Faster? Solve below famous picture riddle:

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?