Why Aeroplane windows are round?

Buy me, smell me or deliver me, I do not change.

Who am I?

Guess the hidden movie name?

Can you count the number of squares in the figure below?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

Which letter of the alphabet has the most water?

John bought a new car. He has a habit of eating ice cream from a particular ice cream shop while returning home from office. Whenever, he eats strawberry ice cream, he faces no problem. But whenever, he eats chocolate ice cream, the car starts giving problem. At first, he thinks, it is just a co-incidence but when this awkward incident happens for 3-4 times, he reports this problem to the company.

The mechanic of the company checks but finds no problem at all. The next day, when he stops by to eat chocolate ice cream, the car again starts giving problem.

Can you find the possible reason?