Can you find the key in the picture below?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

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

Can you find out the missing number in the grid?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?