What is wrong in the below Picture?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

Who is that with a neck and no head, two arms and no hands? What is it?

Can you tell a 3D object that has just two surfaces?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

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.

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Can you count the number of triangles in the given picture?