What Deficiency does the below rebus represent?

VIT_MIN

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Forwards I am heavy, backward I am not. What am I?

How many triangles are there in the picture below?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

Move four matchsticks to the below square to form three squares?

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

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?