Verbal Reasoning - Mental Ability Questions

In the following question, select the related word from the given alternatives.
Calendar : Date : : Index : ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. AB, GH, MN, ST, ?

Gopal is older than Mohan but younger than Ram. Mohan is older than Sohan but younger than Ram. Who is the oldest?

Some equations are solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

5 x 4 x 3 = 70 ,
6 x 5 x 4 = 140
7 x 6 x 5 = ?

In the following question, select the odd number from the given alternatives.

In the following question, select the related word from the given alternatives.
Pressure : Barometer : : ? : Odometer

Choose the best suitable Venn diagram for the following words: transport vehicle, truck, van

There are 45 trees in a row. The lemon tree is 20th from right end. What is the rank of lemon tree from left end?