In the English alphabet series, how many consonants are there between the second and the last vowel?

Which of the following diagrams represents smokers, lawyers, non-smokers ?

Which figure represents Rhombus, Quadrilaterals, Polygons?

Which of the following Venn Diagram gives the relationship between Friend, Guide and Philosopher ?

Which one of the following figures represents the statement:

All the persons know English.
 Few of them know Hindi also.
 Those who know Hindi know Bengali.

The series given below contains a sequence of numbers. Identify the incorrect combination.
5, 6, 7, 8, 10, 11, 13, 15, 19

If PARTICLE is coded RCTVKENG, then how is SCIENCE coded?

Which letter should be 7th to the right of the 12th letter from left, if first half of the alphabet series is reversed?