Choose or find odd letter group - PENAL , IDHNI , RUUD , KRTSINSA

A. PENAL

There are six cities A, B, C ,D, E and F.
A is not a hill station.
B and E are not historical places.
D is not an industrial city.
A and D are not historical cities.
A and B are not alike. Which city is a hill station and an industrial centre but not a historical places ?

A. E

Count each 7 which is not immediately preceded by 5 but is immediately followed by either 2 or 3.
How many such 7's are there ?
5  7  2  6  5  7  3  8  3  7  3  2  5  7  2  7  3  4  8  2  6  7  8

A. 2

Number of letters skipped in between adjacent letters in the series are multiples of 3.
Which of the following series observes this rule ?

A. AELPZ

Choose or find odd word - Lymphocytes , Plasma , Fibrinogen , Haemoglobin , Pepsinogen

E. PEPSINOGEN