Verbal Reasoning - Mental Ability Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

X_ZX_YY_ZX_Z

Pointing towards a girl, Rajan said, she is the daughter of my mother's daughter. Then how is the girl related to Rajan?

Choose the related word/letters/number from the given alternatives. RARE : ERAR : : ROCKET : ?

In a certain code language, “MOCKS” is written as “NNDJT”. How is “FLAME” written in that code language?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. NOM, QRP, TUS, ?

In the following question, select the related word from the given alternatives.
Goiter : Iodine : : Anemia : ?

In a certain code language, "BISLERI" is written as "IREBISL". How is "PANTHER" written in that code language?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

P_P_RPQ_S_Q_ST