Verbal Reasoning - Mental Ability Questions

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
Morning, Afternoon, Evening, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

DM, EN, FO, ?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?

a_ ca_c_dc_d_ad_

In a certain code language, '-' represents '+', '+' represents 'x', 'x' represents '÷' and '÷' represents '-'. Find out the answer to the following question.

8 ÷ 6 - 5 + 70 x 10 = ?

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

In the following question, select the related word from the given alternatives.
Frog : Amphibian : : Lizard : ?

A is D's brother. D is the son of Mrs. C. B is Mrs. C's father. How is A related to B?

Select the related word/letters/numbers from the given alternatives:
3 : 243 :: 5 : ?