DNA exists as a double helix as a result of hydrogen

'Force' is related to 'Newton' in the same way as 'Pressure' is related to _______ .

Dog : Bitch : : Drone : ?

Select the option that is related to third letter cluster in the same way as second letter cluster is related to first letter cluster.

NIL: SNQ :: GAP: ?

Select the option that is related to the third term in the same way as the second term is related to the first term.

STRAIT : TTSRIA :: EMPHASIS : ?

Which letter cluster will replace the question mark (?) to complete the given series?

abCD, fgHI, ?, stUV, abCD

Select the number from among the given options that can replace the question mark (?) in the following series.

4, 21, 85, 256, 513, ?

Bird : Fly :: Lion ::  ?

If

‘White’ is called ‘Blue’,

‘Blue’ is called ‘Red’,

‘Red’ is called ‘Yellow’,