Something which is likely to decay

Find the odd one out :

Axe, Dagger, Arrow, Knife

Choose the alternative which closely resembles the mirror image of the given combination.

In a certain code language, 'MINT' is coded as '9735' and 'NEAR' is coded as '4568'.

What is the code for 'N' in the given code language? 

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

Conditions – (i) If the second element and the last element are perfect squares, then the second and last elements are to be coded as ©.

In a code language, 'PARUL' is coded as RDTXN and 'MADHU' is coded as ODFKW. How will 'VIJAY' be coded in the same language?

JM12 is related to EH15 in a certain way. In the same way, QT34 is related to LO37. To which of the following is SV 23 related following the same logic?

In the following question, select the related letters from the given alternatives.

PTX : RVZ :: CGK : ? 

Which of the following letter-clusters will replace the question mark (?) in the given series?

UHS, OJQ, ILO, ENM, ?

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

Resistance : Ohm :: Angle : ?