If in a certain language,$DIUGNAL$ is the code for $LANGUID$,which word would be coded as $ELKCAHS$?

If banana is apple,apple is grapes,grapes is mango,mango is nuts,nuts is guava,which of the following is a yellow fruit?

In a certain language,the numbers are coded as follows:

$4$	$3$	$9$	$2$	$1$	$6$	$7$	$8$	$5$	$2$	$0$
$A$	$W$	$P$	$Q$	$R$	$B$	$E$	$S$	$G$	$J$	$M$

How is $67825$ coded in that code?

If '$A$' is substituted by $1$,'$B$' by $2$ and so on up to '$Z$' which is substituted by $26$,what will be the sum of the numbers substituted for the word $DECAY$?

In a code language,$PINK$ is written as $QHOJ$ and $BOLT$ is written as $CNMS$. How would $MUST$ be written in that code?

If $MISTAKE$ is coded as $9765412$ and $NAKED$ is coded as $84123,$ how is $NEMISES$ coded?