In a certain code language 'MATHEMATICS' is written as 'LBSIDNZUHDR'. How is 'CHEMISTRY' written in that code language?
BIDNHTSSX
Correct Option - 2.

The pattern followed here is:-
For the letters in odd places(1 st ,3 rd .5 th .7 th .9 th ,11 th ) Positional value of the letter - 1
For the letters in even places(2 nd .4 th .6 th .8 th ,10 th ) Positional value of the letter + 1

similarly,

Hence, the code for "CHEMISTRY" is "BIDNHTSSX".
Therefore, option 2 is correct.
In a certain code, GARNISH is written as RGAINHS. How will GENIOUS be written in that code?
In a certain code, BEAN is written as ABNE and SALE is written as LSEA. How is NEWS written in that code?