Coding Decoding Mock Tests

In a certain code, ROAD is written as URDG. How is WORM written in that code?

In a certain code language, if "COMPUTER" is written as "DPNQVUFS", how will "NETWORK" be written in that code?

In a certain code language, "7HS49R2" is written as "R2947HS". How will "3LM681P5" be written?

If APPLE is written as BQQMF, how is MANGO written?

In a code language, PRINT is written as 37856 and IMAGE is written as 19042. How is GRATE written in that code?

In a certain code language, "COMPUTER" is written as "DPNQVUFS". How is "KEYBOARD" written in that code?

If COLD is written as BKNC, how is GAIN written in that code?

If STUDY is coded as TVUEZ, how is PLANS coded in that code?