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Coding–Decoding - Letter, Number, Substitution, Mixed Coding, Decoding Messages - MCQ Questions with Answers for Competitive Exams 2025

Practice important Coding–Decoding questions for competitive exams like UPSC, SSC CGL, SSC CHSL, Banking (IBPS PO, IBPS Clerk, SBI), Railway (RRB NTPC, Group D), and State PSC. Each question includes detailed explanations in Hindi & English to help you understand the concepts thoroughly. Click "View Answer" to see the correct option and explanation.

1. If ‘APPLE’ = ‘BQQMF’, what is ‘MANGO’? / यदि ‘APPLE’ = ‘BQQMF’, तो ‘MANGO’ क्या होगा?

2. If ‘STONE’ = ‘TUPOF’, then ‘ROCK’ = ? / यदि ‘STONE’ = ‘TUPOF’, तो ‘ROCK’ = ?

3. In a code, ‘KING’ = LJOH. What does ‘QUEEN’ stand for? / कोड में ‘KING’ = LJOH है। तो ‘QUEEN’ के लिए कोड क्या होगा?

4. यदि ‘HELLO’ को ‘JGNNQ’ लिखा जाता है, तो ‘WORLD’ का कोड क्या होगा? / If ‘HELLO’=‘JGNNQ’, find the code for ‘WORLD’.

5. If ‘BOOK’ = ‘DSSR’, what is ‘PAGE’? / यदि ‘BOOK’ = ‘DSSR’, तो ‘PAGE’ क्या है?

6. If ‘DATA’ = ‘GEXE’, what is ‘CODE’? / यदि ‘DATA’=‘GEXE’, तो ‘CODE’=?

7. ‘AIR’ = ‘DLC’, then ‘SKY’ = ? / यदि ‘AIR’ = ‘DLC’, तो ‘SKY’ = ?

8. If ‘BOY’ = ‘CPZ’, find ‘GIRL’. / यदि ‘BOY’ = ‘CPZ’, तो ‘GIRL’ ज्ञात करें।

9. If ‘HOUSE’ = ‘IPVTF’, what is ‘ROOM’? / यदि ‘HOUSE’=‘IPVTF’, तो ‘ROOM’=?

10. ‘PEN’=‘QFO’, then ‘PAPER’=? / ‘PEN’=‘QFO’, तो ‘PAPER’=?

11. If ‘SUGAR’=‘TVHBS’, find ‘TEA’. / यदि ‘SUGAR’=‘TVHBS’, तो ‘TEA’=?

12. If ‘KING’ = ‘LJOH’, then ‘QUEEN’ = ? / यदि ‘KING’ = ‘LJOH’, तो ‘QUEEN’ = ?

13. अगर ‘CAT’ = ‘DBU’, तो ‘DOG’ = ? / If ‘CAT’ = ‘DBU’, then ‘DOG’ = ?

14. ‘TRAIN’ = ‘USBJO’. Find ‘PLANE’. / ‘TRAIN’ = ‘USBJO’. ‘PLANE’ ज्ञात करें।

15. If ‘TREE’ = ‘VTGG’, find ‘FLOWER’. / यदि ‘TREE’ = ‘VTGG’, तो ‘FLOWER’ ज्ञात करें।

16. यदि ‘HELLO’ को ‘JGNNQ’ लिखा जाता है, तो ‘BYE’ का कोड क्या होगा? / If ‘HELLO’=‘JGNNQ’, what is ‘BYE’?

17. If ‘EARTH’ = ‘FBSUI’, find ‘WORLD’. / यदि ‘EARTH’=‘FBSUI’, तो ‘WORLD’=?

18. ‘SIT’ = ‘TKU’, find ‘RUN’. / ‘SIT’=‘TKU’, ‘RUN’ ज्ञात करें।

19. If ‘PAPER’ = ‘QBQFS’, then ‘PEN’ = ? / यदि ‘PAPER’=‘QBQFS’, तो ‘PEN’=?

20. ‘LIGHT’ = ‘MJHIU’, find ‘BULB’. / ‘LIGHT’=‘MJHIU’, तो ‘BULB’ ज्ञात करें।

21. In a code, ‘RED’ = ‘SFE’. What is ‘PINK’? / किसी कोड में ‘RED’=‘SFE’ है। ‘PINK’ क्या होगा?

22. ‘WALL’ = ‘XBMM’, find ‘DOOR’. / ‘WALL’=‘XBMM’, तो ‘DOOR’ ज्ञात करें।

23. If ‘CAT’=‘FDW’, what is ‘DOG’? / यदि ‘CAT’=‘FDW’, तो ‘DOG’=?

24. ‘EAR’=‘HZG’, find ‘EYE’. / ‘EAR’=‘HZG’, तो ‘EYE’=?

25. ‘NOTE’=‘OPUF’, find ‘SONG’. / ‘NOTE’=‘OPUF’, तो ‘SONG’=?

26. अगर ‘TABLE’=‘UDCMF’, तो ‘CHAIR’=? / If ‘TABLE’=‘UDCMF’, then ‘CHAIR’=?

27. ‘FISH’=‘GKTI’, find ‘MEAT’. / ‘FISH’=‘GKTI’, तो ‘MEAT’=?

28. ‘SOAP’=‘TRBQ’, find ‘SHAMPOO’. / ‘SOAP’=‘TRBQ’, तो ‘SHAMPOO’=?

29. If ‘FOX’=‘GPY’, what is ‘COW’? / यदि ‘FOX’=‘GPY’, तो ‘COW’=?

30. ‘RAT’=‘SBU’, find ‘BAT’. / ‘RAT’=‘SBU’, तो ‘BAT’=?

31. If ‘COLD’=‘DPME’, find ‘HEAT’. / यदि ‘COLD’=‘DPME’, तो ‘HEAT’=?

32. If ‘NOSE’ = ‘OPTG’, then ‘EARS’ = ? / यदि ‘NOSE’ = ‘OPTG’, तो ‘EARS’ = ?

33. ‘FACE’=‘GBDC’, find ‘NOSE’. / ‘FACE’=‘GBDC’, तो ‘NOSE’=?

34. If ‘EYES’=‘FZFT’, what is ‘MOUTH’? / यदि ‘EYES’=‘FZFT’, तो ‘MOUTH’=?

35. In a code, ‘DOOR’=EPPQ, ‘WINDOW’=? / किसी कोड में ‘DOOR’=EPPQ, तो ‘WINDOW’=?

36. If ‘FRUIT’=‘GSVJU’, find ‘PLANT’. / यदि ‘FRUIT’=‘GSVJU’, तो ‘PLANT’=?

37. If ‘CHAIR’=‘DIBJS’, then ‘TABLE’=? / यदि ‘CHAIR’=‘DIBJS’, तो ‘TABLE’=?

38. ‘TIME’=‘UINF’, find ‘WATCH’. / ‘TIME’=‘UINF’, तो ‘WATCH’=?

39. If ‘SUGAR’=‘VXDDS’, what is ‘TEA’? / यदि ‘SUGAR’=‘VXDDS’, तो ‘TEA’=?

40. ‘STONE’=‘UTQPG’, then ‘ROCK’=? / ‘STONE’=‘UTQPG’, तो ‘ROCK’=?

41. If ‘BOOK’=‘FSOO’, find ‘READ’. / यदि ‘BOOK’=‘FSOO’, तो ‘READ’=?

42. ‘LION’=‘NIQP’, find ‘TIGER’=? / ‘LION’=‘NIQP’, तो ‘TIGER’=?

43. In a code, ‘LIGHT’=‘MJKIU’, then ‘NIGHT’=? / किसी कोड में ‘LIGHT’=‘MJKIU’, तो ‘NIGHT’=?

44. ‘KING’ = ‘LJOH’ then ‘RANI’ = ? / ‘KING’ = ‘LJOH’, तो ‘RANI’=?

45. If ‘EARTH’=‘GBTUI’, then ‘PLANET’=? / यदि ‘EARTH’=‘GBTUI’, तो ‘PLANET’=?

46. ‘WATER’=XBUFS, then BLOOD=? / ‘WATER’=XBUFS, तो BLOOD=?

47. ‘COLD’=‘DPME’, ‘HOT’=? / ‘COLD’=‘DPME’, तो ‘HOT’=?

48. If ‘MILK’=NJML, find BREAD’. / यदि ‘MILK’=NJML, तो ‘BREAD’=?

49. In a code, ‘ROAD’=SPBE. Find ‘WAY’. / किसी कोड में ‘ROAD’=SPBE. तो ‘WAY’ क्या होगा?

50. ‘HOME’=‘IPNF’, find ‘HOUSE’. / ‘HOME’=‘IPNF’, तो ‘HOUSE’=?

Important General Knowledge Questions | Coding–Decoding GK in Hindi

Coding–Decoding - Letter, Number, Substitution, Mixed Coding, Decoding Messages - MCQ Questions with Answers for Competitive Exams 2025

1. If ‘APPLE’﻿ = ‘BQQMF’﻿, what is ‘MANGO’﻿? / यदि ‘APPLE’﻿ = ‘BQQMF’﻿, तो ‘MANGO’﻿ क्या होगा?

2. If ‘STONE’﻿ = ‘TUPOF’﻿, then ‘ROCK’﻿ = ? / यदि ‘STONE’﻿ = ‘TUPOF’﻿, तो ‘ROCK’﻿ = ?

3. In a code, ‘KING’﻿ = LJOH﻿. What does ‘QUEEN’﻿ stand for? / कोड में ‘KING’﻿ = LJOH﻿ है। तो ‘QUEEN’﻿ के लिए कोड क्या होगा?

4. यदि ‘HELLO’﻿ को ‘JGNNQ’﻿ लिखा जाता है, तो ‘WORLD’﻿ का कोड क्या होगा? / If ‘HELLO’﻿=‘JGNNQ’﻿, find the code for ‘WORLD’﻿.

5. If ‘BOOK’﻿ = ‘DSSR’﻿, what is ‘PAGE’﻿? / यदि ‘BOOK’﻿ = ‘DSSR’﻿, तो ‘PAGE’﻿ क्या है?

6. If ‘DATA’﻿ = ‘GEXE’﻿, what is ‘CODE’﻿? / यदि ‘DATA’﻿=‘GEXE’﻿, तो ‘CODE’﻿=?

7. ‘AIR’﻿ = ‘DLC’﻿, then ‘SKY’﻿ = ? / यदि ‘AIR’﻿ = ‘DLC’﻿, तो ‘SKY’﻿ = ?

8. If ‘BOY’﻿ = ‘CPZ’﻿, find ‘GIRL’﻿. / यदि ‘BOY’﻿ = ‘CPZ’﻿, तो ‘GIRL’﻿ ज्ञात करें।

9. If ‘HOUSE’﻿ = ‘IPVTF’﻿, what is ‘ROOM’﻿? / यदि ‘HOUSE’﻿=‘IPVTF’﻿, तो ‘ROOM’﻿=?

10. ‘PEN’﻿=‘QFO’﻿, then ‘PAPER’﻿=? / ‘PEN’﻿=‘QFO’﻿, तो ‘PAPER’﻿=?

11. If ‘SUGAR’﻿=‘TVHBS’﻿, find ‘TEA’﻿. / यदि ‘SUGAR’﻿=‘TVHBS’﻿, तो ‘TEA’﻿=?

12. If ‘KING’﻿ = ‘LJOH’﻿, then ‘QUEEN’﻿ = ? / यदि ‘KING’﻿ = ‘LJOH’﻿, तो ‘QUEEN’﻿ = ?

13. अगर ‘CAT’﻿ = ‘DBU’﻿, तो ‘DOG’﻿ = ? / If ‘CAT’﻿ = ‘DBU’﻿, then ‘DOG’﻿ = ?

14. ‘TRAIN’﻿ = ‘USBJO’﻿. Find ‘PLANE’﻿. / ‘TRAIN’﻿ = ‘USBJO’﻿. ‘PLANE’﻿ ज्ञात करें।

15. If ‘TREE’﻿ = ‘VTGG’﻿, find ‘FLOWER’﻿. / यदि ‘TREE’﻿ = ‘VTGG’﻿, तो ‘FLOWER’﻿ ज्ञात करें।

16. यदि ‘HELLO’﻿ को ‘JGNNQ’﻿ लिखा जाता है, तो ‘BYE’﻿ का कोड क्या होगा? / If ‘HELLO’﻿=‘JGNNQ’﻿, what is ‘BYE’﻿?

17. If ‘EARTH’﻿ = ‘FBSUI’﻿, find ‘WORLD’﻿. / यदि ‘EARTH’﻿=‘FBSUI’﻿, तो ‘WORLD’﻿=?

18. ‘SIT’﻿ = ‘TKU’﻿, find ‘RUN’﻿. / ‘SIT’﻿=‘TKU’﻿, ‘RUN’﻿ ज्ञात करें।

19. If ‘PAPER’﻿ = ‘QBQFS’﻿, then ‘PEN’﻿ = ? / यदि ‘PAPER’﻿=‘QBQFS’﻿, तो ‘PEN’﻿=?

20. ‘LIGHT’﻿ = ‘MJHIU’﻿, find ‘BULB’﻿. / ‘LIGHT’﻿=‘MJHIU’﻿, तो ‘BULB’﻿ ज्ञात करें।

21. In a code, ‘RED’﻿ = ‘SFE’﻿. What is ‘PINK’﻿? / किसी कोड में ‘RED’﻿=‘SFE’﻿ है। ‘PINK’﻿ क्या होगा?

22. ‘WALL’﻿ = ‘XBMM’﻿, find ‘DOOR’﻿. / ‘WALL’﻿=‘XBMM’﻿, तो ‘DOOR’﻿ ज्ञात करें।

23. If ‘CAT’﻿=‘FDW’﻿, what is ‘DOG’﻿? / यदि ‘CAT’﻿=‘FDW’﻿, तो ‘DOG’﻿=?

24. ‘EAR’﻿=‘HZG’﻿, find ‘EYE’﻿. / ‘EAR’﻿=‘HZG’﻿, तो ‘EYE’﻿=?

25. ‘NOTE’﻿=‘OPUF’﻿, find ‘SONG’﻿. / ‘NOTE’﻿=‘OPUF’﻿, तो ‘SONG’﻿=?

26. अगर ‘TABLE’﻿=‘UDCMF’﻿, तो ‘CHAIR’﻿=? / If ‘TABLE’﻿=‘UDCMF’﻿, then ‘CHAIR’﻿=?

27. ‘FISH’﻿=‘GKTI’﻿, find ‘MEAT’﻿. / ‘FISH’﻿=‘GKTI’﻿, तो ‘MEAT’﻿=?

28. ‘SOAP’﻿=‘TRBQ’﻿, find ‘SHAMPOO’﻿. / ‘SOAP’﻿=‘TRBQ’﻿, तो ‘SHAMPOO’﻿=?

29. If ‘FOX’﻿=‘GPY’﻿, what is ‘COW’﻿? / यदि ‘FOX’﻿=‘GPY’﻿, तो ‘COW’﻿=?

30. ‘RAT’﻿=‘SBU’﻿, find ‘BAT’﻿. / ‘RAT’﻿=‘SBU’﻿, तो ‘BAT’﻿=?

31. If ‘COLD’﻿=‘DPME’﻿, find ‘HEAT’﻿. / यदि ‘COLD’﻿=‘DPME’﻿, तो ‘HEAT’﻿=?

32. If ‘NOSE’﻿ = ‘OPTG’﻿, then ‘EARS’﻿ = ? / यदि ‘NOSE’﻿ = ‘OPTG’﻿, तो ‘EARS’﻿ = ?

33. ‘FACE’﻿=‘GBDC’﻿, find ‘NOSE’﻿. / ‘FACE’﻿=‘GBDC’﻿, तो ‘NOSE’﻿=?

34. If ‘EYES’﻿=‘FZFT’﻿, what is ‘MOUTH’﻿? / यदि ‘EYES’﻿=‘FZFT’﻿, तो ‘MOUTH’﻿=?

35. In a code, ‘DOOR’﻿=EPPQ﻿, ‘WINDOW’﻿=? / किसी कोड में ‘DOOR’﻿=EPPQ﻿, तो ‘WINDOW’﻿=?

36. If ‘FRUIT’﻿=‘GSVJU’﻿, find ‘PLANT’﻿. / यदि ‘FRUIT’﻿=‘GSVJU’﻿, तो ‘PLANT’﻿=?

37. If ‘CHAIR’﻿=‘DIBJS’﻿, then ‘TABLE’﻿=? / यदि ‘CHAIR’﻿=‘DIBJS’﻿, तो ‘TABLE’﻿=?

38. ‘TIME’﻿=‘UINF’﻿, find ‘WATCH’﻿. / ‘TIME’﻿=‘UINF’﻿, तो ‘WATCH’﻿=?

39. If ‘SUGAR’﻿=‘VXDDS’﻿, what is ‘TEA’﻿? / यदि ‘SUGAR’﻿=‘VXDDS’﻿, तो ‘TEA’﻿=?

40. ‘STONE’﻿=‘UTQPG’﻿, then ‘ROCK’﻿=? / ‘STONE’﻿=‘UTQPG’﻿, तो ‘ROCK’﻿=?

41. If ‘BOOK’﻿=‘FSOO’﻿, find ‘READ’﻿. / यदि ‘BOOK’﻿=‘FSOO’﻿, तो ‘READ’﻿=?

42. ‘LION’﻿=‘NIQP’﻿, find ‘TIGER’﻿=? / ‘LION’﻿=‘NIQP’﻿, तो ‘TIGER’﻿=?

43. In a code, ‘LIGHT’﻿=‘MJKIU’﻿, then ‘NIGHT’﻿=? / किसी कोड में ‘LIGHT’﻿=‘MJKIU’﻿, तो ‘NIGHT’﻿=?

44. ‘KING’﻿ = ‘LJOH’﻿ then ‘RANI’﻿ = ? / ‘KING’﻿ = ‘LJOH’﻿, तो ‘RANI’﻿=?

45. If ‘EARTH’﻿=‘GBTUI’﻿, then ‘PLANET’﻿=? / यदि ‘EARTH’﻿=‘GBTUI’﻿, तो ‘PLANET’﻿=?

46. ‘WATER’﻿=XBUFS﻿, then BLOOD﻿=? / ‘WATER’﻿=XBUFS﻿, तो BLOOD﻿=?

47. ‘COLD’﻿=‘DPME’﻿, ‘HOT’﻿=? / ‘COLD’﻿=‘DPME’﻿, तो ‘HOT’﻿=?

48. If ‘MILK’﻿=NJML﻿, find BREAD’﻿. / यदि ‘MILK’﻿=NJML﻿, तो ‘BREAD’﻿=?

49. In a code, ‘ROAD’﻿=SPBE﻿. Find ‘WAY’﻿. / किसी कोड में ‘ROAD’﻿=SPBE﻿. तो ‘WAY’﻿ क्या होगा?

50. ‘HOME’﻿=‘IPNF’﻿, find ‘HOUSE’﻿. / ‘HOME’﻿=‘IPNF’﻿, तो ‘HOUSE’﻿=?

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