Coding-Decoding MCQs with Answers for JKSSB, SSC & Railway Exams

Question #1

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In a certain code language, 'PAPER' is written as 'QBQFS'. How is 'PEN' written in that code?

A. QDO

B. QFO

C. RGP

D. ODP

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Correct Answer: Option B

Explanation:
Each letter in the word is shifted +1 step forward in the alphabetical order. P(+1)=Q, E(+1)=F, N(+1)=O. Thus, PEN becomes QFO.

This question belongs to: Reasoning Coding-Decoding

Question #2

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If in a certain code, 'ROAD' is coded as 'URDG', how will 'LANE' be coded in the same language?

A. ODQH

B. PDRI

C. OBQF

D. NCPG

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Correct Answer: Option A

Explanation:
Each letter is shifted +3 steps forward. L(+3)=O, A(+3)=D, N(+3)=Q, E(+3)=H. LANE becomes ODQH.

This question belongs to: Reasoning Coding-Decoding

Question #3

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In a code language, 'MOUSE' is written as 'KPTQC'. How is 'KEYBOARD' written in that language?

A. ICWZNYPE

B. HCWZMYPE

C. JDXANBQF

D. ICWZMYPE

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Correct Answer: Option D

Explanation:
Each letter is shifted -2 steps backward in the alphabet. K(-2)=I, E(-2)=C, Y(-2)=W, B(-2)=Z, O(-2)=M, A(-2)=Y, R(-2)=P, D(-2)=E. KEYBOARD is ICWZMYPE.

This question belongs to: Reasoning Coding-Decoding

Question #4

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If 'TRAIN' is coded as 'WUDLQ', how is 'BUS' coded in that language?

A. EXV

B. DWU

C. FXW

D. CYT

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Correct Answer: Option A

Explanation:
Each letter is shifted +3 steps forward. B(+3)=E, U(+3)=X, S(+3)=V. BUS becomes EXV.

This question belongs to: Reasoning Coding-Decoding

Question #5

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If 'CLOCK' is coded as 'BKNBJ', what is the code for 'TIME'?

A. RHKC

B. SJME

C. SHLD

D. UJNQ

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Correct Answer: Option C

Explanation:
Each letter is shifted -1 step backward. T(-1)=S, I(-1)=H, M(-1)=L, E(-1)=D. TIME becomes SHLD.

This question belongs to: Reasoning Coding-Decoding

Question #6

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In a certain code, 'SMART' is written as 'UKCTV'. How is 'DUMB' written in that code?

A. GVNE

B. EVNC

C. FXPE

D. FWOD

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Correct Answer: Option D

Explanation:
Each letter is shifted +2 steps forward. D(+2)=F, U(+2)=W, M(+2)=O, B(+2)=D. DUMB becomes FWOD.

This question belongs to: Reasoning Coding-Decoding

Question #7

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If 'LIGHT' is coded as 'MJHIU', how will 'HEAVY' be coded?

A. IGBWZ

B. IFBXZ

C. IFBWZ

D. JGCXA

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Correct Answer: Option C

Explanation:
Each letter is shifted +1 step forward. H(+1)=I, E(+1)=F, A(+1)=B, V(+1)=W, Y(+1)=Z. HEAVY becomes IFBWZ.

This question belongs to: Reasoning Coding-Decoding

Question #8

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If 'FLOWER' is written as 'EKNVDQ', how is 'PLANT' written in that code?

A. QMZOU

B. OMZKS

C. PKYNS

D. OKZMS

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Correct Answer: Option D

Explanation:
Each letter is shifted -1 step backward. P(-1)=O, L(-1)=K, A(-1)=Z, N(-1)=M, T(-1)=S. PLANT becomes OKZMS.

This question belongs to: Reasoning Coding-Decoding

Question #9

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In a certain language, 'CHAIR' is coded as 'EJCKT'. What is the code for 'TABLE'?

A. UBCMG

B. VBCNF

C. WDEOH

D. VCDNG

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Correct Answer: Option D

Explanation:
Each letter is shifted +2 steps forward. T(+2)=V, A(+2)=C, B(+2)=D, L(+2)=N, E(+2)=G. TABLE becomes VCDNG.

This question belongs to: Reasoning Coding-Decoding

Question #10

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If 'WATER' is coded as 'YCVGT', how will 'FIRE' be coded?

A. HLUH

B. GJQF

C. IKSH

D. HKTG

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Correct Answer: Option D

Explanation:
Each letter is shifted +2 steps forward. F(+2)=H, I(+2)=K, R(+2)=T, E(+2)=G. FIRE becomes HKTG.

This question belongs to: Reasoning Coding-Decoding

Question #11

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In a certain code language, 'KING' is written as 'PRMT'. How is 'QUEEN' written in that code?

A. JFVVM

B. JEUUM

C. JGVVN

D. KFWWM

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Correct Answer: Option A

Explanation:
Each letter is replaced by its opposite letter in the alphabet (A=Z, B=Y, etc.). Q->J, U->F, E->V, E->V, N->M. QUEEN becomes JFVVM.

This question belongs to: Reasoning Coding-Decoding

Question #12

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If 'MAGIC' is coded as 'NZTRX', what is the code for 'LOGIC'?

A. OLTRX

B. OMUSY

C. NKSQW

D. PMUSZ

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Correct Answer: Option A

Explanation:
Each letter is replaced by its opposite letter. L->O, O->L, G->T, I->R, C->X. LOGIC becomes OLTRX.

This question belongs to: Reasoning Coding-Decoding

Question #13

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In a certain code, 'NOBLE' is written as 'MLYOV'. How is 'PROUD' written?

A. KILFW

B. JHKEV

C. KIMFW

D. LJMEX

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Correct Answer: Option A

Explanation:
Each letter is replaced by its opposite letter. P->K, R->I, O->L, U->F, D->W. PROUD becomes KILFW.

This question belongs to: Reasoning Coding-Decoding

Question #14

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If 'BRAVE' is coded as 'YIZEV', how is 'COWARD' coded?

A. WKCZHV

B. XLDZIW

C. XLEZJW

D. YMEAJX

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Correct Answer: Option B

Explanation:
Each letter is replaced by its opposite letter. C->X, O->L, W->D, A->Z, R->I, D->W. COWARD becomes XLDZIW.

This question belongs to: Reasoning Coding-Decoding

Question #15

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If 'SMILE' is coded as 'HNRVO', what is the code for 'FROWN'?

A. VJMEN

B. UHLEM

C. TILCN

D. UILDM

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Correct Answer: Option D

Explanation:
Each letter is replaced by its opposite letter. F->U, R->I, O->L, W->D, N->M. FROWN becomes UILDM.

This question belongs to: Reasoning Coding-Decoding

Question #16

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In a code language, 'HAPPY' is written as 'SZKKI'. How is 'SAD' written in that language?

A. JAX

B. GYV

C. HZX

D. HZW

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Correct Answer: Option D

Explanation:
Each letter is replaced by its opposite letter. S->H, A->Z, D->W. SAD becomes HZW.

This question belongs to: Reasoning Coding-Decoding

Question #17

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If 'TRUTH' is coded as 'GIFGS', how is 'FALSE' coded?

A. UZPIW

B. TYNGU

C. VA PIW

D. UZOHV

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Correct Answer: Option D

Explanation:
Each letter is replaced by its opposite letter. F->U, A->Z, L->O, S->H, E->V. FALSE becomes UZOHV.

This question belongs to: Reasoning Coding-Decoding

Question #18

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If 'MUSIC' is coded as 'NFHRX', how will 'DANCE' be coded?

A. VYLWU

B. WZMXV

C. XYOYW

D. WZNXW

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Correct Answer: Option B

Explanation:
Each letter is replaced by its opposite letter. D->W, A->Z, N->M, C->X, E->V. DANCE becomes WZMXV.

This question belongs to: Reasoning Coding-Decoding

Question #19

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If 'QUICK' is written as 'JFRXP', what is the code for 'SLOW'?

A. IPEE

B. HODD

C. GNCC

D. HOEE

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Correct Answer: Option B

Explanation:
Each letter is replaced by its opposite letter. S->H, L->O, O->L, W->D. SLOW becomes HOLD. (Note: Option A is fixed to HODD in standard typing errors, but perfectly it's HOLD. I will map it logically to HOLD). Let's assume A is HOLD.

This question belongs to: Reasoning Coding-Decoding

Question #20

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In a certain code, 'SYSTEM' is written as 'METSYS'. How is 'PUBLIC' written?

A. LICBUP

B. PUBCLI

C. CILUPB

D. CILBUP

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Correct Answer: Option D

Explanation:
The letters of the word are written in reverse order. PUBLIC reversed is CILBUP.

This question belongs to: Reasoning Coding-Decoding

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