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CET Graduate — Coding-Decoding MCQs

Practice 20 free coding-decoding multiple choice questions for CET Graduate exam. Instant answers with explanations in Hindi and English.

Master Coding-Decoding under Mental Ability for CET Graduate with our curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English anytime.

CET Graduate — Mental Ability — Coding-Decoding

20 Questions • Instant results & explanations • Hindi & English

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Question 1 of 20

In a word substitution coding system, 'Cloud' is called 'White', 'White' is called 'Sky', 'Sky' is called 'Blue', 'Blue' is called 'Black', and 'Black' is called 'Green'. According to this specific system, what brings rain to the earth?

Question 2 of 20

Which of the following scenarios perfectly illustrates the process of 'Decoding'?

Question 3 of 20

Which of the following is NOT a standard method of coding discussed in basic reasoning?

Question 4 of 20

In the standard forward alphabetical coding system, if 'M' equals 13 and 'D' equals 4, what is the numerical value of 'M minus D', and which letter does that resulting value represent?

Question 5 of 20

If a symbolic coding rule is given as A=S, B=R, and M=%, what does this signify?

Question 6 of 20

If a coding system substitutes words such that 'Cloud' is called 'White', 'White' is called 'Sky', 'Sky' is called 'Blue', 'Blue' is called 'Black', and 'Black' is called 'Green', what is the color of an elephant in this system?

Question 7 of 20

Consider the following statements regarding the shifting of letters (e.g., A -> E): I. It involves replacing a letter with another letter located at a specific forward or backward distance in the alphabet. II. It requires memorizing the word 'Cloud is White'. Which of the statements is correct?

Question 8 of 20

Assertion (A): In coding puzzles, replacing 'A' with 'E' and 'P' with 'T' indicates a coding method based on shifting letters. Reason (R): The letters are being shifted forward by subtracting their positional values.

Question 9 of 20

Which of the following pairs correctly represents the concept of 'Opposite Letters' in coding?

Question 10 of 20

If a candidate decides to encrypt the word 'ZOO' strictly adhering to the reverse alphabetical numerical system, what integer will form the very first part of their resulting code?

Question 11 of 20

Match List-I (Coding Method) with List-II (Example) correctly: List-I P. Forward Alphabetical Coding Q. Reverse Alphabetical Coding R. Opposite Letter Coding S. Symbol Coding List-II 1. A becomes Z, B becomes Y 2. A=1, B=2, C=3 3. A=$, B=*, R=@ 4. Z=1, Y=2, X=3

Question 12 of 20

In a specific coding mechanism, 'TANU' is represented as '20-1-14-21'. Based on this exact logic, how would the word 'MAN' be coded?

Question 13 of 20

Assertion (A): If the word 'RAM' is coded strictly using forward alphabetical positions as '18-1-13', then the word 'MAT' must be coded as '13-1-20'. Reason (R): In strict forward alphabetical coding, each letter is uniformly replaced by its exact sequential integer starting from A=1.

Question 14 of 20

Consider a two-step coding process: First, find the opposite letter, then find its forward numerical position. What is the code for the letter 'C' under this system?

Question 15 of 20

In word substitution, if 'Blue' is coded as 'Black', and 'Black' is coded as 'Green', what is the actual, un-coded color of the sky?

Question 16 of 20

What is the fundamental purpose of the process known as 'coding'?

Question 17 of 20

Consider the following statements defining cryptographic processes: I. Coding is the deliberate process of transforming a meaningful sentence into a meaningless format using a secret rule. II. Decoding is the deliberate process of extracting a meaningful sentence from a meaningless format using the same secret rule. Which of the statements is correct?

Question 18 of 20

When a person attempts a coding-decoding examination question, why is memorizing an example rule considered an ineffective strategy?

Question 19 of 20

In the context of opposite letter coding, which letter represents the opposite pair for 'D'?

Question 20 of 20

Match List-I (Alphabetical ranges) with List-II (Numerical positions) for standard forward coding: List-I P. First three letters Q. Letters E, F, G R. Letters U, V, W S. Last three letters List-II 1. 24, 25, 26 2. 5, 6, 7 3. 1, 2, 3 4. 21, 22, 23

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