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UPSC Exam  >  UPSC Test  >  CSAT Preparation  >  Test: Coding & Decoding - 1 - UPSC MCQ

Coding & Decoding - 1 - UPSC Free MCQ Test with solutions


MCQ Practice Test & Solutions: Test: Coding & Decoding - 1 (10 Questions)

You can prepare effectively for UPSC CSAT Preparation with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Coding & Decoding - 1". These 10 questions have been designed by the experts with the latest curriculum of UPSC 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 15 minutes
  • - Number of Questions: 10

Sign up on EduRev for free to attempt this test and track your preparation progress.

Test: Coding & Decoding - 1 - Question 1
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Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.

If 'light' is called 'morning', 'morning' is called 'dark', 'dark' is called 'night', 'night' is called 'sunshine', and 'sunshine' is called 'dusk', when do we sleep?

Detailed Solution: Question 1

We sleep in the 'night'. but 'night' is called 'sunshine'. So, we sleep in the 'sunshine'.
Hence, option B is correct.

Test: Coding & Decoding - 1 - Question 2
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Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.

If 'orange' is called 'butter', 'butter' is called 'soap', 'soap' is called 'ink', 'ink' is called 'honey' and 'honey' is called 'orange', which of the following is used for washing clothes ?

Detailed Solution: Question 2

  • The item normally used for washing clothes is soap.
  • According to the given substitutions, the word representing soap in the coded language is ink.

Therefore the coded word for the washing agent is ink, which matches option E.

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Test: Coding & Decoding - 1 - Question 3
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In a certain code language, ‘MOST’ is written as ‘134’ and ‘FUR’ is written as ‘90’. How will ‘SUCCESS’ be written in that language?

Detailed Solution: Question 3

Logic: Addition of alphabet positional value × 2 = Code

‘MOST’ is written as ‘134’

⇒ M(13) + O(15) + S(19) + T(20) = 67 × 2 = 134

And,

‘FUR’ is written as ‘90’

⇒ F(6) + U(21) + R(18) = 45 × 2 = 90

Similarly,

‘SUCCESS’ be written as '?'

⇒ S(19) + U(21) + C(3) + C(3) + E(5) + S(19) + S(19) = 89 × 2 = 178

Hence, the correct answer is "178".

Test: Coding & Decoding - 1 - Question 4
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Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.

If 'dust' is called 'air', 'air' is called 'fire', 'fire' is called 'water', 'water' is called 'colour', 'colour' is called 'rain', and 'rain' is called 'dust', then where do fish live ?

Detailed Solution: Question 4

Fishes live in 'water' and as given, 'water' is called 'colour'. so fishes live in 'colour' .

Hence, option C is correct.

Test: Coding & Decoding - 1 - Question 5
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In a certain code language, ' first of all' is written as 'kan dan san', who is first' is written as 'zan kan ven', and 'this is pale' is written as 'ven gen len'. How will 'who' be written in that language?

Detailed Solution: Question 5

To determine how 'who' is written in the code language:

1. Identify common words and corresponding codes:
- 'first' = 'kan' (common in both 'first of all' and 'who is first')
- 'is' = 'ven' (common in 'who is first' and 'this is pale')

2. Compare phrases:
- 'first of all' = 'kan dan san'
- 'who is first' = 'zan kan ven'

The remaining code 'zan' must represent 'who'.
Hence, option A is correct.

Test: Coding & Decoding - 1 - Question 6
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Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.

If 'lead' is called 'stick', 'stick' is called 'nib', 'nib' is called 'needle', 'needle' is called 'rope' and 'rope' is called 'thread', what will be fitted in a pen to write with it ?

Detailed Solution: Question 6

Clearly, a 'nib' is fitted in the pen to write with it. But 'nib' is called 'needle'. So, a 'needle' will be fitted in the pen.

Hence, option C is correct.

Test: Coding & Decoding - 1 - Question 7
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Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.

If 'bat' is 'racket', 'racket' is 'football', 'football' is 'shuttle', 'shuttle' is 'ludo' and 'ludo' is 'carrom', what is cricket played with?

Detailed Solution: Question 7

Cricket is played with a 'bat' and 'bat' is called 'racket'. So, cricket is played with 'racket'.

Hence, option A is correct

Test: Coding & Decoding - 1 - Question 8
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Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.

If 'sand' is called 'air', 'air' is called 'plateau', 'plateau' is called 'well', 'well' is called 'island' and 'island' is called 'sky', then from where will a woman draw water?

Detailed Solution: Question 8

A woman shall draw water from a 'well' but a 'well' is called 'island' . So, the woman will draw water from an 'island'.

Hence, option B is correct.

Test: Coding & Decoding - 1 - Question 9
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Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.

If 'cushion' is called 'pillow', 'pillow' is called 'mat', 'mat' is called 'bedsheet' and 'bedsheet' is called 'cover', which will be spread on the floor ?

Detailed Solution: Question 9

'mat' will be spread on the floor But 'mat' is called 'bedsheet'.So, a 'bedsheet' will be spread on the floor.

Hence, option B is correct.

Test: Coding & Decoding - 1 - Question 10
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Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.

If 'rain' is 'water', 'water' is 'road', 'road' is 'cloud', 'cloud' is 'sky', 'sky' is 'sea' and 'sea' is 'path', where do aero planes fly ?

Detailed Solution: Question 10

  1. According to the code:

    • “sky” is called “sea.”

  2. Therefore, in this coded language, airplanes fly in the sea.

Explanation: Whenever you see the word “sky,” you must read it as “sea.” Since planes fly in the sky, in the code they fly in the sea.

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About this UPSC Practice Test

This test contains 10 MCQs on Coding & Decoding - 1 with detailed solutions for each question. It is part of the CSAT Preparation course on EduRev, designed to align with the current UPSC syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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