SSC CGL Coding-Decoding Mock Test 2026: Practice Questions with Answers
Coding-Decoding looks simple when the rule is visible, but SSC questions become confusing when letters are shifted, reversed, converted into numbers or hidden inside a code language. Many students understand the solution after seeing it, yet lose time finding the rule during the exam. This mock is designed to train that first step: identify the pattern quickly and apply it without changing the rule midway.
Decode the Rule Before the Clock Moves
Coding-Decoding is one of those Reasoning topics where speed matters almost as much as accuracy. A student may know alphabetical positions very well, but still waste time because every new question is treated like a completely new puzzle. A better approach is to first check a small set of common possibilities: fixed letter shift, reverse order, opposite alphabet, alphabetical value, position-based shift or common-word coding.
This SSC CGL Coding-Decoding Mock Test 2026 contains 25 original questions covering letter coding, number coding, word arrangement, common-word code language and mixed coding rules. It is a focused SSC CGL Tier-I practice set with a timer, negative marking, detailed answers and topic-wise analysis.
SSC CGL General Intelligence and Reasoning has 25 questions for 50 marks in Tier-I, with a 15-minute sectional timer and 0.50 negative marking for each wrong answer. The official syllabus also includes small and capital letters/numbers coding, decoding and classification. This page uses that 25-question, 15-minute, +2 and -0.50 framework only as focused Coding-Decoding practice. Check the official SSC notice.
Find the rule before doing the calculation
Do not start shifting letters randomly. First compare the given word and code. Check whether the order changed, whether every letter moved by the same amount, or whether letters were converted into positions.
Every letter moves one step forward. The important part is recognising the fixed +1 rule quickly.
Mock test instructions
Your Coding-Decoding Result
Case-wise accuracy
See which type of coding is costing marks.
Answer investigation
Review explanations and speed clues before another attempt.
Close the case and submit?
Your responses will be scored with +2 for correct and -0.50 for wrong answers.
How to Solve Coding-Decoding Faster in SSC CGL
You do not need a new trick for every question. Most Coding-Decoding problems become easier when you test common rules in a fixed order.
See whether the word is simply reversed or rearranged before testing alphabet shifts.
Check +1, -1, fixed shifts, opposite alphabet and position-based shifts.
In code language, match common words with common codes and eliminate them.
Related SSC CGL Reasoning Practice
After this topic mock, use a broader Reasoning set or revise the complete strategy.
SSC CGL Coding-Decoding Mock Test FAQs
Yes. The official syllabus includes coding, decoding and classification involving small letters, capital letters and numbers.
No. Tier-I Reasoning has 25 questions from the complete syllabus. This page uses 25 questions only for focused topic practice.
Start with alphabetical positions, forward and backward shifts, opposite alphabet pairs and reversing words.
Correct +2, wrong -0.50 and unattempted 0, matching the Tier-I marking framework.
This version is SSC CGL-specific with a 15-minute timer, Tier-I scoring, a different question set and a completely different interface.
Because wrong answers carry negative marking, it is better to return later if the pattern is taking too long and you cannot eliminate options confidently.
