RRB JE CBT 2 Objectionable Questions 2026 | Non-Technical Official Answer Key Challenge

Main ideas / lessons conveyed

• Purpose of the session: Clear doubts for RRB JE CBT 2 non-technical “objectionable questions”, especially where answer keys or official framing may be questioned.

General approach to challenging questions

• Prefer NCERT-based reasoning for Science/Chemistry questions.
• If something is not present in NCERT, viewers are encouraged to challenge it—but with proper references.
• For a challenge to be persuasive, the challenger should provide source + page/chapter evidence (and ideally match the level/syllabus of the target exam).

Conceptual theme

Many “objections” revolve around whether the question is:

• Correctly aligned with the syllabus, and/or
• Clearly derivable from standard textbooks (mainly NCERT; for non-NCERT coverage, other standard books like Laxmikanth are cited).

Anti-phishing / cyber-safety lesson (non-technical)

• Avoid scams by:
  • Not falling for lucrative offers
  • Not clicking unknown links/attachments
  • Being cautious with emails—even if they look “official”
• “Paying attention” is framed as crucial, but also explained as a language/logic game:
  • Getting trapped depends on whether the information is genuine and whether you verify it.

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Detailed bullet points (methodologies / instruction-like content)

1) Verifying the Chemistry IUPAC “objectionable” alcohol question (alcohol nomenclature)

• Step-by-step logic shown by the teacher:
  • Identify the main carbon chain
  • Notice that a bracket indicates branching (treat the branch as a side group, not as part of the chain length)
  • Build the structure as depicted:
    • The main chain has a specific number of carbons, and the teacher argues not to count the bracketed part as extending the main chain
  • Identify functional group priority:
    • alcohol → -OH has high priority
  • Choose the longest/appropriate carbon chain (linear chain concept)
  • Number from the side that gives the correct/lowest possible position for the functional group (after selecting the chain)
  • Determine substituents:
    • Identify the methyl group (teacher concludes 3-methyl)
• Final naming given in the session:
  • 3-methylpentanol
  • The session claims mistakes like options resembling “hexanal” occur due to incorrectly counting carbons because of the bracket.

2) Evaluating “combination reaction” statements (two-statement question)

• Statement-check method used:
  • Apply the combination reaction rule:
    • If two or more reactants form a single product, it is a combination reaction, regardless of heat change
  • Apply heat-change classification:
    • If the reaction is exothermic (heat released), it is exothermic
• Conclusion (given example):
  • For CaO + H₂O → Ca(OH)₂ with mention of heat:
    • It matches both:
      • Combination reaction
      • Exothermic reaction

3) Spotting “email fraud/phishing” (primary reasons to fall into a trap)

• Factors listed and evaluated:
  • Greed / paying attention to lucrative offers (argued correct)
  • Not checking links/attachments from unknown senders (argued correct)
  • Providing official-looking information via email (framed as nuanced; teacher explains it can still be risky unless verified)
  • Paying attention to company logo (teacher frames this as not the main reason; logo presence alone doesn’t confirm authenticity)
• Practical verification logic emphasized:
  • Even if communications seem “official,” verify authenticity (e.g., by cross-checking).
  • The key is whether the sender/info is genuine and whether you click/open without validation.

4) Finding a file with unknown name/extension (Windows-style practical tip)

• Instructional method mentioned:
  • Use File Explorer Search (with keywords)
  • Check the Recycle Bin
  • If the extension is unknown, search using partial name/metadata
  • Use the appropriate study material PDFs/books referenced as sources for this type of question

5) Challenging an objectionable question in an exam context (general rule)

• When raising objections:
  • Provide evidence from books—ideally NCERT; otherwise use standard references (e.g., Laxmikanth for civics/polity)
  • Base objections on:
    • Syllabus coverage (expected at that class/level?)
    • Textual presence (is the relevant fact actually stated?)
    • Correctness of logic (does the solution follow textbook convention?)
• When not to challenge (teacher’s caution):
  • If it is present in NCERT at the relevant level, the teacher discourages challenges (because it’s defensible by syllabus)
  • Otherwise, you must provide a clear reference; without it, the objection may not be accepted

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Topics/questions referenced (by category)

Science / Chemistry

• IUPAC naming of an alcohol compound
  • Branch counting error due to brackets
• Combination reaction classification with heat/exothermic
• Atom model “contradicted by experiments”
  • Thomson vs neutron discovery, line spectrum, X-ray deflection, Rutherford scattering
• Biological waste / hospital occupational hazards
  • Protection measures like regular checkups, protective equipment, safe handling, predictive equipment

Non-technical / General Knowledge & Cyber

• Email fraud / phishing
  • Primary reasons for falling into traps
• Sustainable development indicators
  • GDP vs ecological footprint/biocapacity/Human Development Index
• Delta formation question
  • Reverse form of “delta” in eastern coastal plains; challenged via NCERT map/text
• National Handloom Day date
  • Framed as a repeated/asked-twice type question
• Moplah rebellion region options
  • Teacher claims lack of alignment with the cited NCERT content; uses Spectrum as reference

Polity

• Council of Ministers size limit
  • Limit discussed via Indian Constitution (Article 75), including “15% after amendment”
• President’s powers
  • commutation, reprieve, remission, respite, and “pardoning”
  • Teacher says commutation details aren’t in NCERT; cites Laxmikanth

Practical Computers

• Locating files with unknown name/extension in a large dictionary-like scenario

Study material / exam process

• Where to find PDFs in an “Exam on Education” application under free study material / non-technical
• Emotional/discussion points about:
  • paper leaks
  • deleted/changed questions
  • related complaints/concerns

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Speakers / sources featured

Speakers / presenters

• Anjana Ma’am (GK/GS current affairs contributor)
• OJHA Sir (mentioned by name; involved in discussions/teaching references)
• Main host/speaker (unnamed in subtitles)

Sources/books referenced

• NCERT (multiple mentions; e.g., Class 7 Social Science, Class 10 Science/Chemistry, Class 11)
• Spectrum (modern history reference; especially for Moplah rebellion context)
• Laxmikanth / M Laxmikanth (polity—President’s powers like commutation/remission/pardon)
• Jam Tara (mentioned as a reference related to phishing-themed awareness)

Other referenced entities

• Indian Constitution (Article 75) (cited for Council of Ministers limit question)