खालीलपैकी कोणत्या मूलद्रव्याची विद्युतऋणता (electronegativity) सर्वात जास्त आहे?
This MPSC previous-year question is drawn from MPSC Rajyaseva (State Services) Combined Pre 2026 (Marathi). It belongs to the Science section and is reproduced here in Marathi exactly as it appeared in the official Maharashtra Public Service Commission paper, along with the four options, the official Set A answer key and a compact explanation of why the correct option is correct.
Correct answer: C
Explanation
सोडवत गेल्यास पर्याय C येतो. सर्व मूलद्रव्यांत फ्ल्युओरीनची विद्युतऋणता सर्वाधिक असून ते आवर्तसारणीच्या वरच्या-उजव्या टोकाला असते. ऑक्सिजन, नायट्रोजन व क्लोरीनही विद्युतऋण आहेत, पण फ्ल्युओरीनला कोणी मागे टाकत नाही.
Why this question matters
Questions of this type recur almost every year across MPSC Group B, Group C, PSI and Gazetted Civil Services prelims because science carries a high, stable weightage in the syllabus. Practising the original paper wording — rather than paraphrased mock questions — is the fastest way to internalise MPSC's option-framing style and the specific way its examiners plant trick choices.
How to attempt this in the exam
Cover the options with your hand and try to answer the question in your own words first. Then reveal the options and pick the one closest to your mental answer. This inversion habit is especially valuable for science items where three of the four options are designed to be superficially plausible.
Subject-specific tip
Tip for Science: write the underlying formula or chemical equation in the margin. MPSC Science numericals are usually one-step substitutions; the trap is in the units, not the concept.
General Science for MPSC — school-syllabus foundations
MPSC's General Science section stays close to the State Board and NCERT Class 8–10 syllabus. Physics contributes numerical items on motion, force, work-energy, sound, light (reflection / refraction / lenses), electricity (Ohm's law, series-parallel circuits) and magnetism. Chemistry contributes acids-bases-salts, atomic structure, the periodic table, chemical bonding, common industrial processes (contact process for H₂SO₄, Haber's process for NH₃) and everyday chemistry (soaps, plastics, alloys). Biology carries the largest share — cell structure, plant kingdom classification, animal kingdom classification, human physiology (digestive, respiratory, circulatory, excretory, nervous, endocrine systems), reproduction, genetics and communicable diseases.
The single highest-yield chapter is human physiology — every MPSC prelim in the last decade has at least four questions from it. Learn each system as a triplet: the primary organ, the primary hormone or enzyme, and the primary disease if the system malfunctions. That triplet compresses hundreds of textbook pages into a memorable one-line schema per system.
Modern topics MPSC has started asking include: renewable-energy technologies (solar PV, wind, biofuels), space technology (ISRO's launch vehicles PSLV / GSLV / SSLV, recent Chandrayaan-3 and Aditya L1 missions), biotechnology (CRISPR, mRNA vaccines) and environment (climate-change protocols from Kyoto 1997 through Paris 2015 to Glasgow COP26). Our Science topic-wise packs on the practice page include 41 dedicated tests covering every one of these subjects.
Source and editorial process
Source: MPSC Rajyaseva (State Services) Combined Pre 2026 (Marathi). This question, its four options and the marked correct answer are transcribed verbatim from the official Maharashtra Public Service Commission Set A paper. Our editorial team cross-checks each question against the original PDF released on mpsc.gov.in and against the corresponding official answer key.
We never paraphrase the wording. Where MPSC has issued a revised key after an objection round, the answer highlighted above reflects the revised key and the revision is logged in our internal change-log. If you spot a discrepancy, please email us at dontknowacademy@gmail.com — we acknowledge every report within 24 hours and push a fix within 48 hours.
Related study material
Deepen your preparation on this topic with our long-form MPSC study guides. Every guide is written specifically for the Maharashtra Public Service Commission preliminary syllabus and takes twelve to sixteen minutes to read in full.
- MPSC Exam PatternGroup B, Group C, PSI, Gazetted CS & TS prelims — marks, syllabus, negative marking, cut-offs.
- MPSC Preparation Strategy6-month plan, book list, daily routine, PYQ usage, mock-test strategy.
- Indian Polity for MPSCConstitution, Fundamental Rights, DPSPs, Parliament, state government, key amendments.
Practice the full subject
MPSC Rajyaseva (State Services) Combined Pre 2026 (Marathi)
Practice more questionsAbout MPSC PYQ QUIZ
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