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Free RRB Group D Chemistry Mock Test – 25 MCQs, science GK Free mock test

Chemical Bonding MCQ – Free RRB Group D Chemistry Mock Test | TopperIQ

RRB Group D Chemistry Mock Test — Chemical Bonding & Reactions

Practice 25 free MCQ on Chemical Bonding and Chemical Reactions for RRB Group D, RRB NTPC & Railway exams. Covers Ionic Bond, Covalent Bond, Metallic Bond, Hydrogen Bond, and all major reaction types — with 25-min timer, instant score & explanations in English, Hindi, Bengali & Nepali.

⚛️ Ionic Bond ๐Ÿ”— Covalent Bond ๐Ÿ”ฉ Metallic Bond ๐Ÿ’ง Hydrogen Bond ๐Ÿ”ฅ Combination Reaction ๐Ÿ’ฅ Decomposition ⚡ Redox Reaction ↔️ Displacement ๐Ÿ“ Electronegativity ⚖️ Law of Conservation
๐Ÿ“ 25 Questions ⏱ 25 Minutes ๐ŸŒ 4 Languages ✅ Free & Instant Score ๐Ÿ“„ PDF Scorecard

Chemistry Mock Test — Set 1

Chemistry · Chemical Bonding & Reactions · 25 Questions · 25 Min

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    Frequently Asked Questions — Chemical Bonding & Reactions

    What is a chemical bond?
    A chemical bond is an attractive force between atoms or ions that holds them together in a compound. The four main types are: Ionic bond (electron transfer between metal and non-metal), Covalent bond (electron pair sharing between non-metals), Metallic bond (sea of delocalised electrons), and Hydrogen bond (dipole-dipole attraction involving H bonded to F, O, or N).
    What type of bond is present in NaCl?
    NaCl (sodium chloride) contains an ionic bond. Sodium (Na) transfers one electron to chlorine (Cl), forming Na⁺ and Cl⁻ ions. The electrostatic attraction between these oppositely charged ions is the ionic bond. Ionic bonds form between metals and non-metals.
    What are the types of chemical reactions asked in RRB Group D?
    RRB Group D commonly asks about: Combination reaction (A + B → AB), Decomposition reaction (AB → A + B), Single displacement (A + BC → AC + B), Double displacement (AB + CD → AD + CB), Redox reaction (simultaneous oxidation and reduction), Exothermic reaction (heat released) and Endothermic reaction (heat absorbed).
    Which element has the highest electronegativity?
    Fluorine (F) has the highest electronegativity of all elements — Pauling scale value of 3.98. The order is: F (3.98) > O (3.44) > Cl (3.16) > N (3.04). Fluorine's small atomic radius and high nuclear charge make it attract bonding electrons most strongly.
    เฆฐাเฆธাเฆฏ়เฆจিเฆ• เฆฌเฆจ্เฆงเฆจ เฆ•ী? (What is chemical bonding in Bengali?)
    เฆฐাเฆธাเฆฏ়เฆจিเฆ• เฆฌเฆจ্เฆงเฆจ เฆนเฆฒ เฆชเฆฐเฆฎাเฆฃুเฆ—ুเฆฒিเฆฐ เฆฎเฆง্เฆฏে เฆ†เฆ•เฆฐ্เฆทเฆฃ เฆถเฆ•্เฆคি เฆฏা เฆคাเฆฆেเฆฐ เฆเฆ•เฆค্เฆฐিเฆค เฆ•เฆฐে เฆฏৌเฆ— เฆฌা เฆ…เฆฃু เฆ—เฆ เฆจ เฆ•เฆฐে। เฆช্เฆฐเฆงাเฆจ เฆช্เฆฐเฆ•াเฆฐ: เฆ†เฆฏ়เฆจিเฆ• เฆฌเฆจ্เฆงเฆจ (เฆ‡เฆฒেเฆ•เฆŸ্เฆฐเฆจ เฆธ্เฆฅাเฆจাเฆจ্เฆคเฆฐ), เฆธเฆฎเฆฏোเฆœী เฆฌเฆจ্เฆงเฆจ (เฆ‡เฆฒেเฆ•เฆŸ্เฆฐเฆจ เฆญাเฆ—াเฆญাเฆ—ি), เฆงাเฆคเฆฌ เฆฌเฆจ্เฆงเฆจ เฆเฆฌং เฆนাเฆ‡เฆก্เฆฐোเฆœেเฆจ เฆฌเฆจ্เฆงเฆจ
    เคฐाเคธाเคฏเคจिเค• เคฌंเคง เค•िเคคเคจे เคช्เคฐเค•ाเคฐ เค•े เคนोเคคे เคนैं? (How many types of chemical bonds?)
    เคฐाเคธाเคฏเคจिเค• เคฌंเคง เค•े เคฎुเค–्เคฏเคคः 4 เคช्เคฐเค•ाเคฐ เคนोเคคे เคนैं: เค†เคฏเคจिเค• เคฌंเคง (เค‡เคฒेเค•्เคŸ्เคฐॉเคจ เคธ्เคฅाเคจांเคคเคฐเคฃ — เคœैเคธे NaCl), เคธเคนเคธंเคฏोเคœเค• เคฌंเคง (เค‡เคฒेเค•्เคŸ्เคฐॉเคจ เคธाเคाเค•เคฐเคฃ — เคœैเคธे H₂O, CO₂), เคงाเคค्เคตिเค• เคฌंเคง (เคฎुเค•्เคค เค‡เคฒेเค•्เคŸ्เคฐॉเคจ เคธाเค—เคฐ) เค”เคฐ เคนाเค‡เคก्เคฐोเคœเคจ เคฌंเคง (H—F, H—O, H—N เคฎें)। RRB Group D เคชเคฐीเค•्เคทा เคฎें เค‡เคจ เคธเคญी เคธे เคช्เคฐเคถ्เคจ เคชूเค›े เคœाเคคे เคนैं।
    What is OIL RIG in chemistry?
    OIL RIG is a mnemonic for redox reactions: Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons). In any redox reaction, oxidation and reduction always occur simultaneously. The substance that loses electrons is the reducing agent; the one that gains electrons is the oxidising agent.