alleryStart learning →The bond order of the oxygen molecule O₂ (by molecular orbital theory) is
- 2
- 1
- 2.5
- 3
Show answer and solution
Correct answer: A. 2
MO config gives bond order = (bonding − antibonding)/2 = (8−4)/2 = 2, consistent with the O=O double bond.
Indian Navy INET Polymers — practice questions
Explore 33 free Polymers questions in Indian Navy INET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–30 of 33.
The bond order of the oxygen molecule O₂ (by molecular orbital theory) isRead the answer and worked solution →As per your syllabus, the general formula of an alkane (saturated open-chain hydrocarbon) is which?Read the answer and worked solution →As per your syllabus, Friedel-Crafts ALKYLATION of benzene uses which reagent system?Read the answer and worked solution →JEEMAIN · Chemistry · Spot the Error — Chemistry BasicsRead the answer and worked solution →How does metallic character change down a group?Read the answer and worked solution →Which one of the following elements exhibit maximum number of valence electrons?Read the answer and worked solution →Which of the following elements would lose an electron easily?Read the answer and worked solution →Order the atomic models as they were proposedRead the answer and worked solution →Match each scientist to their modelRead the answer and worked solution →Match each model to what it could NOT explainRead the answer and worked solution →True or false: Rutherford's modelRead the answer and worked solution →True or false: Bohr's modelRead the answer and worked solution →Complete the reason Bohr's model failsRead the answer and worked solution →Which model does this belong to?Read the answer and worked solution →Match each quantum number to what it is calledRead the answer and worked solution →True or false: the quantum mechanical modelRead the answer and worked solution →Order the structure: from atom down to electronRead the answer and worked solution →Complete the (n + l) ruleRead the answer and worked solution →True or false: orbital energiesRead the answer and worked solution →Match each rule to what it forbids or requiresRead the answer and worked solution →Tap every statement Hund's rule requiresRead the answer and worked solution →The fundamental particlesRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Which principle is being described?Read the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Tap every statement true of the Schrodinger modelRead the answer and worked solution →Reading the models backRead the answer and worked solution →
Worked practice questions
As per your syllabus, the general formula of an alkane (saturated open-chain hydrocarbon) is which?
- CₙHₙ
- CₙH₂ₙ₊₂
- CₙH₂ₙ₋₂
- CₙH₂ₙ
Show answer and solution
Correct answer: B. CₙH₂ₙ₊₂
Your syllabus: alkanes follow CₙH₂ₙ₊₂.
Alkenes are CₙH₂ₙ; alkynes CₙH₂ₙ₋₂.
As per your syllabus, Friedel-Crafts ALKYLATION of benzene uses which reagent system?
- R-Cl with anhydrous AlCl₃
- R-Cl with Na in dry ether
- ROH with conc. H₂SO₄
- R-COOH with NaOH/CaO
Show answer and solution
Correct answer: A. R-Cl with anhydrous AlCl₃
Your syllabus: alkyl halide + anhydrous AlCl₃ generates R⁺, which attacks benzene to form alkylbenzene.
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