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Some Basic Concepts of Chemistry question

2022 · Shift 2 · Q9
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Some Basic Concepts of Chemistry question

2022 · Shift 2 · Q9

JEE AdvancedChemistrySome Basic Concepts of ChemistryMultiple correct+4 / −2
To check the principle of multiple proportions, a series of pure binary compounds (PmQn)\left(\mathrm{P}_{\mathrm{m}} \mathrm{Q}_{\mathrm{n}}\right)(Pm​Qn​) were analyzed and their composition is tabulated below. The correct option(s) is(are)

Compound Weight % of P\mathrm{P}P Weight % of Q\mathrm{Q}Q
1 50 50
2 44.4 55.6
3 40 60
  1. A
    If empirical formula of compound 3 is P3Q4P_{3} Q_{4}P3​Q4​, then the empirical formula of compound 2 is P3Q5\mathrm{P}_{3} \mathrm{Q}_{5}P3​Q5​.
  2. B
    If empirical formula of compound 3 is P3Q2\mathrm{P}_{3} \mathrm{Q}_{2}P3​Q2​ and atomic weight of element P\mathrm{P}P is 20 , then the atomic weight of Q\mathrm{Q}Q is 45 .
  3. C
    If empirical formula of compound 2 is PQP QPQ, then the empirical formula of the compound 1\mathbf{1}1 is P5Q4\mathrm{P}_{5} \mathrm{Q}_{4}P5​Q4​.
  4. D
    If atomic weight of P\mathrm{P}P and Q\mathrm{Q}Q are 70 and 35 , respectively, then the empirical formula of compound 1\mathbf{1}1 is P2Q\mathrm{P}_{2} \mathrm{Q}P2​Q.
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