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Day 337: JEE Mains Chemistry

5 questions. Try each one first, then open its answer.

  1. Question 1

    Electrochemistry. Asked once: 2021 Paper 17 (same type asked 5 times) See all 5 of this type

    60
    For the cell Cu(s)∣Cu2+(aq)(0.1M)∥Ag+Cu(s) \mid Cu^{2 +}(aq)(0.1M) \parallel Ag^{+}(aq) (0.01M) \| Ag(s)Ag(s) the cell potential E1=0.3095 VE_{1}= 0.3095\text{ }V For the cell Cu(s)∣Cu2+Cu(s) \mid Cu^{2 +} (aq) (0.01 M) ∥Ag+\parallel Ag^{+}(aq) (0.001 M) ∣Ag(s)\mid Ag(s) the cell potential == ×10−2 V\times10^{- 2}\text{ }V. (Round off the Nearest Integer). [Use: 2.303RTF=0.059\frac{2.303RT}{F}= 0.059 ]

  2. Question 2

    Haloalkanes and Haloarenes. Asked once: 2021 Paper 22 (same type asked 5 times) See all 5 of this type

    31
    The correct order of reactivity of the given chlorides with acetate in acetic acid is:

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  3. Question 3

    The d- and f-Block Elements. Asked once: 14 Jun 2022 (same type asked 5 times) See all 5 of this type

    147
    Manganese (VI) has ability to disproportionate in acidic solution. The difference in oxidation states of two ions it forms in acidic solution is

  4. Question 4

    Coordination Compounds. Asked once: 2021 Paper 14 (same type asked 5 times) See all 5 of this type

    35
    Empirical formula of an octahedral complex is CrCl3.3NH3.3H2OCrCl_{3}.3NH_{3}.3H_{2}O. It precipitates 3 moles of AgClAgCl. Find the secondary valency of the central atom.

  5. Question 5

    Biomolecules. Asked once: 14 Jun 2022 (same type asked 5 times) See all 5 of this type

    48
    A polysaccharide 'XX' on boiling with dil H2SO4H_{2}SO_{4} at 393 K393\text{ }K under 2-3 atm pressure yields 'YY'. 'YY' on treatment with bromine water gives gluconic acid. 'XX' contains β\beta-glycosidic linkages only. Compound 'XX' is:

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