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Day 237: JEE Mains Chemistry

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

  1. Question 1

    Electrochemistry. Asked once: 29 Jun 2022 (same type asked 4 times) See all 4 of this type

    144
    The cell potential for the given cell at 298 K298\text{ }K Pt ∣H2\mid H_{2} (g, 1 bar) ∣H+\mid H^{+}(aq) ∥Cu2+(aq)∣Cu(s)\parallel Cu^{2 +}(aq) \mid Cu(s) is 0.31 V0.31\text{ }V. The pHpH of the acidic solution is found to be 3 , whereas the concentration of Cu2+Cu^{2 +} is 10−xM10^{- x}M. The value of xx is (Given: ECu2+/CuΘ=0.34 VE_{Cu^{2 +}/Cu}^{\Theta}= 0.34\text{ }V and 2.303RTF=0.06 V\frac{2.303RT}{F}= 0.06\text{ }V )

  2. Question 2

    Alcohols, Phenols and Ethers. Asked once: 26 Jun 2022 (same type asked 4 times) See all 4 of this type

    59
    Compound ' PP ' on nitration with dil. HNO3HNO_{3} yields two isomers (a) and (b). These isomers can be separated by steam distillation. Isomers (a) and (b) show the intramolecular and intermolecular hydrogen bonding respectively. Compound (P)(P) on reaction with conc. HNO3HNO_{3} yields a yellow compound ' CC ', a strong acid. The number of oxygen atoms is present in compound ' CC '

  3. Question 3

    Amines. Asked once: 2021 Paper 11 (same type asked 4 times) See all 4 of this type

    37
    Organic compound A with CHCl3/KOHCHCl_{3}/KOH gives product BB which can be decomposed by H+/H2OH^{+}/H_{2}O ?

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  4. Question 4

    Coordination Compounds. Asked once: 27 Jul 2022 (same type asked 4 times) See all 4 of this type

    130
    Low oxidation state of metals in their complexes are common when ligands:

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  5. Question 5

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 8 Apr 2023 (same type asked 4 times) See all 4 of this type

    137
    The descending order of acidity for the following carboxylic acid is : (A) CH3COOHCH_{3}COOH (B) F3C−COOHF_{3}C - COOH (C) ClCH2−COOHClCH_{2}- COOH (D) FCH2−COOHFCH_{2}- COOH (E) BrCH2−COOHBrCH_{2}- COOH Choose the correct answer from the options given below:

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