PYQ Vault

Day 151: JEE Mains Chemistry

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

  1. Question 1

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

    56
    If the solubility product of PbSPbS is 8×10−288 \times10^{- 28}, then the solubility of PbSPbS in pure water at 298 K298\text{ }K is x×10−16 mol L−1x \times10^{- 16}\text{ }mol{\text{ }L}^{- 1}. The value of xx is ____(Nearest Integer) [Given 2=1.41\sqrt{2}= 1.41 ]
  2. Question 2

    Alcohols, Phenols and Ethers. Asked once: 5 Apr 2024 (same type asked 4 times) See all 4 of this type

    36
    For the compounds: (A) H3C−CH2−O−CH2−CH2−CH3H_{3}C -CH_{2}- O -CH_{2}-CH_{2}-CH_{3} (B) H3C−CH2−CH2−CH2−CH3H_{3}C -CH_{2}-CH_{2}-CH_{2}-CH_{3} (C) CH3−CH2−CO−CH2−CH3CH_{3}-CH_{2}-CO-CH_{2}-CH_{3} (D) CH3−CH(OH)−CH2−CH2−CH3CH_{3}-CH(OH)-CH_{2}-CH_{2}-CH_{3} The increasing order of boiling point is: Choose the correct answer from the options given below:

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  3. Question 3

    The d- and f-Block Elements. Asked once: 8 Apr 2024 (same type asked 4 times) See all 4 of this type

    131
    The equilibrium Cr2O72−⇌2CrO42−Cr_{2}O_{7}^{2 -}\rightleftharpoons 2CrO_{4}^{2 -} is shifted to the right in:

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  4. Question 4

    Electrochemistry. Asked once: 29 Jan 2024 (same type asked 4 times) See all 4 of this type

    149
    A constant current was passed through a solution of AuCl4−AuCl_{4}^{-}ion between gold electrodes. After a period of 10.0 minutes, the increase in mass of cathode was 1.314 g1.314\text{ }g. The total charge passed through the solution is _______ ×10−2 F\times10^{- 2}\text{ }F. (Given atomic mass of Au=197Au = 197)
  5. Question 5

    Some Basic Concepts of Chemistry. Asked once: 24 Jan 2023 (same type asked 4 times) See all 4 of this type

    54
     5 g\ 5\text{ }g of NaOHNaOH was dissolved in deionized water to prepare a 450 mL450\text{ }mL stock solution. What volume (in mLmL ) of this solution would be required to prepare 500 mL500\text{ }mL of 0.1M0.1M solution? Given: Molar Mass of Na,ONa,O and HH is 23,16 and 1 g mol−11\text{ }g{\text{ }mol}^{- 1} respectively