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Day 147: JEE Mains Chemistry

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

  1. Question 1

    Alcohols, Phenols and Ethers. Asked once: 23 Jan 2025 (same type asked 4 times) See all 4 of this type

    117
    Identify the products [A]\lbrack A\rbrack and [B]\lbrack B\rbrack, respectively in the following reaction : chlorobenzene →(ii) H+(i) NaOH, 623 K, 300 atm[A]→Na2Cr2O7H2SO4[B]\xrightarrow[(ii)\ H^{+}]{(i)\ NaOH,\ 623\ K,\ 300\ atm}\left\lbrack A \right\rbrack\underset{H_{2}SO_{4}}{\overset{Na_{2}Cr_{2}O_{7}}{\rightarrow}}\lbrack B\rbrack

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  2. Question 2

    Amines. Asked once: 3 Apr 2025 (same type asked 4 times) See all 4 of this type

    117
    The sequence from the following that would result in giving predominantly 3,4,53,4,5- Tribromo aniline is:

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  3. Question 3

    Chemical Thermodynamics. Asked once: 24 Jan 2025 (same type asked 4 times) See all 4 of this type

    33
    Let us consider an endothermic reaction which is non-spontaneous at the freezing point of water. However, the reaction is spontaneous at boiling point of water. Choose the correct option.

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  4. Question 4

    Equilibrium. Asked once: 29 Jan 2023 (same type asked 4 times) See all 4 of this type

    51
    Millimoles of calcium hydroxide required to produce 100 mL100\text{ }mL of the aqueous solution of pH 12 is x×10−1x \times 10^{-1}. The value of xx is (Nearest integer). Assume complete dissociation.

  5. Question 5

    Biomolecules. Asked once: 31 Jan 2024 (same type asked 4 times) See all 4 of this type

    149
    From the vitamins A, B1, B6, B12,C,D,EB_{1},{\text{ }B}_{6},{\text{ }B}_{12},C,D,E and KK, the number of vitamins that can be stored in our body is _____