PYQ Vault
EbooksTutor

Day 127: JEE Mains Chemistry

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

  1. Question 1

    Alcohols, Phenols and Ethers. Asked once: 23 Jan 2026 S2 (same type asked 5 times) See all 5 of this type

    41
    A mixed ether ( P ), when heated with excess of hot concentrated hydrogen iodide produces two different alkyl iodides which when treated with aq. NaOH give compounds (Q) and (R). Both (Q) and (R) give yellow precipitate with NaOI. Identify the mixed ether (P):

    Tap an option to check your answer.

  2. Question 2

    Chemical Kinetics. Asked once: 22 Jan 2026 S2 (same type asked 5 times) See all 5 of this type

    50
    Consider A→k1  BA\overset{k_{1}\ }{\rightarrow}\text{ }B and C→k2 DC\overset{k_{2}\ }{\rightarrow}D are two reactions. If the rate constant (k1)\left( k_{1} \right) of the A→BA \rightarrow B reaction can be expressed by the following equation log⁡10k=14.34−1.5×104 T/K\log_{10}k = 14.34 - \frac{1.5 \times 10^{4}}{\text{ }T/K} and activation energy of C→DC \rightarrow D reaction (Ea2)\left( {Ea}_{2} \right) is 15\frac{1}{5} th of the A→BA \rightarrow B reaction (Ea1)\left( {Ea}_{1} \right), then the value of (Ea2)\left( {Ea}_{2} \right) is ____\_\_\_\_ kJmol−1kJ{mol}^{- 1}. (Nearest Integer)

  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 6 Apr 2024 (same type asked 5 times) See all 5 of this type

    134
    The correct statements among the following, for a "chromatography" purification method is:

    Tap an option to check your answer.

  4. Question 4

    The p-Block Elements. Asked once: 4 Apr 2026 S2 (same type asked 5 times) See all 5 of this type

    33
    The electronegativity of a group 13 element ' E ' is same as that of Ge (on Pauling scale and up to one decimal point). The CORRECT statements about E3+E^{3 +} are (A) It can act as a reducing agent. (B) It can act as an oxidizing agent. (C) E3+E^{3 +} is more stable than E+E^{+}. (D) The standard electrode potential value for E3+/EE^{3 +}/E is positive. Choose the correct answer from the options given below

    Tap an option to check your answer.

  5. Question 5

    Classification of Elements and Periodicity. Asked once: 2 Apr 2026 S2 (same type asked 5 times) See all 5 of this type

    33
    The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is :

    Tap an option to check your answer.