PYQ Vault
EbooksTutor

Day 305: JEE Mains Chemistry

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

  1. Question 1

    Biomolecules. Asked once: 6 Apr 2023 (same type asked 4 times) See all 4 of this type

    123
    Match List I with List II.
    List I (Natural amino acid)List II (One letter code)
    (A)Arginine(I)D
    (B)Aspartic acid(II)N
    (C)Asparagine(III)A
    (D)Alanine(IV)R
    Choose the correct answer from the options given below:

    Tap an option to check your answer.

  2. Question 2

    Classification of Elements and Periodicity. Asked once: 2021 Paper 12 (same type asked 4 times) See all 4 of this type

    23
    An element has the valence shell configuration 4s24p14s^{2}4p^{1}. Identify the element that lies diagonally next to it, in the next period of the p-block.

    Tap an option to check your answer.

  3. Question 3

    Solutions. Asked once: 4 Apr 2024 (same type asked 4 times) See all 4 of this type

    58
    2.5 g2.5\text{ }g of a non-volatile, non-electrolyte is dissolved in 100 g100\text{ }g of water at 25∘C25^{\circ}C. The solution showed a boiling point elevation by 2∘C2^{\circ}C. Assuming the solute concentration in negligible with respect to the solvent concentration, the vapour pressure of the resulting aqueous solution is ____ mmmm of HgHg (nearest integer) [Given: Molal boiling point elevation constant of water (Kb)=0.52 K.kgmol−1\left( K_{b} \right)= 0.52\text{ }K.kgmol^{- 1}, 1 atm1\text{ }atm pressure =760 mm= 760\text{ }mm of HgHg, molar mass of water  =18 g mol−1]\left. \ = 18\text{ }g{\text{ }mol}^{- 1} \right\rbrack

  4. Question 4

    The p-Block Elements. Asked once: 29 Jan 2024 (same type asked 4 times) See all 4 of this type

    140
    Anomalous behaviour of oxygen is due to its

    Tap an option to check your answer.

  5. Question 5

    Equilibrium. Asked once: 28 Jul 2022 (same type asked 4 times) See all 4 of this type

    55
    KaK_{a} for butyric acid (C3H7COOH)\left( C_{3}H_{7}COOH \right) is 2×10−52 \times10^{- 5}. The pHpH of 0.2M0.2M solution of butyric acid is ____\_\_\_\_ ×10−1\times10^{- 1}. (Nearest integer) [Given log⁡2=0.30\log2 = 0.30 ]