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Day 176: JEE Mains Chemistry

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

  1. Question 1

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 30 Jan 2024 (same type asked 3 times) See all 3 of this type

    40
    Structure of 4-Methylpent-2-enal is

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  2. Question 2

    Some Basic Concepts of Chemistry. Asked once: 27 Jul 2022 (same type asked 3 times) See all 3 of this type

    58
    In the titration of KMnO4KMnO_{4} and oxalic acid in acidic medium, the change in oxidation number of carbon at the end point is

  3. Question 3

    Structure of Atom. Asked once: 30 Jan 2023 (same type asked 3 times) See all 3 of this type

    52
    The energy of one mole of photons of radiation of frequency 2×1012 Hz2 \times10^{12}\ \mathrm{Hz} in J mol−1\mathrm{J\ mol^{-1}} is ____. (Nearest integer) [Given: h=6.626×10−34Jsh = 6.626 \times10^{- 34}Js
     NA=6.022×1023 mol−1]\left. \ N_{A}= 6.022 \times10^{23}{\text{ }mol}^{- 1} \right\rbrack

  4. Question 4

    Haloalkanes and Haloarenes. Asked once: 13 Apr 2023 (same type asked 3 times) See all 3 of this type

    41
    2-Methyl propyl bromide reacts with C2H5O−C_{2}H_{5}O^{-}and gives ' AA ' whereas on reaction with C2H5OHC_{2}H_{5}OH it gives ' BB '. The mechanism followed in these reactions and the products ' AA ' and ' BB ' respectively are:

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  5. Question 5

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 2021 Paper 4 (same type asked 3 times) See all 3 of this type

    48
    Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?

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