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Day 546: JEE Mains Chemistry

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

  1. Question 1

    Chemical Thermodynamics. Asked once: 2021 Paper 8

    50
    During which of the following processes, does entropy decrease? (A) Freezing of water to ice at 0∘C0^{\circ}C (B) Freezing of water to ice at −10∘C-10^{\circ}C (C) N2( g)+3H2( g)→2NH3( g)N_{2}(\text{ }g) + 3H_{2}(\text{ }g) \rightarrow 2NH_{3}(\text{ }g) (D) Adsorption of CO(g)CO(g) on lead surface (E) Dissolution of NaClNaCl in water

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  2. Question 2

    Haloalkanes and Haloarenes. Asked once: 2021 Paper 16

    21
    CH4+I2⇌CH3−I+HICH_{4}+ I_{2}\rightleftharpoons CH_{3}- I + HI Which reagent can stop backward reaction?

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  3. Question 3

    Hydrocarbons. Asked once: 13 Apr 2023

    40
    In the following reaction ' XX ' is

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  4. Question 4

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 1 Feb 2023

    140
    Given below are two statements: Statement I: Sulphanilic acid gives esterification test for carboxyl group. Statement II: Sulphanilic acid gives red colour in Lassaigne's test for extra element detection. In the light of the above statements, choose the most appropriate answer from the options given below:

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  5. Question 5

    The p-Block Elements. Asked once: 2021 Paper 25

    50
    Compound AA used as a strong oxidizing agent is amphoteric in nature. It is the part of lead storage batteries. Compound AA is:

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