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Day 96: JEE Mains Chemistry

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

  1. Question 1

    Classification of Elements and Periodicity. This type asked 2 times: 2021 Paper 6, 24 Jan 2025. This one: 24 Jan 2025 See all 2 of this type

    120
    The successive 5 ionisation energies of an element are 800,2427,3658,25024800,2427,3658,25024 and 32824 kJ/mol32824\text{ }kJ/mol, respectively. By using the above values predict the group in which the above element is present :

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  2. Question 2

    Some Basic Concepts of Chemistry. This type asked 2 times: 2021 Paper 17, 24 Jan 2025. This one: 24 Jan 2025 See all 2 of this type

    39
    For a reaction, N2O5( g)→2NO2( g)+12O2( g)N_{2}O_{5(\text{ }g)}\rightarrow 2NO_{2(\text{ }g)}+\frac{1}{2}O_{2(\text{ }g)} in a constant volume container, no products were present initially. The final pressure of the system when 50%50\% of reaction gets completed is

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  3. Question 3

    The d- and f-Block Elements. This type asked 2 times: 9 Apr 2024, 24 Jan 2025. This one: 24 Jan 2025 See all 2 of this type

    108
    Find the compound 'A' from the following reaction sequences.
    A→aqua−regiaB  →(1)KNO2[NH4OH](2)AcOHyellow ppt A\overset{aqua - regia}{\rightarrow}B\text{~ }\underset{\left( 2 \right)AcOH}{\overset{\left( 1 \right)KNO_{2}\lbrack NH_{4}OH\rbrack}{\rightarrow}}\text{yellow ppt~}

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  4. Question 4

    Structure of Atom. This type asked 2 times: 24 Jan 2023, 23 Jan 2025. This one: 23 Jan 2025 See all 2 of this type

    119
    Given below are two statements about X-ray spectra of elements : Statement (I) : A plot of v(v=\sqrt{v}(v = frequency of X-rays emitted) vs atomic mass is a straight line. Statement (II) : A plot of v(v=v(v = frequency of X-rays emitted) vs atomic number is a straight line. In the light of the above statements choose the correct answer from the options given below :

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  5. Question 5

    The d- and f-Block Elements. This type asked 2 times: 2021 Paper 24, 23 Jan 2025. This one: 23 Jan 2025 See all 2 of this type

    41
    The correct set of ions (aqueous solution) with same colour from the following is :

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