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Day 207: JEE Mains Chemistry

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

  1. Question 1

    Chemical Bonding and Molecular Structure. Asked once: 2021 Paper 10 (same type asked 2 times) See all 2 of this type

    49
    In the following molecules, Hybridisation of carbon a,ba,b and cc respectively are :

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  2. Question 2

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 2021 Paper 20 (same type asked 2 times) See all 2 of this type

    56
    The number of moles of CuOCuO, that will be utilized in Dumas method for estimation nitrogen in a sample of 57.5 g57.5\text{ }g of N,NN,N-dimethylaminopentane is ×10−2\times10^{- 2}. (Nearest integer)

  3. Question 3

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 2021 Paper 11 (same type asked 2 times) See all 2 of this type

    26
    How many equivalents of CH3MgBrCH_{3}MgBr to make 2-methylpropan-2-ol from ethyl ethanoate?

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  4. Question 4

    Coordination Compounds. Asked once: 2021 Paper 19 (same type asked 2 times) See all 2 of this type

    57
    The overall stability constant of the complex ion [Cu(NH3)4]2+\left\lbrack Cu\left( NH_{3} \right)_{4} \right\rbrack^{2 +} is 2.1×10132.1 \times10^{13}. The overall dissociation constant is y×10−14y \times10^{- 14}. Then yy is ____ . (Nearest integer)

  5. Question 5

    Hydrocarbons. Asked once: 2021 Paper 4 (same type asked 2 times) See all 2 of this type

    39
    The correct sequence of reagents used in the preparation of 4-bromo-2-nitroethyl benzene from benzene is:

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