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Day 329: JEE Mains Chemistry

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

  1. Question 1

    Structure of Atom. Asked once: 2021 Paper 25 (same type asked 6 times) See all 6 of this type

    34
    The orbital having two radial as well as two angular nodes is

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  2. Question 2

    Some Basic Concepts of Chemistry. Asked once: 11 Apr 2023 (same type asked 6 times) See all 6 of this type

    149
    The volume of hydrogen liberated at STP by treating 2.4 g2.4\text{ }g of magnesium with excess of hydrochloric acid is___ ×10−2 L\times10^{- 2}\text{ }L. Given: Molar volume of gas is 22.4 L22.4\text{ }L at STP. Molar mass of magnesium is 24 g mol−124\text{ }g{\text{ }mol}^{- 1}.

  3. Question 3

    The p-Block Elements. Asked once: 8 Apr 2024 (same type asked 6 times) See all 6 of this type

    129
    Identify the incorrect statements about group 15 elements : (A) Dinitrogen is a diatomic gas which acts like an inert gas at room temperature. (B) The common oxidation states of these elements are −3,+3- 3, + 3 and +5 . (C) Nitrogen has unique ability to form pπ−pπp\pi-p\pi multiple bonds. (D) The stability of +5 oxidation states increases down the group. (E) Nitrogen shows a maximum covalency of 6 . Choose the correct answer from the options given below.

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  4. Question 4

    Hydrocarbons. Asked once: 31 Jan 2023 (same type asked 6 times) See all 6 of this type

    124
    A hydrocarbon ' XX ' with formula C6H8C_{6}H_{8} uses two moles H2H_{2} on catalytic hydrogenation of its one mole. On ozonolysis, ' XX ' yields two moles of methane dicarbaldehyde. The hydrocarbon ' XX ' is:

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  5. Question 5

    Chemical Bonding and Molecular Structure. Asked once: 25 Jun 2022 (same type asked 6 times) See all 6 of this type

    31
    Bonding in which of the following diatomic molecule(s) become(s) stronger, on the basis of MO Theory, by removal of an electron? (A) NO (B) N2N_{2} (C) O2O_{2} (D) C2C_{2} (E) B2B_{2} Choose the most appropriate answer from the options given below: -

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