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Day 381: JEE Mains Chemistry

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

  1. Question 1

    Some Basic Concepts of Chemistry. Asked once: 26 Jun 2022 (same type asked 14 times) See all 14 of this type

    141
    CNGCNG is an important transportation fuel. When 100 g CNG is mixed with 208 g oxygen in vehicles, it leads to the formation of CO2CO_{2} and H2OH_{2}O and produces large quantity of heat during this combustion, then the amount of carbon dioxide, produced in grams is [nearest integer] [Assume CNG to be methane]

  2. Question 2

    Chemical Bonding and Molecular Structure. Asked once: 27 Jun 2022 (same type asked 13 times) See all 13 of this type

    32
    Based upon VSEPR theory, match the shape (geometry) of the molecules in List-I with the molecules in List-II and select the most appropriate option List-I LIST-II Shape Molecules (A) T-shaped (I) XeF4XeF_{4} (B) Trigonal planar (II) SF4SF_{4} (C) Square planar (III) ClF3ClF_{3} (D) See-saw (IV) BF3BF_{3}

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  3. Question 3

    Coordination Compounds. Asked once: 2021 Paper 17 (same type asked 12 times) See all 12 of this type

    38
    Given below are two statements: Statement I : [Mn(CN)6]3−,[Fe(CN)6]3−\left\lbrack Mn(CN)_{6} \right\rbrack^{3 -},\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -} and [Co(C2O4)3]3−\left\lbrack Co\left( C_{2}O_{4} \right)_{3} \right\rbrack^{3 -} are d2sp3d^{2}sp^{3} hybridised. Statement II: [MnCl6]3−\left\lbrack MnCl_{6} \right\rbrack^{3 -} and [FeF6]3−\left\lbrack FeF_{6} \right\rbrack^{3 -} are paramagnetic and have 4 and 5 unpaired electrons, respectively. In the light of the above statements, choose the correct answer from the options given below:

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  4. Question 4

    Hydrocarbons. Asked once: 2021 Paper 5 (same type asked 11 times) See all 11 of this type

    36
    Among the following, the aromatic compounds are: (A) (B) (C) (D) Choose the correct answer from the following options:

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  5. Question 5

    Some Basic Concepts of Chemistry. Asked once: 25 Jun 2022 (same type asked 11 times) See all 11 of this type

    150
    The neutralization occurs when 10 mL10\text{ }mL of 0.1M0.1M acid ' AA ' is allowed to react with 30 mL30\text{ }mL of 0.05M0.05M base M(OH)2M(OH)_{2}. The basicity of the acid 'A' is [ MM is a metal]