PYQ Vault
EbooksTutor

Day 208: JEE Mains Chemistry

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

  1. Question 1

    Coordination Compounds. Asked once: 7 Apr 2025 (same type asked 19 times) See all 19 of this type

    114
    The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively :
    [Fe(CN)6]3−,[FeF6]3−,[CoF6]3−,[Mn(CN)6]3−\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -},\left\lbrack FeF_{6} \right\rbrack^{3 -},\left\lbrack CoF_{6} \right\rbrack^{3 -},\left\lbrack Mn(CN)_{6} \right\rbrack^{3 -}

    Tap an option to check your answer.

  2. Question 2

    Chemical Bonding and Molecular Structure. Asked once: 7 Apr 2025 (same type asked 15 times) See all 15 of this type

    113
    In SO2,NO2−SO_{2},NO_{2}^{-}and N3−N_{3}^{-}the hybridizations at the central atom are respectively :

    Tap an option to check your answer.

  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 4 Apr 2025 (same type asked 15 times) See all 15 of this type

    108
    The IUPAC name of the following compound is --

    Tap an option to check your answer.

  4. Question 4

    Some Basic Concepts of Chemistry. Asked once: 7 Apr 2025 (same type asked 14 times) See all 14 of this type

    123
    Butane reacts with oxygen to produce carbon dioxide and water following the equation given below
    C4H10( g)+132O2( g)→4CO2( g)+5H2O(l)C_{4}H_{10}(\text{ }g) + \frac{13}{2}O_{2}(\text{ }g) \rightarrow 4{CO}_{2}(\text{ }g) + 5H_{2}O(l)
    If 174.0 kg of butane is mixed with 320.0 kg of O2O_{2}, the volume of water formed in litres is .(Nearest integer) [Given : (a) Molar mass of C,H,OC,H,O are 12,1 , 16 g mol−116\text{ }g{\text{ }mol}^{- 1} respectively, (b) Density of water =1 g mL−1= 1\text{ }g{\text{ }mL}^{- 1} ]

  5. Question 5

    Chemical Bonding and Molecular Structure. Asked once: 28 Jan 2025 (same type asked 13 times) See all 13 of this type

    35
    The molecules having square pyramidal geometry are

    Tap an option to check your answer.