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Chemistry · 2021 · 20 Jul · Shift 1

21 questions from this JEE Main paper
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Chemistry · 2021 · 20 Jul · Shift 1

21 questions from this JEE Main paper

Coordination Compounds3 questionsCompounds Containing Nitrogen3 questionsP Block Elements1 questionsPractical Organic Chemistry1 questionsBasics of Organic Chemistry1 questionsAlcohols Phenols and Ethers2 questionsBiomolecules1 questionsAldehydes Ketones and Carboxylic Acids1 questionsHydrocarbons1 questionsChemical Bonding and Molecular Structure1 questionsSome Basic Concepts of Chemistry2 questionsStructure of Atom1 questionsChemical Equilibrium1 questionsChemical Kinetics and Nuclear Chemistry1 questionsSolutions1 questions
  1. Q1.According to the valence bond theory the hybridization of central metal atom is dsp2 for which one of the following compounds?
    Chemistry · Coordination Compounds · MCQ
  2. Q2.The correct structure of Rhumann's Purple, the compound formed in the reaction of ninhydrin with proteins is :
    Chemistry · Compounds Containing Nitrogen · MCQ
  3. Q3.The correct order of intensity of colors of the compounds is :
    Chemistry · Coordination Compounds · MCQ
  4. Q4.The species given below that does NOT show disproportionation reaction is :
    Chemistry · P Block Elements · MCQ
  5. Q5.An inorganic Compound 'X' on treatment with concentrated H2​SO4​ produces brown fumes and gives dark brown ring with FeSO4​ in presence of concentrated H2​SO4​. Also Compound 'X' gives precipitate 'Y', when its solution in dilute HCl…
    Chemistry · Practical Organic Chemistry · MCQ
  6. Q6.Among the given species the Resonance stabilised carbocations are : Includes diagram
    Chemistry · Basics of Organic Chemistry · MCQ
  7. Q7.In the given reaction 3-Bromo-2, 2-dimethyl butane C2​H5​OH​(MajorProduct)′A′​ Product A is :
    Chemistry · Alcohols Phenols and Ethers · MCQ
  8. Q8.Compound A is converted to B on reaction with CHCl3​ and KOH. The compound B is toxic and can be decomposed by C. A, B and C respectively are :
    Chemistry · Compounds Containing Nitrogen · MCQ
  9. Q9.Identify the incorrect statement from the following
    Chemistry · Biomolecules · MCQ
  10. Q10.Which among the above compound/s does/do not form Silver mirror when treated with Tollen's reagent? Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  11. Q11.For above chemical reactions, identify the correct statement from the following : Includes diagram
    Chemistry · Hydrocarbons · MCQ
  12. Q12.The number of lone pairs of electrons on the central I atom in I 3−​ is ​.
    Chemistry · Chemical Bonding and Molecular Structure · Numerical
  13. Q13.250 mL of 0.5 M NaOH was added to 500 mL of 1 M HCl. The number of unreacted HCl molecules in the solution after complete reaction is ​× 1021. (Nearest integer) (NA = 6.022 × 1023)
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  14. Q14.The Azimuthal quantum number for the valence electrons of Ga+ ion is ​. (Atomic number of Ga = 31)
    Chemistry · Structure of Atom · Numerical
  15. Q15.The spin-only magnetic moment value for the complex [Co(CN)6​]4− is ​ BM. [At. no. of Co = 27]
    Chemistry · Coordination Compounds · Numerical
  16. Q16.2SO2​(g) + O2​(g) ⇌ 2SO3​(g) In an equilibrium mixture, the partial pressures are PSO3​ = 43 kPa; PO2​ = 530 Pa and PSO2​ = 45 kPa. The equilibrium constant KP = ​× 10 −…
    Chemistry · Chemical Equilibrium · Numerical
  17. Q17.The number of nitrogen atoms in a semicarbazone molecule of acetone is ​.
    Chemistry · Compounds Containing Nitrogen · Numerical
  18. Q18.To synthesize 1.0 mole of 2-methylpropan-2-ol from Ethylethanoate ​ equivalents of CH3​MgBr Reagent will be required. (Integer value)
    Chemistry · Alcohols Phenols and Ethers · Numerical
  19. Q19.The inactivation rate of a viral preparation is proportional to the amount of virus. In the first minute after preparation, 10% of the virus is inactivated. The rate constant for viral inactivation is ​× 10…
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  20. Q20.An average person needs about 10000 kJ energy per day. The amount of glucose (molar mass = 180.0 g mol − 1) needed to meet this energy requirement is ​ g. (Use : Δ CH(glucose) = − 2700 kJ mol − 1)
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  21. Q21.At 20 ∘ C, the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in the vapour phase at 20 ∘ above an equimolar mixture of benzene and methyl benzene is ​…
    Chemistry · Solutions · Numerical