New chat PYQ Library Doubts Rank report

Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →

Chemistry · 2005 · Shift 0

59 questions from this JEE Main paper

Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.

PYQ Library
JEE Main
Papers
2005 · Shift 0
Chemistry

Chemistry · 2005 · Shift 0

59 questions from this JEE Main paper

Chemical Equilibrium3 questions Thermodynamics3 questions Solutions3 questions Ionic Equilibrium3 questions Chemical Bonding and Molecular Structure2 questions Basics of Organic Chemistry3 questions Hydrocarbons4 questions Alcohols Phenols and Ethers2 questions Compounds Containing Nitrogen3 questions Biomolecules1 questions Aldehydes Ketones and Carboxylic Acids3 questions Chemical Kinetics and Nuclear Chemistry5 questions D and F Block Elements5 questions Structure of Atom3 questions Electrochemistry4 questions Coordination Compounds5 questions Haloalkanes and Haloarenes3 questions Some Basic Concepts of Chemistry2 questions Periodic Table and Periodicity2 questions

Q1.An amount of solid $N H_{4} H S$ is placed in a flask already containing ammonia gas at a certain temperature and 0.50 atm. Pressure. Ammonium hydrogen sulphide decomposes to yield $N H_{3}$ and $H_{2} S$ gases in the flask. When the decomposition…
Chemistry · Chemical Equilibrium · MCQ
Q2.Consider the reaction: $N_{2}$ + 3 $H_{2}$ $\to$ 2 $N H_{3}$ carried out at constant temperature and pressure. If $Δ H$ and $Δ U$ are the enthalpy and internal energy changes for the reaction, which of the following expressions is true?
Chemistry · Thermodynamics · MCQ
Q3.If the bond dissociation energies of $X Y$ , $X_{2}$ and $Y_{2}$ (all diatomic molecules) are in the ratio of 1:1:0.5 and $Δ H_{f}$ for the formation of $X Y$ is -200 kJ mole-1. The bond dissociation energy of $X_{2}$ will be :
Chemistry · Thermodynamics · MCQ
Q4.Consider an endothermic reaction, X $\to$ Y with the activation energies Eb and Ef for the backward and forward reactions, respectively. In general :
Chemistry · Thermodynamics · MCQ
Q5.If $α$ is the degree of dissociation of $N a_{2} S O_{4}$ , the vant Hoff’s factor (i) used for calculating the molecular mass is :
Chemistry · Solutions · MCQ
Q6.The solubility product of a salt having general formula $M X_{2}$ , in water is: 4 $\times$ 10-12 . The concentration of $M^{2 +}$ ions in the aqueous solution of the salt is :
Chemistry · Ionic Equilibrium · MCQ
Q7.The exothermic formation of $C l F_{3}$ is represented by the equation: $C l_{2}$ (g) + 3 $F_{2}$ (g) $⇋$ 2 $C l F_{3}$ (g); $Δ H$ = -329 kJ Which of the following will increase the quantity of $C l F_{3}$ in an equilibrium mixture of…
Chemistry · Chemical Equilibrium · MCQ
Q8.For the reaction 2 $N O_{2}$ (g) $⇋$ 2 $N O$ (g) + $O_{2}$ (g), (Kc = 1.8 $\times$ 10-6 at 184oC) (R = 0.0831 kJ/(mol. K)) When Kp and Kc are compared at 184oC , it is found that :
Chemistry · Chemical Equilibrium · MCQ
Q9.What is the conjugate base of $O H^{-}$ ?
Chemistry · Ionic Equilibrium · MCQ
Q10.Hydrogen ion concentration in mol / L in a solution of pH = 5.4 will be :
Chemistry · Ionic Equilibrium · MCQ
Q11.Which one of the following species is diamagnetic in nature?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q12.Due to the presence of an unpaired electron, free radicals are:
Chemistry · Basics of Organic Chemistry · MCQ
Q13.Reaction of one molecule of HBr with one molecule of 1,3-butadiene at 40oC gives predominantly
Chemistry · Hydrocarbons · MCQ
Q14.Of the five isomeric hexanes, the isomer which can give two monochlorinated compounds is
Chemistry · Hydrocarbons · MCQ
Q15.2 methylbutane on reacting with bromine in the presence of sunlight gives mainly
Chemistry · Hydrocarbons · MCQ
Q16.Acid catalyzed hydration of alkenes except ethene leads to the formation of
Chemistry · Alcohols Phenols and Ethers · MCQ
Q17.Which types of isomerism is shown by 2,3-dichlorobutane?
Chemistry · Hydrocarbons · MCQ
Q18.Benzene and toluene form nearly ideal solutions. At 20 oC, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20 oC for a solution containing 78 g of benzene and 46 g of…
Chemistry · Solutions · MCQ
Q19.Equimolar solutions in the same solvent have
Chemistry · Solutions · MCQ
Q20.Amongst the following the most basic compound is
Chemistry · Compounds Containing Nitrogen · MCQ
Q21.Which one of the following methods is neither meant for the synthesis nor for separation of amines?
Chemistry · Compounds Containing Nitrogen · MCQ
Q22.An organic compound having molecular mass 60 is found to contain C = 20%, H = 6.67% and N = 46.67% while rest is oxygen. On heating it gives $N H_{3}$ along with a solid residue. The solid residue give violet colour with alkaline copper…
Chemistry · Compounds Containing Nitrogen · MCQ
Q23.In both DNA and RNA, heterocyclic base and phosphate ester linkages are at-
Chemistry · Biomolecules · MCQ
Q24.Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of an acid forms a compound if water during the reaction is continuously removed. The compound formed is generally known as
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q25.The decreasing order of nucleophilicity among the nucleophiles Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q26.The reaction is fastest when $X$ is Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q27.A schematic plot of $l n K_{e q}$ versus inverse of temperature for a reaction is shown below The reaction must be Includes diagram
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q28. $p$ -cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound $B .$ The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is :
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q29.The oxidation state of chromium in the final product formed the reaction between $K I$ and acidified potassium dichromate solution is :
Chemistry · D and F Block Elements · MCQ
Q30.On heating mixture of $C u_{2} O$ and $C u_{2} S$ will give :
Chemistry · D and F Block Elements · MCQ
Q31.Calomel $(H g_{2} C l_{2})$ on reaction with ammonium hydroxide gives :
Chemistry · D and F Block Elements · MCQ
Q32.Pick out the isoelectronic structure from the following : $(i) C H_{3}^{+} (ii) H_{3} O^{+} (iii) N H_{3} (i v) C H_{3}^{-}$ …
Chemistry · Structure of Atom · MCQ
Q33.For a spontaneous reaction the ∆G , equilibrium constant (K) and $E_{ce l l}^{o}$ will be respectively
Chemistry · Electrochemistry · MCQ
Q34.Aluminium oxide may be electrolysed at 1000oC to furnish aluminium metal (Atomic mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is $A l^{3 +}$ + 3 $e^{-}$ $\to$ Alo To prepare 5.12 kg of aluminium metal by this method would…
Chemistry · Electrochemistry · MCQ
Q35.The highest electrical conductivity of the following aqueous solutions is of :
Chemistry · Electrochemistry · MCQ
Q36.Calculate $\land_{H O A c}^{\infty}$ Using appropriate molar conductances of the electrolytes listed above at infinite dilution in H2O at 25oC Includes table
Chemistry · Electrochemistry · MCQ
Q37.Hydrogen bomb is based on the principle of
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q38.A reaction involving two different reactants can never be
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q39.The photon of hard gamma radiation knocks a proton out of $_{12}^{24} M g$ nucleus to form
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q40.t1/4 can be taken as the time taken for the concentration of a reactant to drop to $\frac{3}{4}$ of its initial value. If the rate constant for a first order reaction is K, the t1/4 can be written as
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q41.The lanthanide contraction is responsible for the fact that :
Chemistry · D and F Block Elements · MCQ
Q42.Which of the following factors may be regarded as the main cause of lanthanide contraction?
Chemistry · D and F Block Elements · MCQ
Q43.The IUPAC name of the coordination compound $K_{3} [F e (C N)_{6}]$ is
Chemistry · Coordination Compounds · MCQ
Q44.The oxidation state of Cr in $[C r (N H_{3})_{4} C l_{2}]^{+}$ is :
Chemistry · Coordination Compounds · MCQ
Q45.Which of the following compounds shows optical isomerism?
Chemistry · Coordination Compounds · MCQ
Q46.The value of the ‘spin only’ magnetic moment for one of the following configurations is 2.84 BM. The correct one is :
Chemistry · Coordination Compounds · MCQ
Q47.Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour? (At. No. Cr = 24, Mn = 25, Fe = 26, Co = 27)
Chemistry · Coordination Compounds · MCQ
Q48.Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of
Chemistry · Haloalkanes and Haloarenes · MCQ
Q49.Elimination of bromine from 2-bromobutane results in the formation of-
Chemistry · Haloalkanes and Haloarenes · MCQ
Q50.Alkyl halides react with dialkyl copper reagents to give
Chemistry · Haloalkanes and Haloarenes · MCQ
Q51.The best reagent to convert pent -3- en-2-ol into pent -3-en-2-one is
Chemistry · Alcohols Phenols and Ethers · MCQ
Q52.Among the following acids which has the lowest pKa value?
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q53.Two solutions of a substance (non electrolyte) are mixed in the following manner. 480 ml of 1.5 M first solution + 520 ml of 1.2 M second solution. What is the molarity of the final mixture?
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q54.If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of the substance will
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q55.Of the following sets which one does NOT contain isoelectronic species?
Chemistry · Structure of Atom · MCQ
Q56.In a multi-electron atom, which of the following orbitals described by the three quantum members will have the same energy in the absence of magnetic and electric fields? (A) n = 1, l = 0, m = 0 (B) n = 2, l = 0, m = 0 (C) n = 2, l = 1, m…
Chemistry · Structure of Atom · MCQ
Q57.Which of the following oxides is amphoteric in character?
Chemistry · Periodic Table and Periodicity · MCQ
Q58.In which of the following arrangements the order is NOT according to the property indicated against it?
Chemistry · Periodic Table and Periodicity · MCQ
Q59.Lattice energy of an ionic compounds depends upon
Chemistry · Chemical Bonding and Molecular Structure · MCQ