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Chemistry · 2013 · Shift 0

26 questions from this JEE Main paper

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2013 · Shift 0
Chemistry

Chemistry · 2013 · Shift 0

26 questions from this JEE Main paper

Thermodynamics1 questions Ionic Equilibrium1 questions Compounds Containing Nitrogen3 questions Alcohols Phenols and Ethers2 questions Haloalkanes and Haloarenes2 questions Basics of Organic Chemistry1 questions Biomolecules1 questions Coordination Compounds1 questions D and F Block Elements2 questions Chemical Kinetics and Nuclear Chemistry1 questions Electrochemistry1 questions Some Basic Concepts of Chemistry3 questions Chemical Bonding and Molecular Structure3 questions Periodic Table and Periodicity2 questions Structure of Atom1 questions Redox Reactions1 questions

Q1.A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 37.0oC. As it does so, it absorbs 208J of heat. The values of q and w for the process will be : (R = 8.314 J/mol K) ( l n…
Chemistry · Thermodynamics · MCQ
Q2.How many litres of water must be added to 1 litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2?
Chemistry · Ionic Equilibrium · MCQ
Q3.A compound with molecular mass 180 is acylated with $C H_{3} C O C l$ to get a compound with molecular mass 390. The number of amino groups present per molecule of the former compound is:
Chemistry · Compounds Containing Nitrogen · MCQ
Q4.An organic compound A upon reacting with $N H_{3}$ gives $B .$ On heating $B$ gives $C . C$ in presence of $K O H$ reacts with $B r_{2}$ to given $C H_{3} C H_{2} N H_{2} 2. A$ is :
Chemistry · Compounds Containing Nitrogen · MCQ
Q5.Arrange the following compounds in order of decreasing acidity : Includes diagram
Chemistry · Alcohols Phenols and Ethers · MCQ
Q6.Compound $(A), C_{8} H_{9} B r,$ gives a white precipitate when warmed with alcoholic $A g N O_{3} .$ Oxidation of $(A)$ gives an acid $(B), C_{8} H_{6} O_{4} . (B)$ easily forms anhydride on…
Chemistry · Haloalkanes and Haloarenes · MCQ
Q7.The order of stability of the following carbocations : Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q8.Synthesis of each molecule of glucose in photosynthesis involves:
Chemistry · Biomolecules · MCQ
Q9.The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was:
Chemistry · Compounds Containing Nitrogen · MCQ
Q10.An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:
Chemistry · Alcohols Phenols and Ethers · MCQ
Q11.Which of the following complex species is not expected to exhibit optical isomerism?
Chemistry · Coordination Compounds · MCQ
Q12.Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest $E_{M^{3 +} / M^{2 +}}^{0}$ value?
Chemistry · D and F Block Elements · MCQ
Q13.Which of the following arrangements does not represent the correct order of the property stated against it?
Chemistry · D and F Block Elements · MCQ
Q14.The rate of a reaction doubles when its temperature changes from 300K to 310K. Activation energy of such a reaction will be:(R = 8.314 JK–1 mol–1 and log 2 = 0.301)
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q15.Given $E_{C r^{2 +} / C r}^{o}$ = -0.74 V; $E_{M n O_{4}^{-} / M n^{2 +}}^{o}$ = 1.51 V $E_{C r_{2} O_{7}^{2 -} / C r^{3 +}}^{o}$ = 1.33 V; $E_{C l / C l^{-}}^{o}$ = 1.36 V Based on the data given above, strongest oxidising agent will be :
Chemistry · Electrochemistry · MCQ
Q16.The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M) HCl will be:
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q17.A solution of (– $l$ ) – chloro –1 – phenylethane in toluene racemises slowly in the presence of a small amount of $S b C l_{5}$ , due to the formation of :
Chemistry · Haloalkanes and Haloarenes · MCQ
Q18.In which of the following pairs of molecules/ions, both the species are not likely to exist?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q19.Stability of the species $L i_{2}$ , $L i_{2}^{-}$ and $L i_{2}^{+}$ increases in the order of:
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q20.Which one of the following molecules is expected to exhibit diamagnetic behaviour?
Chemistry · Chemical Bonding and Molecular Structure · Multiple correct
Q21.The first ionization potential of $N a$ is 5.1 eV. The value of electron gain enthalpy of $N a^{+}$ will be:
Chemistry · Periodic Table and Periodicity · MCQ
Q22.Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar?
Chemistry · Periodic Table and Periodicity · MCQ
Q23.Energy of an electron is given by $E = - 2.178 \times 1 0^{- 18} J (\frac{Z ^{2}}{n ^{2}})$ . Wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be (h = 6.62 × 10−34 Js…
Chemistry · Structure of Atom · MCQ
Q24.Experimentally it was found that a metal oxide has formula $M 0.98 O$ . Metal $M$ , present as $M^{2 +}$ and $M^{3 +}$ in its oxide. Fraction of the metal which exists as $M^{3 +}$ would be
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q25.A gaseous hydrocarbon gives upon combustion 0.72 g of water and 3.08 g of $C O_{2}$ . The empirical formula of the hydrocarbon is
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q26.Consider the following reaction: $x M n O_{4}^{-} + y C_{2} O_{4}^{2 -}$ + z $H^{+}$ $\to$ x $M n^{2 +}$ + 2y $C O_{2}$ + $\frac{z}{2} H_{2} O$ The value's of x, y and z in the reaction are, respectively :
Chemistry · Redox Reactions · MCQ