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Chemistry · 2012 · Shift 0

22 questions from this JEE Main paper

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2012 · Shift 0
Chemistry

Chemistry · 2012 · Shift 0

22 questions from this JEE Main paper

Solutions1 questions Some Basic Concepts of Chemistry1 questions Hydrocarbons2 questions Chemical Equilibrium1 questions Ionic Equilibrium1 questions Thermodynamics1 questions Electrochemistry1 questions Biomolecules2 questions Aldehydes Ketones and Carboxylic Acids1 questions Haloalkanes and Haloarenes3 questions Coordination Compounds1 questions D and F Block Elements1 questions P Block Elements1 questions Chemical Kinetics and Nuclear Chemistry1 questions Chemical Bonding and Molecular Structure1 questions Alcohols Phenols and Ethers1 questions Periodic Table and Periodicity1 questions Structure of Atom1 questions

Q1.Kf for water is 1.86K kg mol–1. If your automobile radiator holds 1.0 kg of water, how many grams of ethylene glycol ( $C_{2} H_{6} O_{2}$ ) must you add to get the freezing point of the solution lowered to –2.8oC ?
Chemistry · Solutions · MCQ
Q2.The density of a solution prepared by dissolving 120 g of urea (mol. Mass = 60 u ) in 1000g of water is 1.15 g/mL. The molarity of this solution is :
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q3.2–Hexyne gives trans–2–Hexene on treatment with :
Chemistry · Hydrocarbons · MCQ
Q4.Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide ?
Chemistry · Hydrocarbons · MCQ
Q5.The equilibrium constant (KC) for the reaction $N_{2}$ (g) + $O_{2}$ (g) $\to$ 2 $N O$ (g) at temperature T is 4 $\times$ 10–4. The value of KC for the reaction, $N O$ (g) $\to$ 1/2 $N_{2}$ (g) + 1/2 $O_{2}$ (g) at the same temperature is :
Chemistry · Chemical Equilibrium · MCQ
Q6.The pH of a 0.1 molar solution of the acid HQ is 3. The value of the ionization constant, Ka of this acid is :
Chemistry · Ionic Equilibrium · MCQ
Q7.The incorrect expression among the following is :
Chemistry · Thermodynamics · MCQ
Q8.The standard reduction potentials for $Z n^{2 +}$ / $Z n$ , $N i^{2 +}$ / $N i$ , and $F e^{2 +}$ / $F e$ are –0.76, –0.23 and –0.44 V respectively. The reaction X + $Y^{2 +}$ $\to$ $X^{2 +}$ + Y will be spontaneous when :
Chemistry · Electrochemistry · MCQ
Q9.Which one of the following statements is correct ?
Chemistry · Biomolecules · MCQ
Q10.In the given transformation, which of the following is the most appropriate reagent ? Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q11.Which of the following compounds can be detected by Molisch’s test ?
Chemistry · Biomolecules · MCQ
Q12.Iodoform can be prepared from all except :
Chemistry · Haloalkanes and Haloarenes · MCQ
Q13.What is DDT among the following?
Chemistry · Haloalkanes and Haloarenes · MCQ
Q14.How many chiral compounds are possible on monochlorination of 2–methyl butane ?
Chemistry · Haloalkanes and Haloarenes · MCQ
Q15.Which among the following will be named as dibromidobis (ethylene diamine) chromium(III) bromide?
Chemistry · Coordination Compounds · MCQ
Q16.Iron exhibits + 2 and +3 oxidation states. Which of the following statements about iron is incorrect?
Chemistry · D and F Block Elements · MCQ
Q17.The molecule having smallest bond angle is :
Chemistry · P Block Elements · MCQ
Q18.For a first order reaction, (A) $\to$ products, the concentration of A changes from 0.1 M to 0.025 M in 40 minutes. The rate of reaction when the concentration of A is 0.01 M is :
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q19.In which of the following pairs the two species are not isostructural ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q20.Ortho–Nitrophenol is less soluble in water than p– and m– Nitrophenols because :
Chemistry · Alcohols Phenols and Ethers · MCQ
Q21.The increasing order of the ionic radii of the given isoelectronic species is :
Chemistry · Periodic Table and Periodicity · MCQ
Q22.The electrons identified by quantum numbers n and l : (a) n = 4, $l$ = 1 (b) n = 4, $l$ = 0 (c) n = 3, $l$ = 2 (d) n = 3, $l$ = 1 Can be placed in order of increasing energy as :
Chemistry · Structure of Atom · MCQ