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Chemistry · 2018 · Shift 0

26 questions from this JEE Main paper

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2018 · Shift 0
Chemistry

Chemistry · 2018 · Shift 0

26 questions from this JEE Main paper

Compounds Containing Nitrogen1 questions Ionic Equilibrium5 questions Biomolecules2 questions Alcohols Phenols and Ethers3 questions Hydrocarbons1 questions Haloalkanes and Haloarenes1 questions Practical Organic Chemistry1 questions P Block Elements1 questions Coordination Compounds2 questions Chemical Bonding and Molecular Structure3 questions Electrochemistry1 questions Chemical Kinetics and Nuclear Chemistry1 questions Solutions1 questions Thermodynamics2 questions Some Basic Concepts of Chemistry1 questions

Q1.The increasing order of basicity of the following compounds is : Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q2.An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination?
Chemistry · Ionic Equilibrium · MCQ
Q3.The predominant form of histamine present in human blood is (pKa, Histidine = 6.0)
Chemistry · Biomolecules · MCQ
Q4.Glucose on prolonged heating with HI gives
Chemistry · Biomolecules · MCQ
Q5.The major product formed in the following reaction is : Includes diagram
Chemistry · Alcohols Phenols and Ethers · MCQ
Q6.Phenol reacts with methyl chloroformate in the presence of $N a O H$ to form product A. A reacts with $B r_{2}$ to form product B. A and B are respectively :
Chemistry · Alcohols Phenols and Ethers · MCQ
Q7.Phenol on treatment with $C O_{2}$ in the presence of $N a O H$ followed by acidification produces compound X as the major product. X on treatment with $(C H_{3} C O)_{2} O$ in the presence of catalytic amount of $H_{2} S O_{4}$ produces:
Chemistry · Alcohols Phenols and Ethers · MCQ
Q8.The trans-alkenes are formed by the reduction of alkynes with
Chemistry · Hydrocarbons · MCQ
Q9.The major product of the following reaction is: Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q10.Which of the following compounds will be suitable for Kjeldahl’s method for nitrogen estimation?
Chemistry · Practical Organic Chemistry · MCQ
Q11.The compound that does not produce nitrogen gas by the thermal decomposition is :
Chemistry · P Block Elements · MCQ
Q12.The oxidation states of Cr in $[C r (H_{2} O)_{6}] C l_{3}$ , $[C r (C_{6} H_{6})_{2}]$ and $K_{2} [C r (C N)_{2} (O)_{2} (O_{2}) (N H_{3})]$ respectively are :
Chemistry · Coordination Compounds · MCQ
Q13.Consider the following reaction and statements: $[C o (N H_{3})_{4} B r_{2}]^{+}$ + $B r^{-}$ $\to$ $[C o (N H_{3})_{3} B r_{3}]$ + $N H_{3}$ (I) Two isomers are produced if the reactant complex ion is a cis-isomer (II) Two isomers are produced if the reactant complex…
Chemistry · Coordination Compounds · MCQ
Q14.Which of the following compounds contain(s) no covalent bond(s)? $K C l$ , $P H_{3}$ , $O_{2}$ , $B_{2} H_{6}$ , $H_{2} S O_{4}$
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q15.How long (approximate) should water be electrolysed by passing through 100 amperes current so that the oxygen released can completely burn 27.66 g of diborane? (Atomic weight of B = 10.8 u)
Chemistry · Electrochemistry · MCQ
Q16.At 518oC the rate of decomposition of a sample of gaseous acetaldehyde initially at a pressure of 363 Torr, was 1.00 Torr s–1 when 5% had reacted and 0.5 Torr s–1 when 33% had reacted. The order of the reaction is
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q17.Which of the following salts is the most basic in aqueous solution?
Chemistry · Ionic Equilibrium · MCQ
Q18.Which of the following are Lewis acids?
Chemistry · Ionic Equilibrium · MCQ
Q19.An aqueous solution contains 0.10 M $H_{2} S$ and 0.20 M $H C l$ . If the equilibrium constants for the formation of $H S^{-}$ from $H_{2} S$ is 1.0 $\times$ 10–7 and that of $S^{2 -}$ from $H S^{-}$ ions is 1.2 $\times$ 10–13 then the concentration of $S^{2 -}$ …
Chemistry · Ionic Equilibrium · MCQ
Q20.An aqueous solution contains an unknown concentration of $B a^{2 +}$ . When 50 mL of a 1 M solution of $N a_{2} S O_{4}$ is added, $B a S O_{4}$ just begins to precipitate. The final volume is 500 mL. The solubility product of $B a S O_{4}$ is 1 $\times$ …
Chemistry · Ionic Equilibrium · MCQ
Q21.For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point?
Chemistry · Solutions · MCQ
Q22.Which of the following lines correctly show the temperature dependence of equilibrium constant K, for an exothermic reaction? Includes diagram
Chemistry · Thermodynamics · MCQ
Q23.The combustion of benzene(l) gives $C O_{2}$ (g) and $H_{2} O$ (l). Given that heat of combustion of benzene at constant volume is –3263.9 kJ mol–1 at 25oC; heat of combustion (in kJ mol–1) of benzene at constant pressure will be : (R = 8.314 JK–1…
Chemistry · Thermodynamics · MCQ
Q24.Total number of lone pair of electrons in $I_{3}^{-}$ ion is
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q25.According to molecular orbital theory, which of the following will not be a viable molecule?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q26.The ratio of mass percent of C and H of an organic compound ( $C_{X} H_{Y} O_{Z}$ ) is 6 : 1. If one molecule of the above compound ( $C_{X} H_{Y} O_{Z}$ ) contains half as much oxygen as required to burn one molecule of compound $C_{X} H_{Y}$ completely to $C O_{2}$ …
Chemistry · Some Basic Concepts of Chemistry · MCQ