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Chemistry · 2007 · Shift 0

38 questions from this JEE Main paper

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2007 · Shift 0
Chemistry

Chemistry · 2007 · Shift 0

38 questions from this JEE Main paper

Aldehydes Ketones and Carboxylic Acids1 questions Basics of Organic Chemistry4 questions Ionic Equilibrium3 questions Thermodynamics3 questions Hydrocarbons2 questions D and F Block Elements2 questions P Block Elements2 questions Biomolecules1 questions Compounds Containing Nitrogen2 questions Alcohols Phenols and Ethers1 questions Haloalkanes and Haloarenes1 questions Coordination Compounds1 questions Chemical Kinetics and Nuclear Chemistry4 questions Electrochemistry2 questions Solutions2 questions Chemical Bonding and Molecular Structure4 questions Structure of Atom1 questions Some Basic Concepts of Chemistry2 questions

Q1.The compound formed as a result of oxidation of ethyl benzene by $K M n O_{4}$ is :
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q2.Which one of the following conformation of cyclohexane is chiral?
Chemistry · Basics of Organic Chemistry · MCQ
Q3.Presence of a nitro group in a benzene ring
Chemistry · Basics of Organic Chemistry · MCQ
Q4.The pKa of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid is ionized is :
Chemistry · Ionic Equilibrium · MCQ
Q5.In a sautrated solution of the sparingly soluble strong electrolyte $A g I O_{3}$ (Molecular mass = 283) the equilibrium which sets in is $A g I O_{3}$ (s) $⇋$ $A g^{+}$ (aq) + $I O_{3}^{-}$ If the solubility product constant Ksp of $A g I O_{3}$ …
Chemistry · Ionic Equilibrium · MCQ
Q6.The first and second dissociation constants of an acid $H_{2} A$ are 1.0 $\times$ 10−5 and 5.0 $\times$ 10−10 respectively. The overall dissociation constant of the acid will be :
Chemistry · Ionic Equilibrium · MCQ
Q7.Identify the correct statement regarding a spontaneous process :
Chemistry · Thermodynamics · MCQ
Q8.In conversion of lime-stone to lime, $C a C O_{3}$ (s) $\to$ $C a O$ (s) + $C O_{2}$ (g) the vales of ∆H° and ∆S° are +179.1 kJ mol−1 and 160.2 J/K respectively at 298 K and 1 bar. Assuming that ∆H° do not change with temperature, temperature above…
Chemistry · Thermodynamics · MCQ
Q9.Which of the following reactions will yield 2, 2-dibromopropane?
Chemistry · Hydrocarbons · MCQ
Q10.The actinoids exhibits more number of oxidation states in general than the lanthanoids. This is because :
Chemistry · D and F Block Elements · MCQ
Q11.The stability of dihalides of $S i, G e, S n$ and $P b$ increases steadily in the sequence :
Chemistry · P Block Elements · MCQ
Q12.Which of the following molecules is expected to rotate the plane of plane - polarized light?
Chemistry · Basics of Organic Chemistry · MCQ
Q13. Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q14.Assuming that water vapour is an ideal gas, the internal energy change $(Δ U)$ when $1$ mol of water is vapourised at $1$ bar pressure and $10 0^{\circ} C$ (Given : molar enthalpy of vapourisation of water at $1$ bar…
Chemistry · Thermodynamics · MCQ
Q15.The secondary structure of a protein refers to
Chemistry · Biomolecules · MCQ
Q16.In the chemical reaction, $C H_{3} C H_{2} N H_{2}$ + $C H C l_{3}$ + 3 $K O H$ $\to$ (A) + (B) + 3 $H_{2} O$ , the compound (A) and (B) are respectively
Chemistry · Compounds Containing Nitrogen · MCQ
Q17.Which one of the following is the strongest base in aqueous solution?
Chemistry · Compounds Containing Nitrogen · MCQ
Q18.In the following sequence of reactions, $C H_{3} C H_{2} O H$ $P + I_{2}$ A $e t h er ⟶ M g$ B $H C H O$ C $H_{2} O$ D the compound ‘D’ is
Chemistry · Alcohols Phenols and Ethers · MCQ
Q19.Which of the following is the correct order of decreasing SN2 reactivity?
Chemistry · Haloalkanes and Haloarenes · MCQ
Q20.Which one of the following has a square planar geometry?
Chemistry · Coordination Compounds · MCQ
Q21.Identify the incorrect statement among the following :
Chemistry · D and F Block Elements · MCQ
Q22.Regular use of which of the following fertilizer increases the acidity of soil?
Chemistry · P Block Elements · MCQ
Q23.Which of the following nuclear reactions will generate an isotope?
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q24.A radioactive element gets spilled over the floor of a room. Its half-life period is 30 days. If the initial activity is ten times the permissible value, after how many days will it be safe to enter the room?
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q25.Consider the reaction, 2A + B $\to$ products. When concentration of B alone was doubled, the half-life did not change. When the concentration of A alone was doubled, the rate increased by two times. The unit of rate constant for this…
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q26.The energies of activation for forward and reverse reactions for $A_{2}$ + $B_{2}$ $⇋$ 2 $A B$ are 180 kJ mol−1 and 200 kJ mol−1 respectively. The presence of catalyst lowers the activation energy of both (forward and reverse)…
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q27.The cell, $Z n$ | $Z n^{2 +}$ (1M) || $C u^{2 +}$ (1M) | $C u$ ( $E_{ce l l}^{o}$ = 1.10V) was allowed to be completely discharged at 298 K. The relative concentration of $Z n^{2 +}$ to $C u^{2 +}$ $[\frac{[ Z n ^{2 +} ]}{[ C u ^{2 +} ]}]$ …
Chemistry · Electrochemistry · MCQ
Q28.The equivalent conductances of two strong electrolytes at infinite dilution in $H_{2} O$ (where ions move freely through a solution) at 25oC are given below: $\land_{C H_{3} C O O N a}^{o}$ = 91.0 S cm2/equiv $\land_{H C l}^{o}$ = 426.2 S cm2/equiv…
Chemistry · Electrochemistry · MCQ
Q29.A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm at 300 K. The vapour pressure of propyl alcohol is 200 mm. If the mole fraction of ethyl alcohol is 0.6, its vapour pressure (in mm) at the same temperature will…
Chemistry · Solutions · MCQ
Q30.A 5.25 % solution of a substance is isotonic with a 1.5% solution of urea (molar mass = 60 g mol−1) in the same solvent. If the densities of both the solutions are assumed to be equal to 1.0 g cm−3, molar mass of the substance will be
Chemistry · Solutions · MCQ
Q31.The reaction of toluene with $C l_{2}$ in presence of $F e C l_{3}$ gives predominantly
Chemistry · Hydrocarbons · MCQ
Q32.Which of the following hydrogen bonds is the strongest?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q33.In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q34.The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizinig order of the polarizing power of the cationic species, $K^{+}$ , $C a^{2 +}$ , $M g^{2 +}$ , $B e^{2 +}$ …
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q35.Which of the following species exhibits the diamagnetic behaviour?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q36.Which of the following sets of quantum numbers represents the highest energy of an atom?
Chemistry · Structure of Atom · MCQ
Q37.The density (in g mL-1) of a 3.60 M sulphuric acid solution that is 29% $H_{2} S O_{4}$ (molar mass = 98 g mol-1) by mass will be
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q38.In the reaction 2 $A l$ (s) + 6 $H C l$ (aq) $\to$ 2 $A l^{3 +}$ (aq) + 6 $C l^{-}$ (aq) + 3 $H_{2}$ (g)
Chemistry · Some Basic Concepts of Chemistry · MCQ