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Chemistry · 2004 · Shift 0

66 questions from this JEE Main paper

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2004 · Shift 0
Chemistry

Chemistry · 2004 · Shift 0

66 questions from this JEE Main paper

Thermodynamics2 questions Ionic Equilibrium2 questions Chemical Equilibrium3 questions Hydrocarbons1 questions Basics of Organic Chemistry8 questions Coordination Compounds6 questions Haloalkanes and Haloarenes1 questions Aldehydes Ketones and Carboxylic Acids3 questions Alcohols Phenols and Ethers2 questions Biomolecules3 questions Practical Organic Chemistry1 questions D and F Block Elements3 questions Chemical Kinetics and Nuclear Chemistry4 questions Solutions4 questions Electrochemistry6 questions P Block Elements2 questions Some Basic Concepts of Chemistry3 questions Structure of Atom4 questions Periodic Table and Periodicity3 questions Chemical Bonding and Molecular Structure5 questions

Q1.An ideal gas expands in volume from 1 $\times$ 10-3 m3 to 1 $\times$ 10-2 m3 at 300 K against a constant pressure of 1 $\times$ 105 Nm-2. The work done is :
Chemistry · Thermodynamics · MCQ
Q2.The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 kJ mol-1 respectively. The enthalpy of formation of carbon monoxide per mole is :
Chemistry · Thermodynamics · MCQ
Q3.The conjugate base of $H_{2} P O_{4}^{-}$ is :
Chemistry · Ionic Equilibrium · MCQ
Q4.What is the equilibrium expression for the reaction $P_{4}$ (s) + 5 $O_{2}$ $⇋$ $P_{4} O_{10}$ (s)?
Chemistry · Chemical Equilibrium · MCQ
Q5.For the reaction, $C O$ (g) + $C l_{2}$ (g) $⇋$ $C O C l_{2}$ (g) the $\frac{K _{p}}{K _{c}}$ is equal to :
Chemistry · Chemical Equilibrium · MCQ
Q6.The equilibrium constant for the reaction $N_{2}$ (g) + $O_{2}$ (g) $⇋$ 2 $N O$ (g) at temperature T is 4 $\times$ 10-4. The value of Kc for the reaction $N O$ (g) $⇋$ $\frac{1}{2}$ $N_{2}$ (g) + $\frac{1}{2}$ $O_{2}$ …
Chemistry · Chemical Equilibrium · MCQ
Q7.The molar solubility (in ol L-1) of a sparingly soluble salt $M X_{4}$ is "s". The corresponding solubility product is Ksp. 's' is given in term of Ksp by the relation :
Chemistry · Ionic Equilibrium · MCQ
Q8.Which one of the following has the minimum boiling point?
Chemistry · Hydrocarbons · MCQ
Q9.Which one the following does not have sp2 hybridized carbon?
Chemistry · Basics of Organic Chemistry · MCQ
Q10.Which of the following compound is not chiral?
Chemistry · Basics of Organic Chemistry · MCQ
Q11.Consider the acidity of the carboxylic acids: (a) $P h C O O H$ (b) o – $N O_{2} C_{6} H_{4} C O O H$ (c) p – $N O_{2} C_{6} H_{4} C O O H$ (d) m – $N O_{2} C_{6} H_{4} C O O H$ Which of the following order is correct?
Chemistry · Basics of Organic Chemistry · MCQ
Q12.Which of the following will have meso-isomer also?
Chemistry · Basics of Organic Chemistry · MCQ
Q13.Among the properties (a) reducing (b) oxidising (c) complexing, the set of properties shown by CN– ion towards metal species is :
Chemistry · Coordination Compounds · MCQ
Q14.The compound formed on heating chlorobenzene with chloral in the presence concentrated sulphuric acid is
Chemistry · Haloalkanes and Haloarenes · MCQ
Q15.On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q16.Which of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid?
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q17.Which one of the following reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q18.Acetyl bromide reacts with excess of $C H_{3} M g I$ followed by treatment with a saturated solution of $N H_{4} C l$ given
Chemistry · Alcohols Phenols and Ethers · MCQ
Q19.Which base is present in RNA but not in DNA?
Chemistry · Biomolecules · MCQ
Q20.Insulin production and its action in human body are responsible for the level of diabetes. This compound belongs to which of the following categories?
Chemistry · Biomolecules · MCQ
Q21.The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is
Chemistry · Practical Organic Chemistry · MCQ
Q22.The correct order of magnetic moments (spin only values in B.M.) among is : (Atomic numbers: Mn = 25; Fe = 26, Co =27)
Chemistry · Coordination Compounds · MCQ
Q23.Which of the following is the strongest base ?
Chemistry · Basics of Organic Chemistry · MCQ
Q24.Amongst the following compounds, the optically active alkane having lowest molecular mass is
Chemistry · Basics of Organic Chemistry · MCQ
Q25.Rate of the reaction is fastest when $Z$ is Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q26.The $I U P A C$ name of the compound is Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q27.Among the following compounds which can be dehydrated very easily is
Chemistry · Alcohols Phenols and Ethers · MCQ
Q28.Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?
Chemistry · D and F Block Elements · MCQ
Q29.Consider the following nuclear reactions $_{92}^{238} M \to_{Y}^{X} N + 2_{2}^{4} H e_{Y}^{X} N \to_{B}^{A} L + 2 β^{+}$ The number of neutrons in the element L is
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q30.Identify the correct statements regarding enzymes
Chemistry · Biomolecules · MCQ
Q31.For which of the following parameters the structural isomers $C_{2} H_{5} O H$ and $C H_{3} O C H_{3}$ would be expected to have the same values? (Assume ideal behaviour)
Chemistry · Solutions · MCQ
Q32.Which of the following liquid pairs shows a positive deviation from Raoult’s law?
Chemistry · Solutions · MCQ
Q33.Which one of the following aqueous solutions will exhibit highest boiling point?
Chemistry · Solutions · MCQ
Q34.Which one of the following statements is false?
Chemistry · Solutions · MCQ
Q35.In a hydrogen – oxygen fuel cell, combustion of hydrogen occurs to :
Chemistry · Electrochemistry · MCQ
Q36.Consider the following Eo values $E_{F e^{3 +} / F e^{2 +}}^{o}$ = 0.77 V; $E_{S n^{2 +} / S n}^{o}$ = -0.14 V Under standard conditions the potential for the reaction $S n$ (s) + 2 $F e^{3 +}$ (aq) $\to$ 2 $F e^{2 +}$ (aq) + $S n^{2 +}$ (aq) is :
Chemistry · Electrochemistry · MCQ
Q37.The standard e.m.f of a cell, involving one electron change is found to be 0.591 V at 25oC. The equilibrium constant of the reaction is (F = 96,500 C mol-1: R = 8.314 JK-1 mol-1)
Chemistry · Electrochemistry · MCQ
Q38.The limiting molar conductivities Λ° for NaCl, KBr and KCl are 126, 152 and 150 S cm2 mol-1 respectively. The Λ° for NaBr is
Chemistry · Electrochemistry · MCQ
Q39.In a cell that utilises the reaction $Z n$ (s) + 2 $H^{+}$ (aq) $\to$ $Z n^{2 +}$ (aq) + $H_{2}$ (g) addition of $H_{2} S O_{4}$ to cathode compartment, will
Chemistry · Electrochemistry · MCQ
Q40.The $E_{M^{3 +} / M^{2 +}}^{o}$ values for Cr, Mn, Fe and Co are – 0.41, +1.57, + 0.77 and +1.97 V respectively. For which one of these metals the change in oxidation state form +2 to +3 is easiest?
Chemistry · Electrochemistry · MCQ
Q41.In a first order reaction, the concentration of the reactant decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q42.The rate equation for the reaction 2A + B $\to$ C is found to be: rate k[A][B]. The correct statement in relation to this reaction is that the
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q43.The half – life of a radioisotope is four hours. If the initial mass of the isotope was 200 g, the mass remaining after 24 hours undecayed is
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q44.Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in :
Chemistry · P Block Elements · MCQ
Q45.Which one the following statement regarding helium is incorrect?
Chemistry · P Block Elements · MCQ
Q46.Excess of $K I$ reacts with $C u S O_{4}$ solution and then $N a_{2} S_{2} O_{3}$ solution is added to it. Which of the statements is incorrect for this reaction?
Chemistry · D and F Block Elements · MCQ
Q47.Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect?
Chemistry · D and F Block Elements · MCQ
Q48.Which one of the following complexes in an outer orbital complex?
Chemistry · Coordination Compounds · MCQ
Q49.Coordination compound have great importance in biological systems. In this context which of the following statements is incorrect?
Chemistry · Coordination Compounds · MCQ
Q50.Which one the following has largest number of isomers? (R = alkyl group, en = ethylenediamine)
Chemistry · Coordination Compounds · MCQ
Q51.The coordination number of central metal atom in a complex is determined by :
Chemistry · Coordination Compounds · MCQ
Q52.6.02 $\times$ 1020 molecules of urea are present in 100 ml of its solution. The concentration of urea solution is (Avogadro constant, NA = 6.02 $\times$ 1023 mol-1)
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q53.To neutralise completely 20 mL of 0.1 M aqueous solution of phosphorous acid ( $H_{3} P O_{3}$ ), the volume of 0.1 M aqueous $K O H$ solution required is
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q54.The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium hydroxide solution for complete…
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q55.Which of the following sets of quantum numbers is correct for an electron in 4f orbital?
Chemistry · Structure of Atom · MCQ
Q56.Consider the ground state of Cr atom (Z = 24). The number of electrons with the azimuthal quantum numbers, l = 1 and 2 are respectively
Chemistry · Structure of Atom · MCQ
Q57.The wavelength of the radiation emitted when in a hydrogen atom electron falls from infinity to stationary state 1, would be (Rydberg constant = 1.097 $\times$ 107 m-1)
Chemistry · Structure of Atom · MCQ
Q58.Which one of the following sets of ions represents the collection of isoelectronic species? (Atomic nos. : F = 9, Cl = 17, Na = 11, Mg = 12, Al = 13, K = 19, Ca = 20, Sc = 21)
Chemistry · Structure of Atom · MCQ
Q59.Which one of the following ions has the highest value of ionic radius?
Chemistry · Periodic Table and Periodicity · MCQ
Q60.Among $A l_{2} O_{3}$ , $S i O_{2}$ , $P_{2} O_{3}$ and $S O_{2}$ the correct order of acid strength is
Chemistry · Periodic Table and Periodicity · MCQ
Q61.The formation of the oxide ion $O^{2 -}$ (g) requires first an exothermic and then an endothermic step as shown below $O$ (g) + $e^{-}$ = $O_{(g)}^{-} Δ$ Ho = -142 kJmol-1 $O_{(g)}^{-}$ + $e^{-}$ = $O_{(g)}^{2 -} Δ$ Ho = 844 kJmol-1 This…
Chemistry · Periodic Table and Periodicity · MCQ
Q62.The correct order of bond angles (smallest first) in $H_{2} S$ , $N H_{3}$ , $B F_{3}$ and $S i H_{4}$ is
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q63.The bond order in $N O$ is 2.5 while that in $N O^{+}$ is 3. Which of the following statements is true for these two species?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q64.The states of hybridization of boron and oxygen atoms in boric acid ( $H_{3} B O_{3}$ ) are respectively
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q65.Which one of the following has the regular tetrahedral structure? (Atomic nos : B = 5, S = 16, Ni = 28, Xe = 54)
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q66.The maximum number of 90° angles between bond pair of electrons is observed in
Chemistry · Chemical Bonding and Molecular Structure · MCQ