WB JEE 2016
WB JEE / 40 questions
2026Tue, May 17, 2016 11:00 AM40 PYQs
1Alcohol And Ether
Which of the following compounds would not react with Lucas reagent at room temperature.
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2Alcohol And Ether
Which of the following will be dehydrated most readily in alkaline medium?
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3Aldehyde And Ketone
Amongst the following compounds, the one that will not respond to Cannizzaro reaction upon treatment with alkali is
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4Aldehyde And Ketone
Amongst the following compounds, the one which would not respond to iodoform test is :
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5Atomic Structure
The energy required to break one mole of hydrogen-hydrogen bonds in H2 is 436 kJ. What is the longest wavelength of light required to break a single hydrogen-hydrogen bond?
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6Atomic Structure
The time taken for an electron to complete one revolution in Bohr orbit of hydrogen atom is
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7Chemical Bonding
The boiling points of HF, HCl, HBr and HI follow the order
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8Chemical Bonding
The correct order of O\(-\)O bond length in O2, H2O2 and O3 is
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9Chemical Bonding
The number of \(\sigma\) and \(\pi\) bonds between two carbon atoms in calcium carbide are
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10Chemical Bonding
Of the following molecules, which have shape similar to CO2 ?
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11Chemistry In Everyday Life
The correct structure of the drug paracetamol is
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12D And F Block Elements
Which of the following statements regarding Lanthanides is false?
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13Electrochemistry
The order of equivalent conductance at infinite dilution for LiCl, NaCl and KCl is
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14Gaseous State
Amongst the following, which should have the highest rms speed at the same temperature?
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15General Organic Chemistry
The correct order of basicity of the following compounds is
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16General Organic Chemistry
From the following compounds, choose the one which is not aromatic.
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17Halogen Derivatives
Amongst the following compounds, the one(s) which readily react with ethanolic KCN.
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18Hydrocarbons
Which of the following reactions will not result in the formation of carbon-carbon bonds?
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19Hydrocarbons
Ozonolysis of an alkene produces only one dicarbonyl compound. The structure of the alkene is
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20Hydrocarbons
Identify X in the following sequence of reactions.
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21Hydrocarbons
The major products obtained during ozonolysis of 2, 3-dimethyl-1-butene and subsequent reductions with Zn and H2O are
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22Hydrogen And Its Compounds
Which statement is not correct for ortho and para hydrogen?
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23Ionic Equilibrum
The molar solubility (in mol L\(-\)1) of a sparingly soluble salt MX4 is 'S'. The corresponding solubility product is Ksp. S in terms of 'Ksp' is given by the relation
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24Ionic Equilibrum
In which of the following mixed aqueous solutions, pH = pKa at equilibrium?1. 100 mL of 0.1 M CH3COOH + 100 mL of 0.1 MCH3COONa(2) 100 mL of 0.1 MCH3COOH + 50 mL of 0.1 M NaOH(3) 100 mL of 0.1 M CH3COOH + 100 mL of 0.1 M NaOH(4) 100 mL of 0...
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25Isomerism
Choose the correct statement(s) among the following.
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26Liquid Solution
If p\(^\circ\) and p are the vapour pressure of the pure solvent and solution and n1 and n2 are the moles of solute and solvent respectively in the solution then the correct relation between p and p\(^\circ\) is
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27Metallurgy
The metal which can be used to obtain metallic Cu from aqueous CuSO4 solution is
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28Periodic Table
Which of the following arrangements is correct in respect of solubility in water?
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29Periodic Table
An element X belongs to fourth period and fifteenth group of the periodic table. Which of the following statements is true?
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30Practical Chemistry
Compound X is tested and the results are shown in the table.
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31Radioactivity And Nuclear Chemistry
If radium and chlorine combine to form radium chloride, the compound would be
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32Radioactivity And Nuclear Chemistry
An element E loses one \(\alpha\) and two \(\beta\)-particles in three successive stages. The resulting element will be
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33Solid State
Ionic solids with Schottky defect may contain in their structure
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34Some P Block Elements
Nitrogen dioxide is not produced on heating
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35Some P Block Elements
In the solid state, PCl5 exists as
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36Some P Block Elements
The acid in which O\(-\)O bonding is present is
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37Some P Block Elements
Which of the following statement(s) is (are) correct when a mixture of NaCl and K2Cr2O7 is gently warmed with conc. H2SO4?
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38Surface Chemistry
Point out the false statement.
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39Thermodynamics
Which of the following plots represent an exothermic reaction?
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40Thermodynamics
The condition for a reaction to occur spontaneously is
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