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JEE Main 2018 (Online) 16th April Morning Slot

JEE Main / 30 questions

2026Mon, Apr 16, 2018 3:30 AM30 PYQs
1Aldehydes Ketones And Carboxylic Acids
The major product of the following reaction is :
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2Aldehydes Ketones And Carboxylic Acids
Which of the following compounds will most readily be dehydrated to give alkene under acidic condition ?
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3Aldehydes Ketones And Carboxylic Acids
The major product B formed in the following reaction sequence is :
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4Biomolecules
Among the following, the incorrect statement is :
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5Chemical Bonding And Molecular Structure
The incorrect geometry is represented by :
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6Chemical Bonding And Molecular Structure
Which of the following conversions involves change in both shape and hybridisation ?
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7Chemical Equilibrium
The gas phase reaction 2NO2(g) \(\to\) N2O4(g) is an exothermic reaction. The decomposition of N2O4, in equilibrium mixture of NO2(g) and N2O4(g), can be increased by :
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8Chemical Kinetics And Nuclear Chemistry
If 50% of a reaction occurs in 100 second and 75% of the reaction occurs in 200 secod, the order of this reaction is :
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9Chemistry In Everyday Life
The correct match between items of List - I and List - II is :

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10Compounds Containing Nitrogen
Products A and B formed in the following reactions are respectively :
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11Coordination Compounds
In Wilkinson's catalyst, the hybridization of central metal ion and its shape are respectively :
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12Coordination Compounds
Which of the following complexes will shows geometrical isomerism ?
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13D And F Block Elements
The incorrect statement is :
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14D And F Block Elements
When XO2 is fused with an alkali metal hydroxide in presence of an oxidizing agent such as KNO3 ; a dark green product is formed which disproportioates in acidic solution to afforda dark purple solution. X is :
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15Electrochemistry
When 9.65 ampere current was passed for 1.0 hour into nitrobenzene in acidic medium, the amount of p-aminophenol produced is :
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16Gaseous State
Assuming ideal gas behaviour, the ratio of density of ammonia to that of hydrogen chloride at same temperature and pressure is : (Atomic wt. of Cl = 35.5 u)
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17Haloalkanes And Haloarenes
The most polar compound among the following is :
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18Haloalkanes And Haloarenes
The major product of the following reaction is :
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19Hydrocarbons
The major product of the following reaction is :
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20Isolation Of Elements
In the extraction of copper from its sulphate ore, metal is finally obtained by the oxidation of cuprous sulphide with :
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21P Block Elements
A group 13 element 'X' reacts with chlorine gas to produce a compound XCl3. XCl3 is electron deficient and easily reacts with NH3 to form Cl3X \(\leftarrow\) NH3 adduct ; however, XCl3 does not dimerize X is :
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22P Block Elements
Among the oxides of nitrogen : N2O3, N2O4 and N2O5; the molecule(s) having nitrogen-nitrogen bond is / are :
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23Practical Organic Chemistry
In a complexometric titration of metal ion with ligand
M(Metal ion) + L(Ligand) \(\to\) C(Complex) end point is estimated spectrophoto - metrically (through light absorption). If 'M' and 'C' do not absorb light and only 'L' absorbs, t...
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24Practical Organic Chemistry
For standardizing NaOH solution, which of the following is used as a primary standard ?
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25Solutions
The mass of a non-volatile, non-electrolyte solute (molar mass = 50 g mol-1 ) needed to be dissolved in 114 g octane to reduce its vapour pressure to 75%, is :
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26Some Basic Concepts Of Chemistry
An unknown chlorohydrocarbon has 3.55% of chlorine. If each molecule of the hydrocarbon has one chlorine atom only; chlorine atoms present in 1 g of chlorohydrocarbon are :
(Atomic wt. of Cl = 35.5 u; Avogadro constant = 6.023 $$ \times $...
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27Structure Of Atom
Which of the following statements is false ?
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28Surface Chemistry
Which one of the following is not a property of physical adsorption?
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29Thermodynamics
At 320 K, a gas A2 is 20% dissociated to A(g). The standard free energy change at 320 K and 1 atm in J mol-1 is approximately : (R = 8.314 JK-1 mol-1; ln2 = 0.693; ln 3 = 1.098)
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30Thermodynamics
For which of the following processes, \(\Delta\)S is negative ?
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