# 10th April Slot 2

None

### JEE Main 2019 Question Paper All Questions

Chemistry
1. A plane is inclined at an angle with respect to the horizontal. A particle is projected with a speed from the base of the plane , making an angle With respect to the plane as shown in the  figure . The distance from the base ,at which the particle hits the plane is close to:

 a) b) c) d)
Chemistry -
Marked right : 15.2% students | Marked incorrect : 8.799999999999999% students | Marked not attempted : 76.0% students

Correct Option: a

2. Number of stereo centres present in the linear structure are X and cyclic structures of glucose are Y :

(if x=30, y= 10 then answer XY will be 3010).

 a) 54 b) 44 c) 55 d) 45
Chemistry - Organic Compounds containing Halogens Biomolecules Haloalkanes and Haloarenes
Marked right : 27.37226277372263% students | Marked incorrect : 12.773722627737227% students | Marked not attempted : 59.854014598540154% students

Correct Option: d

View Solution
3. The  of a  solution will be  given  and

(Response should be upto only two decimal digit like 78.78 or 0.08).

 a) 2.65 b) 4.35 c) 4.65 d) 5.35
Chemistry - Physical and Chemical Equilibria Equilibrium Equilibrium
Marked right : 11.76470588235294% students | Marked incorrect : 10.407239819004525% students | Marked not attempted : 77.82805429864254% students

Correct Option: d

View Solution
4. The major product  in the following reaction is :

 a) b) c) d)
Chemistry - Organic Compounds containing Halogens Haloalkanes and Haloarenes
Marked right : 16.50485436893204% students | Marked incorrect : 19.57928802588997% students | Marked not attempted : 63.915857605178% students

Correct Option: c

View Solution
5. Which of the following is NOT a correct method of the preparation of benzylamine from cyanobenzene ?

 a) b) c) d)
Chemistry - Organic Compounds with Functional Groups Containing Oxygen and Nitrogen Organic Compounds Containing Nitrogen Organic Compounds Containing Nitrogen
Marked right : 28.730158730158728% students | Marked incorrect : 24.285714285714285% students | Marked not attempted : 46.98412698412698% students

Correct Option: d

View Solution
6. The highest possible oxidation states of uranium and plutonium, respectively, are :

 a) b) c) d)
Chemistry - p- d- and f-block elements d - and f - BLOCK ELEMENTS d and f Block Elements
Marked right : 28.27586206896552% students | Marked incorrect : 11.264367816091953% students | Marked not attempted : 60.45977011494252% students

Correct Option: a

View Solution
7. A hydrated solid  on heating initially gives a monohydrated compound   upon heating above  leads to an anhydrous white powder  and respectively are :

 a) Washing soda and soda ash. b) Baking soda and dead burnt plaster c) Washing soda and dead burnt plaster. d) Baking soda and soda ash.
Chemistry - Hydrogen and s-block Elements S - Block Elements (Alkali and Alkaline Earth Metals) s- Block Elements ( Alkali and Alkaline earth metals )
Marked right : 29.583333333333332% students | Marked incorrect : 16.041666666666668% students | Marked not attempted : 54.37499999999999% students

Correct Option: a

View Solution
8. The correct order of the first ionization enthalpies is :

 a) b) c) d)
Chemistry - p- d- and f-block elements Classification of elements and periodicity in properties Classification of Elements and Periodic table d - and f - BLOCK ELEMENTS d and f Block Elements
Marked right : 43.02325581395349% students | Marked incorrect : 16.701902748414376% students | Marked not attempted : 40.27484143763213% students

Correct Option: b

View Solution
9. The correct statements among (a) to (d) are :

(a) saline hydrides produce  gas when reacted with

(b) reaction of  with   leads to

(c)  and  are electron-rich and electron precise respectively.

(d)  and  are called molecular hydrides.

 a) (a),(b),(c) and (d). b) (c) and (d) only. c) (a),(c) and (d) only. d) (a),(b) and (c) only.
Chemistry - Hydrogen and s-block Elements Hydrogen Hydrogen
Marked right : 28.258064516129032% students | Marked incorrect : 26.064516129032256% students | Marked not attempted : 45.67741935483871% students

Correct Option: a

View Solution
10. The ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about 9. The spectral series are :

 a) Lymen and Paschen b) Balmer and Brackett c) Brackett and Pfund d) Paschen and Pfund
Chemistry - Atomic Structure
Marked right : 33.415841584158414% students | Marked incorrect : 9.900990099009901% students | Marked not attempted : 56.683168316831676% students

Correct Option: a

View Solution
11. The correct statement is :

 a) aniline is a froth stabilizer. b) zincite is a carbonate ore. c) sodium cyanide cannot be used in the metallurgy of silver. d) zone refining process cannot be used for the refining of titanium.
Chemistry - General Principle and process of Isolation of metals General Principles and processes of Isolation Elements
Marked right : 43.32129963898917% students | Marked incorrect : 16.064981949458485% students | Marked not attempted : 40.61371841155235% students

Correct Option: a

View Solution
12. The increasing order of nucleophilicity of the following nucleophiles is :

 a) b) c) d)
Chemistry - Principles of Organic Chemistry and Hydrocarbons Some Basic Principles of Organic Chemistry Organic Chemistry - some Basic principles and techniques
Marked right : 22.58064516129032% students | Marked incorrect : 17.634408602150536% students | Marked not attempted : 59.78494623655914% students

Correct Option: d

View Solution
13. The correct option among the following is :

 a) Colloidal medicines are more effective because they have small surface area. b) Addition of alum to water makes it unfit for drinking . c) Colloidal particles in lyophobic sols can be precipitated by electrophoresis. d) Brownian motion in colloidal solution is faster if the viscosity of the solution is very high.
Chemistry - Surface Chemistry Surface Chemistry
Marked right : 11.969380654140572% students | Marked incorrect : 12.178148921363952% students | Marked not attempted : 75.85247042449548% students

Correct Option: c

View Solution
14. Which one of these factors does not effect the stability of conformation in acyclic compounds?

 a) Steric interaction b) Torsional strain c) Electrostatic forces of interaction d) Angle strain
Chemistry - Some Basic Principles of Organic Chemistry
Marked right : 26.576576576576578% students | Marked incorrect : 22.07207207207207% students | Marked not attempted : 51.35135135135135% students

Correct Option: d

View Solution
15. In Chromatography, which of the following statements is INCORRECT for  ?

 a) value depends on the type of chromatography. b) The value of  can not be more than one. c) Higher  value means higher adsorption. d) value is dependent on the mobile phase.
Chemistry - Theoretical Principles of Experimental Chemistry Purification and Characterisation of Organic Compounds Principles Related to Practical Chemistry Organic Chemistry - some Basic principles and techniques
Marked right : 9.233406808719078% students | Marked incorrect : 7.200587803085965% students | Marked not attempted : 83.56600538819495% students

Correct Option: c

View Solution
16. The crystal field stabilization energy (CFSE) of   and , respectively, are :

 a) b) c) d)
Chemistry - p- d- and f-block elements d - and f - BLOCK ELEMENTS Co-ordination Compounds d and f Block Elements Coordination compounds:
Marked right : 17.68595041322314% students | Marked incorrect : 12.396694214876034% students | Marked not attempted : 69.91735537190083% students

Correct Option: b

View Solution
17. The difference between  and  , when the combustion of one mole of heptane is carried out at a temperature T, (in terms of RT) is equal to:

(Response should be in integer with sign like -2 or +3).

 a) -4 b) -3 c) 4 d) 3
Chemistry - Chemical Thermodynamics Thermodynamics
Marked right : 8.974358974358974% students | Marked incorrect : 12.454212454212454% students | Marked not attempted : 78.57142857142857% students

Correct Option: a

View Solution
18. Which one of the following graphs between molar conductivity  versus  is correct?

 a) b) c) d)
Chemistry - Electrochemistry Redox Reaction and Electrochemistry Electrochemistry
Marked right : 23.91304347826087% students | Marked incorrect : 15.869565217391305% students | Marked not attempted : 60.21739130434782% students

Correct Option: a

View Solution
19. The correct match between Item - and Item - is :

 Item - I Item-II (a) Highest density polythene (I) Peroxide catalyst (b) Polyacrylonitrile (II) Condensation at high temperature & pressure (c) Novolac (III) Ziegler-Natta Catalyst (d) Nylon 6 (IV) Acid or base catalyst

 a) b) c) d)
Chemistry - Polymers Polymers
Marked right : 10.057315886233372% students | Marked incorrect : 7.916080891099816% students | Marked not attempted : 82.02660322266682% students

Correct Option: d

View Solution
20. Points  and  in the following plot respectively correspond to

most probable velocity

 a) b) c) d)
Chemistry - States of Matter States of matter States of Matter : Gases and liquids
Marked right : 19.15367483296214% students | Marked incorrect : 15.14476614699332% students | Marked not attempted : 65.70155902004454% students

Correct Option: a

View Solution
21. The major product obtained in the given reaction is :

 a) b) c) d)
Chemistry - Principles of Organic Chemistry and Hydrocarbons Hydrocarbons Organic Compounds containing Halogens Hydrocarbons Haloalkanes and Haloarenes
Marked right : 8.323959505061868% students | Marked incorrect : 5.410573678290214% students | Marked not attempted : 86.26546681664792% students

Correct Option: c

View Solution
22. The minimum amount of  consumed per gram of reactant is for the reaction :

(Given atomic mass : )

 a) b) c) d)
Chemistry - Some basic concepts in chemistry
Marked right : 9.238095238095239% students | Marked incorrect : 14.857142857142858% students | Marked not attempted : 75.90476190476191% students

Correct Option: a

View Solution
23. For the reaction ,

Which of the following statement is INCORRECT ?

 a) The equilibrium constant is large suggestive of reaction going to completion and so no catalyst is required . b) The equilibrium will shift in forward direction as the pressure increases. c) The equilibrium constant decreases as the temperature increases. d) The addition of inert gas at constant volume will not affect the equilibrium constant.
Chemistry - Physical and Chemical Equilibria Chemical Thermodynamics Equilibrium Thermodynamics Equilibrium
Marked right : 17.313915857605178% students | Marked incorrect : 19.25566343042071% students | Marked not attempted : 63.43042071197411% students

Correct Option: a

View Solution
24. $1\; g$ of a non-volatile non-electrolyte solute is dissolved in $100 \; g$ of two different solvents $A$ and $B$ whose ebulliscopic constants are in the ratio of $1:5$. The ratio of the elevation in their boiling points, $\frac{\Delta T_{b}\left ( A \right )}{\Delta T_{b}\left ( B \right )},$ is:

 a) b) c) d)
Chemistry - Solutions
Marked right : 31.712962962962965% students | Marked incorrect : 6.25% students | Marked not attempted : 62.03703703703704% students

Correct Option: c

View Solution
25. For the reaction of  with , the rate constant is  at  and  at  The activation energy for the reaction, in  is :

(Response should be in integer only like 78 or 560).

 a) 168 b) 150 c) 72 d) 59
Chemistry - Chemical Kinetics and Surface Chemistry Chemical kinetics
Marked right : 5.907626208378089% students | Marked incorrect : 26.852846401718583% students | Marked not attempted : 67.23952738990333% students

Correct Option: a

View Solution
26. The INCORRECT statement is :

 a) the gemstone,ruby,has  ions occupying the octahedral sites of beryl. b) the spin-only magnetic moment of  is c) the color of is violet as it absorbs the yellow light. d) the spin-only magnetic moments of  and  are nearly similar.
Chemistry - p- d- and f-block elements d - and f - BLOCK ELEMENTS d and f Block Elements
Marked right : 15.36231884057971% students | Marked incorrect : 22.318840579710145% students | Marked not attempted : 62.31884057971014% students

Correct Option: a

View Solution
27. Compound  shows positive iodoform test. Oxidation of  with  gives acid  Anhydride of  is used for the preparation of phenolphthalein. Compound  is :

 a) b) c) d)
Chemistry - Organic Compounds with Functional Groups Containing Oxygen and Nitrogen Organic Compounds containing Oxygen Aldehydes, Ketones and Carboxylic Acids
Marked right : 21.934369602763386% students | Marked incorrect : 15.198618307426598% students | Marked not attempted : 62.86701208981002% students

Correct Option: d

View Solution
28. The number of pentagons in $C_{60}$ are x and trigons (triangles) in white phosphorus are y, then write answer xy.

(if x=30, y= 1 then answer xy will be  301).

 a) 203 b) 124 c) 123 d) 204
Chemistry - p- Block Elements
Marked right : 33.98328690807799% students | Marked incorrect : 12.256267409470752% students | Marked not attempted : 53.760445682451255% students

Correct Option: b

View Solution
29. Air pollution that occurs in sunlight is:

 a) reducing smog b) acid rain c) oxidising smog d) fog
Chemistry - Biological , Industrial and Environmental chemistry Environmental Chemistry Environmental Chemistry
Marked right : 50.83532219570406% students | Marked incorrect : 15.632458233890215% students | Marked not attempted : 33.53221957040573% students