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JEE Advance - Chemistry (2019 - Paper 2 Offline)

1
Choose the correct option(s) for the following reaction sequence


Consider Q, R and S as major products.
Answer
C
D
2
Choose the correct option(s) that give(s) an aromatic compound as the major product.
Answer
C
D
3
The ground state energy of hydrogen atom is $$-$$13.6 eV. Consider an electronic state $$\psi $$ of He+ whose energy, azimuthal quantum number and magnetic quantum number are $$-$$3.4 eV, 2 and 0, respectively.

Which of the following statement(s) is(are) true for the state $$\psi $$?
Answer
A
C
4
Consider the following reactions (unbalanced).

$$Zn + Hot\,conc.\,{H_2}S{O_4}\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{}} G + R + X$$

$$Zn + conc.\,NaOH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{}} T + Q$$

$$G + {H_2}S + N{H_4}OH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{}} Z\,(a\,precipitate) + X + Y$$

Choose the correct option(s).
Answer
B
C
D
5
With reference to aqua-regia, choose the correct option(s).
Answer
A
B
C
6
Choose the correct option(s) from the following.
Answer
A
D
7
The cyanide process of gold extraction involves leaching out gold from its ore with CN$$-$$ in the presence of Q in water to form R. Subsequently, R is treated with T to obtain Au and Z. Choose the correct option(s).
Answer
A
B
C
8
Which of the following reactions produce(s) propane as a major product?
Answer
A
C
9
The decomposition reaction

$$2{N_2}{O_5}(g)\buildrel \Delta \over \longrightarrow 2{N_2}{O_4}(g) + {O_2}(g)$$

is started in a closed cylinder under isothermal isochoric condition at an initial pressure of 1 atm. After Y $$ \times $$ 103 s, the pressure inside the cylinder is found to be 1.45 atm. If the rate constant of the reaction is 5 $$ \times $$ 10-4s-1, assuming ideal gas behaviour, the value of Y is ...............
Answer
2.3
10
The mole fraction of urea in an aqueous urea solution containing 900 g of water is 0.05. If the density of the solution is 1.2 g cm$$-$$3, then molarity of urea solution is ................

(Given data : Molar masses of urea and water are 60 g mol$$-$$1 and 18 g mol$$-$$1, respectively)
Answer
2.98
11
Total number of hydroxyl groups present in a molecule of the major product P is ..............

JEE Advanced 2019 Paper 2 Offline Chemistry - Hydrocarbons Question 24 English
Answer
6
12
Total number of $$cis\,N - Mn - Cl$$ bond angles (that is $$Mn - N$$ and $$Mn - Cl$$ bonds in cis positions) present in a molecule of $$cis[Mn{(en)_2}C{l_2}]$$ complex is ..................

(en = NH2CH2CH2NH2)
Answer
6
13
The amount of water produced (in g) in the oxidation of 1 mole of rhombic sulphur by conc. HNO3 to a compound with the highest oxidation state of sulphur is ..............

(Given data : Molar mass of water = 18 g mol$$-$$1)
Answer
288
14
Total number of isomers, considering both structural and stereoisomers of cyclic ethers with the molecular formula C4H8O is .................
Answer
10
15
Consider the Bohr's model of a one-electron atom where the electron moves around the nucleus. In the following List-I contains some quantities for the nth orbit of the atom and List-II contains options showing how they depend on n.

JEE Advanced 2019 Paper 2 Offline Chemistry - Structure of Atom Question 7 English
Which of the following options has the correct combination considering List-I and List-II?
Answer
(A)
(III), (P)
16
Consider the Bohr's model of a one-electron atom where the electron moves around the nucleus. In the following List-I contains some quantities for the nth orbit of the atom and List-II contains options showing how they depend on n.

JEE Advanced 2019 Paper 2 Offline Chemistry - Structure of Atom Question 8 English
Which of the following options has the correct combination considering List-I and List-II?
Answer
(C)
(I), (T)
17
Which of the following options has correct combination considering List-I and List-II?
Answer
(B)
(IV), (Q), (R)
18
Which of the following options has correct combination considering List-I and List-II?
Answer
(A)
(II), (P), (S), (U)