[Download PDF] NTA JEE Main 4th September 2020 Shift 2

Instructions

For the following questions answer them individually

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 26

The shortest wavelength of H atom in the Lyman series is $$\lambda_1$$. The longest wavelength in the Balmer series of He$$^+$$ is:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 27

The process that is NOT endothermic in nature is:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 28

The reaction in which the hybridisation of the underlined atom is affected is

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 29

The molecule in which hybrid MOs involve only one d-orbital of the central atom is:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 30

Five moles of an ideal gas at 1 bar and 298 K is expanded into vacuum to double the volume. The work done is:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 31

If the equilibrium constant for $$A \rightleftharpoons B + C$$ is $$K_{eq}^{(1)}$$ and that of $$B + C \rightleftharpoons P$$ is $$K_{eq}^{(2)}$$, the equilibrium constant for $$A \rightleftharpoons P$$ is:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 32

An alkaline earth metal 'M' readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt structure. M is

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 33

Which of the following compounds will form the precipitate with aq. AgNO$$_3$$ solution most readily?

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 34

Among the following compounds, which one has the shortest C-Cl bond?

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 35

The processes of calcination and roasting in metallurgical industries, respectively, can lead to:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 36

250 mL of a waste solution obtained from the workshop of a goldsmith contains 0.1 M AgNO$$_3$$ and 0.1 M AuCl. The solution was electrolyzed at 2 V by passing a current of 1 A for 15 minutes. The metal/metals electrodeposited will be: $$\left(E^0_{Ag^+/Ag} = 0.80V, E^0_{Au^+/Au} = 1.69V\right)$$

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 37

A sample of red ink (a colloidal suspension) is prepared by mixing eosine dye, egg white, HCHO and water. The component which ensures stability of the ink sample is:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 38

The incorrect statement(s) among (a) - (c) is (are):
(a) W(VI) is more stable than Cr(VI).
(b) in the presence of HCl, permanganate titrations provide satisfactory results.
(c) some lanthanoid oxides can be used as phosphors.

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 39

The Crystal Field Stabilization Energy (CFSE) of $$[CoF_3(H_2O)_3]$$ $$(\Delta_0 < P)$$ is:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 40

The one that can exhibit highest paramagnetic behaviour among the following is: gly = glycinato; bpy = 2, 2'-bipyridine

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 41

The major product [B] in the following reaction is:

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 42

The major product [R] in the following sequence of reaction is:

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 43

The major product [C] of the following reaction sequence will be:

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 44

In the following reaction sequence, [C] is:

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 45

The mechanism of action of "Terfenadine" (Seldane) is:

Solution

NTA JEE Main 4th September 2020 Shift 2 - Chemistry - Question 46

A 100 mL solution was made by adding 1.43 g of $$Na_2CO_3 \cdot xH_2O$$. The normality of the solution is 0.1 N. The value of x is __________ (The atomic mass of Na is 23 g/mol)