NTA JEE Main 20th July 2021 Shift 2 - Chemistry

Outermost electronic configuration of a group 13 element, E, is 4s$$^2$$, 4p$$^1$$. The electronic configuration of an element of p-block period-five placed diagonally to element, E is:

Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value)?

The hybridisations of the atomic orbitals of nitrogen in NO$$_2^-$$, NO$$_2^+$$ and NH$$_4^+$$ respectively are:

A solution is 0.1M in Cl$$^-$$ and 0.001M in CrO$$_4^{2-}$$.
Solid AgNO$$_3$$ is gradually added to it. Assuming that the addition does not change in volume and
K$$_{sp}$$(AgCl) = 1.7 $$\times$$ 10$$^{-10}$$ M$$^2$$ and
K$$_{sp}$$(Ag$$_2$$CrO$$_4$$) = 1.9 $$\times$$ 10$$^{-12}$$ M$$^3$$.
Select correct statement from the following:

Cu$$^{2+}$$ salt reacts with potassium iodide to give:

The single largest industrial application of dihydrogen is:

Metallic sodium does not react normally with:

Which one of the following pairs of isomers is an example of metamerism?

In Carius method, halogen containing organic compound is heated with fuming nitric acid in the presence of:

Benzene on nitration gives nitrobenzene in presence of HNO$$_3$$ and H$$_2$$SO$$_4$$ mixture, where:

Which one of the following gases is reported to retard photosynthesis?

Consider two chemical reactions (A) and (B) that take place during metallurgical process:
(A) ZnCO$$_{3(s)} \xrightarrow{\Delta}$$ ZnO$$_{(s)}$$ + CO$$_{2(g)}$$
(B) 2ZnS$$_{(s)}$$ + 3O$$_{2(g)} \xrightarrow{\Delta}$$ 2ZnO$$_{(s)}$$ + 2SO$$_{2(g)}$$
The correct option of names given to them respectively is:

Spin only magnetic moment of an octahedral complex of Fe$$^{2+}$$ in the presence of a strong field ligand in BM is:

The major product (P) in the following reaction is:

In the above reactions, product A and product B respectively are:

Consider the above reaction, compound B is:

Bakelite is a cross-linked polymer of formaldehyde and:

Which one of the following statements is not true about enzymes?

The wavelength of electrons accelerated from rest through a potential difference of 40 kV is X $$\times 10^{-12}$$ m. The value of X is. (Nearest integer)
Given: Mass of electron = 9.1 $$\times 10^{-31}$$ kg
Charge on an electron = 1.6 $$\times 10^{-19}$$ C
Planck's constant = 6.63 $$\times 10^{-34}$$ Js

For a given chemical reaction A $$\to$$ B at 300 K the free energy change is -49.4 kJ mol$$^{-1}$$ and the enthalpy of reaction is 51.4 kJ mol$$^{-1}$$. The entropy change of the reaction is ___ JK$$^{-1}$$ mol$$^{-1}$$.

4 g equimolar mixture of NaOH and Na$$_2$$CO$$_3$$ contains xg of NaOH and yg of Na$$_2$$CO$$_3$$. The value of x is ___g. (Nearest integer)

When 0.15 g of an organic compound was analyzed using Carius method for estimation of bromine, 0.2397 g of AgBr was obtained. The percentage of bromine in the organic compound is ___. (Nearest integer)
[Atomic mass : Silver = 108, Bromine = 80]

Diamond has a three dimensional structure of C atoms formed by covalent bonds. The structure of diamond has face centred cubic lattice where 50% of the tetrahedral voids are also occupied by carbon atoms. The number of carbon atoms present per unit cell of diamond is ___.

The vapour pressures of A and B at 25$$^\circ$$C are 90 mmHg and 15 mm Hg respectively. If A and B are mixed such that the mole fraction of A in the mixture is 0.6, then the mole fraction of B in the vapour phase is $$x \times 10^{-1}$$. The value of x is ___. (Nearest integer)

Potassium chlorate is prepared by electrolysis of KCl in basic solution as shown by following equation.
6 OH$$^-$$ + Cl$$^- \to$$ ClO$$_3^-$$ + 3H$$_2$$O + 6e$$^-$$
A current of xA has to be passed for 10 h to produce 10.0 g of potassium chlorate. The value of x is ___. (Nearest integer)
(Molar mass of KClO$$_3$$ = 122.6 g mol$$^{-1}$$, F = 96500 C)

PCl$$_5$$(g) $$\to$$ PCl$$_3$$(g) + Cl$$_2$$(g)
In the above first order reaction the concentration of PCl$$_5$$ reduces from initial concentration 50 mol L$$^{-1}$$ to 10 mol L$$^{-1}$$ in 120 minutes at 300 K. The rate constant for the reaction at 300 K is x $$\times 10^{-2}$$ min$$^{-1}$$. The value of x is ___.
[Given log 5 = 0.6989]

For coagulation of 50 mL of a sol, 10 mL of 0.5M Cl$$^-$$ ion solution is required. What is the coagulating value of Cl$$^-$$ ion solution (Nearest integer)

An aqueous solution of NiCl$$_2$$ was heated with excess sodium cyanide in presence of strong oxidizing agent to form [Ni(CN)$$_6$$]$$^{2-}$$. The total change in number of unpaired electrons on metal centre is ___.