NTA JEE Main 5th September 2020 Shift 1

Instructions

For the following questions answer them individually

NTA JEE Main 5th September 2020 Shift 1 - Question 31


The increasing order of the acidity of the $$\alpha$$-hydrogen of the following compounds is:

NTA JEE Main 5th September 2020 Shift 1 - Question 32


In the following reaction sequence the major products A and B are:

NTA JEE Main 5th September 2020 Shift 1 - Question 33


The condition that indicates a polluted environment is:

NTA JEE Main 5th September 2020 Shift 1 - Question 34


A diatomic molecule $$\text{X}_2$$ has a body-centred cubic (bcc) structure with a cell edge of $$300\,\text{pm}$$. The density of the molecule is $$6.17\,\text{g cm}^{-3}$$. The number of molecules present in $$200\,\text{g}$$ of $$\text{X}_2$$ is: (Avogadro constant $$(N_A) = 6 \times 10^{23}\,\text{mol}^{-1}$$)

NTA JEE Main 5th September 2020 Shift 1 - Question 35


A flask contains a mixture of compounds A and B. Both compounds decompose by first-order kinetics. The half-lives for A and B are $$300\,\text{s}$$ and $$180\,\text{s}$$, respectively. If the concentrations of A and B are equal initially, the time required for the concentration of A to be four times that of B (in s) is: (Use $$\ln 2 = 0.693$$)

NTA JEE Main 5th September 2020 Shift 1 - Question 36


Identify the correct molecular picture showing what happens at the critical micellar concentration (CMC) of an aqueous solution of a surfactant.

NTA JEE Main 5th September 2020 Shift 1 - Question 37


An Ellingham diagram provides information about:

NTA JEE Main 5th September 2020 Shift 1 - Question 38


The structure of $$\text{PCl}_5$$ in the solid state is:

NTA JEE Main 5th September 2020 Shift 1 - Question 39


The correct electronic configuration and spin-only magnetic moment (BM) of $$\text{Gd}^{3+}$$ ($$Z = 64$$), respectively, are:

NTA JEE Main 5th September 2020 Shift 1 - Question 40


The values of the crystal field stabilization energies for a high spin $$d^6$$ metal ion in octahedral and tetrahedral fields, respectively, are:

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