NTA JEE Main 18th March 2021 Shift 2

Given below are two statements:
Statement I : Bohr's theory accounts for the stability and line spectrum of Li$$^+$$ ion.
Statement II : Bohr's theory was unable to explain the splitting of spectral lines in the presence of a magnetic field.
In the light of the above statements, choose the most appropriate answer from the options given below:

The first ionization energy of magnesium is smaller, as compared to that of elements X and Y, but higher than that of Z. The elements X, Y and Z, respectively, are :

The oxidation states of nitrogen in NO, NO$$_2$$, N$$_2$$O and NO$$_3^-$$ are in the order of :

In basic medium, H$$_2$$O$$_2$$ exhibits which of the following reactions?
(A) Mn$$^{2+} \rightarrow$$ Mn$$^{4+}$$
(B) I$$_2 \rightarrow$$ I$$^-$$
(C) PbS $$\rightarrow$$ PbSO$$_4$$
Choose the most appropriate answer from the options below :

Match list-I with list-II :

Choose the most appropriate answer, the option given below :

Given below are two statements :
Statement I : C$$_2$$H$$_5$$OH and AgCN both can generate nucleophile.
Statement II : KCN and AgCN both will generate nitrile nucleophile with all reaction conditions.
Choose the most appropriate option :

In the following molecules,

Hybridisation of carbon a, b and c respectively are :

Given below are two statements :
Statement I : Non-biodegradable wastes are generated by the thermal power plants.
Statement II : Bio-degradable detergents leads to eutrophication.
In the light of the above statements, choose the most appropriate answer from the option given below:

The oxide that shows magnetic property is: