NTA JEE Mains 4th April Shift 2 2026

Consider the following molecules/species:

The correct order of carbon-oxygen double bond length is:

Consider $$|x|$$ is the difference in oxidation states of Mn in highest manganese fluoride and highest manganese oxide. The ions with $$|x|$$ number of unpaired electrons from the following are:

A. Sc$$^{3+}$$

B. Zn$$^{2+}$$

C. V$$^{2+}$$

D. Fe$$^{2+}$$

E. Co$$^{2+}$$
choose the correct answer from the options given below : 

Consider the given graph showing variation of reactant concentration with time. Three different reactions were started with identical initial concentration of reactants. Which of the following statement is correct?

Compound (X) is subjected to the sequence of reactions as shown above:
Molar mass of the major product (Y) formed is ______ g mol$$^{-1}$$.
(Given molar mass in g mol$$^{-1}$$ C:12, H: 1, O: 16)

The following structures are

The descending order of acidity among the following compounds is:

choose the correct answer from the options given below:

The strongest conjugate acid will result from:

A D-aldotetrose on oxidation with concentrated HNO$$_3$$ resulted in optically inactive dicarboxylic acid. The structure of the D-aldotetrose is:

Among Fe$$^{3+}$$, Pb$$^{2+}$$, Cu$$^{2+}$$ and Mn$$^{2+}$$, identify the one that gets precipitated out while passing H$$_2$$S in presence of NH$$_4$$OH as group reagent. The highest possible oxidation state of the corresponding metal is

Match the List I with List II: 

choose the correct answer from the options given below