STD 11 - 6.2. Equilibrium - II (icon Equilibrium) — NEET STD 11 Science — Question

$A\,\xrightarrow{{{k_1}}}B$        ${k_1}\, = \,1.26\, \times \,{10^{ - 4}}\,{S^{ - 1}}$

$A\,\xrightarrow{{{k_2}}}C$       ${k_2}\, = \,3.8\, \times \,{10^{ - 5}}\,{S^{ - 1}}$

$(A)$ Atoms of different elements differ in mass.

$(B)$ Matter consists of divisible atoms.

$(C)$ Compounds are formed when atoms of different element combine in a fixed ratio.

$(D)$ All the atoms of given element have different properties including mass.

$(E)$ Chemical reactions involve reorganisation of atoms.

Choose the correct answer from the options given below :

$2NO + 2H_2 \longrightarrow N_2 + 2H_2O$

has following mechanism

Step $-I$ : $2NO \longrightarrow N_2O_2$

Step $-II$ : $N_2O_2 + H_2 \longrightarrow N_2O + H_2O$

Step $-III$ : $N_2O + H_2 \longrightarrow N_2 + H_2O$

Which of the following substance is a reaction intermediate