Group 15

The gas produced by treating an aqueous solution of ammonium chloride with sodium nitrite is

Nitrogen gas is obtained by thermal decomposition of

Given below are two statements :

Statement I : The pentavalent oxide of group-15 element, $\mathrm{E_2O_5}$, is less acidic than trivalent oxide, $\mathrm{E_2O_3}$, of the same element.

Statement II : The acidic character of trivalent oxide of group 15 elements, $\mathrm{E_2O_3}$, decreases down the group.

In light of the above statements, choose most appropriate answer from the options given below :

Among the given oxides of nitrogen ; $\mathrm{N_2O}$, $\mathrm{N_2O_3}$, $\mathrm{N_2O_4}$ and $\mathrm{N_2O_5}$, the number of compound/(s) having N - N bond is :

$$\mathrm{A\xrightarrow{573\ K}Red\ phosphorus\xrightarrow[under\ pressure]{heat;\ 803\ K}B}$$

Red phosphorus is obtained by heating "A" at 573 K, and can be converted to "B" by heating at 803 K under pressure.

A and B, respectively, are

Match List - I with List - II, match the gas evolved during each reaction.

Choose the correct answer from the options given below :

White phosphorus reacts with thionyl chloride to give

Concentrated $\mathrm{HNO_3}$ reacts with Iodine to give

Dinitrogen and dioxygen, the main constituents of air do not react with each other in atmosphere to form oxides of nitrogen because

The correct statement(s) related to oxoacids of phosphorous is(are)

With reference to aqua regia, choose the correct option(s)

The compound(s) which generate(s) $\ce{N2}$ gas upon thermal decomposition below 300°C is (are)

Based on the compounds of group 15 elements, the correct statement(s) is (are)

Which of the following combination will produce $\ce{H2}$ gas?

W and X are, respectively

Y and Z are, respectively

The nitrogen containing compound produced in the reaction of $\ce{HNO3}$ with $\ce{P4O10}$

The reaction of zinc with dilute and concentrated nitric acid, respectively, produces :

The total number of lone pairs of electrons in $\ce{N2O3}$ is

Assertion : Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen.

Reason : The reaction between nitrogen and oxygen requires high temperature.