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


Important Questions on The p-Block Elements
Given below are two statements: one is labelled as Assertion and the other is
labelled as Reason.
Assertion: Flourine forms one oxoacid.
Reason: Flourine has smallest size amongst all halogens and is highly electronegative.
In the light of the above statements, choose the most appropriate answer from the Question: options given below.

Given below are two statements :
Statement I: The pentavalent oxide of group- element, , is less acidic than trivalent oxide, , of the same element.
Statement II : The acidic character of trivalent oxide of group elements, , decreases down the group.
In light of the above statements, choose most appropriate answer from the options given below

Match List-I with List-II
List-I | List-II | ||
(A) | (I) | Amphoteric | |
(B) | (II) | Basic | |
(C) | (III) | Neutral | |
(D) | (IV) | Acidic |
Choose the correct answer from the options given below



Match List-I with Match List-II
List-I (Metal) |
List-II (Application) |
||
(A) | (I) | High temperature thermometer | |
(B) | (II) | Water repellent sprays | |
(C) | (III) | Photoelectric cells | |
(D) | (V) | Bullet proof vest |
Choose the most appropriate answer from the options given below


