EASY
Earn 100

When SO2 is passed through an aqueous solution of I2 , it becomes colourless. This is due to

50% studentsanswered this correctly

Important Questions on The p-Block Elements

EASY
Which catalyst is used for oxidation of SO2 to SO3 in lead chamber process for the manufacture of sulphuric acid?
MEDIUM
Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other?
MEDIUM
The correct sequence of decreasing number of π -bonds in the structure of H2SO3, H2SO4 and H2S2O7 is:
MEDIUM
The oxoacid of sulphur that does not contain bond between sulphur atom is:
EASY
In preparation of sulphuric acid from Sulphur dioxide in lead chamber process. What substance is used as a catalyst?
EASY
On treating a compound with warm dil. H2SO4, gas X is evolved which turns K2Cr2O7 paper acidified with dil. H2SO4 to a green compound YX and Y respectively are :
MEDIUM
The number of S=O and S-OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are:
MEDIUM
In which pair of ions do both the species contain S-S bond?
MEDIUM
When SO2 gas is passed through aqueous Na2CO3, the product(s) formed is(are):
EASY
The element that combines with oxygen to give an amphoteric oxide is-
EASY
Which of the following oxoacid of sulphur has OO linkage?
EASY

Match List-I with List-II :

  List-I   List-II
  Industrial process   Application
(a) Haber's process (i) HNO3 synthesis
(b) Ostwald's process (ii) Aluminium extraction
(c) Contact process (iii) NH3 synthesis
(d) Hall-Heroult process (iv) H2SO4 synthesis

 Choose the correct answer from the options given below:

EASY
Hot concentrated sulphuric acid on reaction with which one of the following elements, produces two gaseous products?