Home
Class 12
CHEMISTRY
Passage - II : The solid(A) is a labor...

Passage - II :
The solid(A) is a laboratory reagent. Give the following reactions.
i) On strongly heating it gives two oxides of sulphur
ii) On adding aqueous NaOH solution to its aqueous solution a dirty green precipitate is obtained, which starts turning brown on exposure to air.
The solid A is

A

`BaCl_(2)`

B

`FeSO_(4)`

C

`CaSO_(4)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`FeSO_(4).7H_(2)O underset(-7H_(2)O) overset(300^(@)C)to 2FeSO_(4) overset("high T")to Fe_(2)O_(3)+SO_(2)+SO_(3)`.
`Fe_(2)(SO_(4))_(3)3NaOH to underset("Dirty green ppt") (2Fe(OH)_(3)+Na_(2)SO_(4))` Oxides are `SO_(2),SO_(3)`.
Promotional Banner

Topper's Solved these Questions

  • VIA GROUP ELEMENTS

    AAKASH SERIES|Exercise PRACTICE SHEET - 2 (Match the following questions)|2 Videos

  • VIA GROUP ELEMENTS

    AAKASH SERIES|Exercise PRACTICE SHEET - 2 (Integer answer type Questions)|6 Videos

  • VIA GROUP ELEMENTS

    AAKASH SERIES|Exercise PRACTICE SHEET - 2 (Single or more than one option questions)|16 Videos

  • VA GROUP ELEMENTS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|51 Videos

  • VII GROUP ELEMENTS

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE -4|55 Videos

Similar Questions

Explore conceptually related problems

Passage - II : The solid(A) is a laboratory reagent. Give the following reactions. i) On strongly heating it gives two oxides of sulphur ii) On adding aqueous NaOH solution to its aqueous solution a dirty green precipitate is obtained, which starts turning brown on exposure to air. The two oxides of sulphur are

Passage - II : The solid(A) is a laboratory reagent. Give the following reactions. i) On strongly heating it gives two oxides of sulphur ii) On adding aqueous NaOH solution to its aqueous solution a dirty green precipitate is obtained, which starts turning brown on exposure to air. What is compound in dirty green ppt.

Passage - VII : An aqueous solution of a gas (x) gives the following reactions (1) It decolourises an acidified K_(2)Cr_(2)O_(7) solution (2) On boiling with H_(2)O_(2) cooling it and then adding on aqueous solution of BaCl_(2) , a precipitation insoluble in dilute HCl is obtained (3) On passing H_(2)S in the solution white turbidity (y) is obtained (4) When gas 'x' is heated with concentrated HNO_(3) evolves a brown coloured gas (A) (5) When 'x' also dissolves in Na_(2)SO_(3) solution on heating a clear solution (C ) is formed. The brown coloured gas is

Passage - VII : An aqueous solution of a gas (x) gives the following reactions (1) It decolourises an acidified K_(2)Cr_(2)O_(7) solution (2) On boiling with H_(2)O_(2) cooling it and then adding on aqueous solution of BaCl_(2) , a precipitation insoluble in dilute HCl is obtained (3) On passing H_(2)S in the solution white turbidity (y) is obtained (4) When gas 'x' is heated with concentrated HNO_(3) evolves a brown coloured gas (A) (5) When 'x' also dissolves in Na_(2)SO_(3) solution on heating a clear solution (C ) is formed. Gas 'x' is

Passage - VII : An aqueous solution of a gas (x) gives the following reactions (1) It decolourises an acidified K_(2)Cr_(2)O_(7) solution (2) On boiling with H_(2)O_(2) cooling it and then adding on aqueous solution of BaCl_(2) , a precipitation insoluble in dilute HCl is obtained (3) On passing H_(2)S in the solution white turbidity (y) is obtained (4) When gas 'x' is heated with concentrated HNO_(3) evolves a brown coloured gas (A) (5) When 'x' also dissolves in Na_(2)SO_(3) solution on heating a clear solution (C ) is formed. "C" is

Passage - VII : An aqueous solution of a gas (x) gives the following reactions (1) It decolourises an acidified K_(2)Cr_(2)O_(7) solution (2) On boiling with H_(2)O_(2) cooling it and then adding on aqueous solution of BaCl_(2) , a precipitation insoluble in dilute HCl is obtained (3) On passing H_(2)S in the solution white turbidity (y) is obtained (4) When gas 'x' is heated with concentrated HNO_(3) evolves a brown coloured gas (A) (5) When 'x' also dissolves in Na_(2)SO_(3) solution on heating a clear solution (C ) is formed. y is

An aqueous solution of a substance gives a white precipitate on treatment with dilute hydrochloric acid, which dissolves on heating. When hydrogen sulphide is passed through the hot acidic solution, a black precipitate is obtained. The substance is a :