Write true or false for the following statement: On heating the crystals of ferrous sulphate,the colour changes from green to grey.
(A) $(TRUE)$ The statement is $True$. Ferrous sulphate crystals $(FeSO_4 \cdot 7H_2O)$ are light green in colour. Upon heating,they first lose water of crystallisation to become anhydrous ferrous sulphate $(FeSO_4)$,which is white or greyish-white. Further heating leads to the decomposition of ferrous sulphate into ferric oxide $(Fe_2O_3)$,sulphur dioxide $(SO_2)$,and sulphur trioxide $(SO_3)$.
Explore More
Similar Questions
Which of the following are combination reactions?
$(i) 2 KClO_3 \xrightarrow{\text{Heat}} 2 KCl + 3 O_2$
$(ii) MgO + H_2O \longrightarrow Mg(OH)_2$
$(iii) 4 Al + 3 O_2 \longrightarrow 2 Al_2O_3$
$(iv) Zn + FeSO_4 \longrightarrow ZnSO_4 + Fe$
$(i) 2 KClO_3 \xrightarrow{\text{Heat}} 2 KCl + 3 O_2$
$(ii) MgO + H_2O \longrightarrow Mg(OH)_2$
$(iii) 4 Al + 3 O_2 \longrightarrow 2 Al_2O_3$
$(iv) Zn + FeSO_4 \longrightarrow ZnSO_4 + Fe$
Medium
View SolutionState what happens when:
$(a)$ Chlorine gas is passed through dry slaked lime.
Also write the chemical equation in each case.
$(a)$ Chlorine gas is passed through dry slaked lime.
Also write the chemical equation in each case.
Medium
View SolutionWhen hydrogen gas burns in the presence of oxygen,water is formed,and when water is electrolysed,hydrogen and oxygen gases are produced. State the kind of reaction that takes place:
$(a)$ In the first case
$(b)$ In the second case
$(a)$ In the first case
$(b)$ In the second case
Easy
View SolutionName the oxidising and reducing agent in the following reaction:
$CuO + H_{2} \longrightarrow Cu + H_{2}O$
$CuO + H_{2} \longrightarrow Cu + H_{2}O$
Easy
View SolutionWrite two observations for the following chemical reaction:
$(a)$ Potassium iodide solution is added to lead nitrate solution.
$(a)$ Potassium iodide solution is added to lead nitrate solution.
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo