What is the chemical formula of gypsum?
- A$CaCO_3$
- B$CaSO_4 \cdot 2H_2O$
- C$CaO$
- D$Ca(OH)_2$
Explore More
Similar Questions
Give reasons for the following:
$(a)$ Dry $HCl$ gas does not change the colour of dry litmus paper.
$(a)$ Dry $HCl$ gas does not change the colour of dry litmus paper.
Medium
View SolutionDry hydrogen chloride gas does not turn blue litmus red whereas hydrochloric acid does. Give one reason.
Easy
View SolutionTooth enamel is the hardest substance in our body. Name the compound of which it is made up. At what $pH$ of the mouth does it get corroded? State the role of bacteria present in the mouth. Suggest a method to prevent tooth decay.
Medium
View SolutionWhat is the nature of an aqueous solution of washing soda?
Easy
View SolutionWhat is formed when an acid reacts with a base?
Easy
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