Which of the following compound is called dead burnt plaster?

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.

An Intiative by Sri Chaitanya

${CaSO}_{4} \cdot 2 H_{2} O$

${CaSO}_{4} \cdot \frac{1}{2} H_{2} O$

${CaSO}_{4}$ (anhy)

None of these

answer is C.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Explanation

The compound known as dead burnt plaster is anhydrous calcium sulfate, with the chemical formula CaSO₄.

This form is produced by heating plaster of Paris (calcium sulfate hemihydrate, CaSO₄·½H₂O) at temperatures above 393 K (120°C), causing it to lose its water of crystallization and become anhydrous.

Among the options provided:

a) CaSO₄·½H₂O: This is the formula for plaster of Paris, not dead burnt plaster.
b) CaSO₄·2H₂O: This represents gypsum, the dihydrate form of calcium sulfate.
c) CaSO₄ (anhydrous): This is the correct formula for dead burnt plaster.

Therefore, the correct answer is (c) CaSO₄ (anhydrous).

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE