Question

Marble statues are corroded or stained when they repeatedly come into contact with polluted rain water . Identify the main reason.​

Answer 1

Answer:

A solid and thick seal can lessen the likelihood that moisture can creep into the stone's surface and allow rust to develop. However, most rust stains in marble are caused by iron deposits which are naturally occurring in the stone. These cannot be easily removed by a poultice or other methods, unfortunately.

Explanation:

Answer 2

Answer:

दिए गए पोटेशियम परमैंगनेट गोल की मोलरता एवं बटा 10 ऑक्सिजनिक अमूल से अंकित करना ज्ञात करें