NTA Abhyas JEE Main2020Chemistrys Block ElementsPractice
Which of the following reaction is taking place resulting in discolouration of marble of the buildings like Taj Mahal?
Options
- AC a C O 3 + H 2 S O 4 → C a S O 4 + H 2 O + C O 2
- BC a C O 3 + 2 H C l → C a C l 2 + H 2 O + C O 2
- CC a C O 3 + H 2 O → C a O H 2 + C O 2
- DC a C O 3 → C a O + C O 2
Correct answer
A. C a C O 3 + H 2 S O 4 → C a S O 4 + H 2 O + C O 2
Step-by-step solution
High level of sulphur and nitrogen oxides cause acid rain which reacts with marble to decolourise it.