Multiple choice

The beauty of Taj Mahal is endangered due to

  1. degradation of marble due to high temperature

  2. discharge of industrial wastes into the Yamuna river

  3. air pollutants released from oil refinery

  4. riparian erosion

  5. -

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The brownish discoloration of marble of Taj Mahal is caused by particles of carbon and dust released by oil refinery.