Q. Which of the following chronological events in the development of modern chemistry are correctly matched?- 1661 – Robert Boyle publishes The Sceptical Chymist, distinguishing chemistry from alchemy.
- 1662 – Boyle's law proposed, describing pressure–volume relationship in gases.
- 1735 – Georg Brandt identifies cobalt as a new element.
Select the correct option from the codes given below:
Answer:
1, 2 & 3
Notes: All three events are historically correct. In 1661, Robert Boyle published The Sceptical Chymist, distinguishing chemistry from alchemy. In 1662, Boyle's law was proposed, relating pressure and volume in gases. In 1735, Georg Brandt identified cobalt as a new element, the first metallic element discovered since antiquity.